Mortgage Calculator
Estimate your monthly US housing payment, including principal, interest, property tax, insurance, PMI and HOA dues.
Housing & loans
CALCULATOR LIBRARY
All calculators
Find your tool. Formula, example and result on the same page.
208 calculators
Auto Loan Calculator
Calculate a US auto loan payment using the amount financed, annual interest rate and repayment term.
Housing & loans
Sales Tax Calculator
Add or remove sales tax using your combined local rate. See the pretax amount, tax and final purchase total.
Everyday money
Tip & Bill Split Calculator
Calculate a tip, sales tax and an equal split for a US restaurant bill. Choose whether to tip before or after tax.
Everyday money
Hourly to Salary Calculator
Convert an hourly wage into weekly, monthly and annual gross pay using your paid hours and paid weeks.
Pay & work
Debt-to-Income Ratio Calculator
Calculate monthly debt-to-income ratio from gross income, housing costs and recurring debt payments.
Housing & loans
Percentage Calculator
Find a percentage of a number, or add or subtract a percentage. See the formula and a worked example.
Maths
Percentage Change Calculator
Calculate the percentage increase or decrease between an original value and a new value, with the absolute difference.
Maths
Discount Calculator
Calculate a discounted price and how much you save. Enter any price and a discount from 0% to 100%.
Maths
Average Calculator
Find the arithmetic mean, sum and count of a list of numbers. Enter values separated by spaces or semicolons.
Maths
Proportion Calculator
Solve a direct proportion a : b = c : x. Enter three values to find the missing fourth value.
Maths
Fraction Simplifier
Reduce a fraction to its simplest form and see its decimal value. Enter an integer numerator and a positive denominator.
Maths
Days Between Dates Calculator
Count calendar days and weeks between two dates, excluding the starting day. Leap years are included automatically.
Dates & age
Age Calculator
Calculate completed years and total days between a birth date and a reference date, including leap years.
Dates & age
Length Converter
Convert metres, kilometres, centimetres, inches, feet, yards and miles using fixed conversion factors.
Unit converters
Weight Converter
Convert kilograms, grams, milligrams, tonnes, pounds and ounces. See the factors behind each mass conversion.
Unit converters
Area Converter
Convert square metres, square centimetres, square kilometres, hectares, square feet and acres.
Unit converters
Volume Converter
Convert litres, millilitres, cubic metres, US liquid gallons and US fluid ounces with explicit unit definitions.
Unit converters
Speed Converter
Convert kilometres per hour, metres per second, miles per hour and knots. Compare speeds in familiar units.
Unit converters
Time Unit Converter
Convert seconds, minutes, hours, fixed 24-hour days and seven-day weeks. Decimal time values are supported.
Unit converters
Power Converter
Convert watts, kilowatts, megawatts and mechanical horsepower. Power units are separate from energy units.
Unit converters
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin. The calculator checks absolute zero and shows the temperature conversion formula.
Unit converters
Percentage of Total Calculator
Find the share of a positive total. The part and total must use the same measurement or currency.
Maths
Reverse Percentage Calculator
Recover a value before a percentage increase. Enter a negative rate to reverse a reduction smaller than 100%.
Maths
Percentage Point Calculator
Compare two rates in percentage points. Moving from 20% to 25% is 5 points, not a 5% relative increase.
Maths
Ratio Simplifier
Reduce two positive whole quantities to an equivalent integer ratio using their greatest common divisor.
Maths
Inverse Proportion Calculator
Estimate time when equally productive workers share a fixed task. Doubling workers halves time under this ideal assumption.
Maths
Greatest Common Divisor Calculator
Find the greatest positive integer dividing both inputs. The second integer must be positive; the first may be zero.
Maths
Least Common Multiple Calculator
Find the smallest positive multiple shared by two positive integers. Useful for synchronizing repeating intervals.
Maths
Factorial Calculator
Multiply consecutive positive integers up to n. Large outputs are floating-point approximations; 0! is defined as 1.
Maths
Combination Calculator
Count selections without replacement when order does not matter. The selected count cannot exceed available items.
Maths
Permutation Calculator
Count ordered selections without replacement. Selecting A then B differs from selecting B then A.
Maths
Power Calculator
Raise a base to a real exponent. Negative bases require exponents yielding real values; undefined or infinite results are rejected.
Maths
Square Root Calculator
Find the nonnegative number whose square equals the input. Negative inputs have no real square root.
Maths
Cube Root Calculator
Find the real cube root of a positive or negative number. For example, the cube root of −8 is −2.
Maths
Nth Root Calculator
Find a real root of integer degree. A negative radicand requires an odd degree; the principal nonnegative root is used otherwise.
Maths
Logarithm Calculator
Calculate a logarithm in any positive base except one. Both the number and base must be positive.
Maths
Scientific Notation Calculator
Express a number as a mantissa and a power of ten. Zero is displayed separately because it has no unique normalized exponent.
Maths
Rounding Calculator
Round to up to eight decimal places using JavaScript Math.round, which resolves exact halfway values toward positive infinity.
Maths
Remainder Calculator
Divide nonnegative integers and show the integer quotient and remainder. The divisor must be positive.
Maths
Quadratic Equation Calculator
Solve a quadratic equation with real coefficients and real roots. The leading coefficient must be nonzero and the discriminant nonnegative.
Maths
Linear Equation Calculator
Solve a single linear equation. A zero coefficient does not determine one unique solution and is rejected.
Maths
Arithmetic Sequence Calculator
Find the nth term and sum of an arithmetic sequence, where each term changes by the same fixed amount.
Maths
Geometric Sequence Calculator
Find the nth term and finite sum when every term is multiplied by a constant ratio. Ratio one uses n times the first term.
Maths
Slope Calculator
Find the slope between two points. Vertical lines have undefined slope and cannot be represented by this numeric result.
Maths
Midpoint Calculator
Find the point halfway along a straight segment in a two-dimensional Cartesian coordinate system.
Maths
Distance Between Points Calculator
Calculate straight-line Euclidean distance in a plane. Coordinates must use the same scale; this is not road or geographic distance.
Maths
Pythagorean Theorem Calculator
Find the hypotenuse of a right triangle from its perpendicular legs. Both legs must use the same length unit.
Maths
Degrees to Radians Calculator
Convert angular degrees to radians without wrapping the angle. A full turn is 360 degrees or 2π radians.
Maths
Trigonometry Calculator
Calculate sine, cosine and tangent of an angle in degrees. Tangent is undefined at odd multiples of 90 degrees.
Maths
Decimal to Binary Calculator
Convert a nonnegative safe integer into its binary representation. Fractional values and integers above JavaScript safe precision are excluded.
Maths
Decimal to Hexadecimal Calculator
Convert a nonnegative integer to hexadecimal digits 0–9 and A–F. This does not interpret signed machine-word formats.
Maths
Square Calculator
Find area, perimeter and diagonal of a square. Enter the side in one consistent unit; area uses its square.
Geometry
Rectangle Calculator
Find the area, perimeter and diagonal of a rectangle using perpendicular length and width in the same unit.
Geometry
Circle Calculator
Calculate circle area, circumference and diameter from the radius. Do not enter the diameter in the radius field.
Geometry
Triangle Area Calculator
Use a triangle base and its perpendicular height. A sloping side is not generally the height.
Geometry
Heron Formula Calculator
Find triangle area from three sides. Each pair of sides must sum to more than the remaining side.
Geometry
Equilateral Triangle Calculator
Find area, height and perimeter when all three sides have equal length and every angle is 60 degrees.
Geometry
Isosceles Triangle Calculator
Find the height and area from an equal side and base. The base must be shorter than twice the equal side.
Geometry
Trapezoid Area Calculator
Calculate area from two parallel bases and the perpendicular distance between them. Sloping side lengths are unnecessary.
Geometry
Parallelogram Area Calculator
Multiply the base by the perpendicular height. The slanted side can differ from the height.
Geometry
Rhombus Calculator
Calculate area and perimeter from the perpendicular diagonals of a rhombus, whose four sides have equal length.
Geometry
Ellipse Area Calculator
Find ellipse area using its two semiaxes. Each semiaxis is half of the full width in that direction.
Geometry
Regular Polygon Calculator
Find area and perimeter of a convex regular polygon. All sides and all interior angles must be equal.
Geometry
Polygon Interior Angles Calculator
Find the interior-angle sum of a simple polygon and each angle if it is regular. Self-intersecting polygons are excluded.
Geometry
Circular Sector Calculator
Find the area of a circular sector and its arc length. The central angle is entered in degrees from 0 to 360.
Geometry
Annulus Calculator
Find the area between two concentric circles. The inner radius cannot exceed the outer radius.
Geometry
Circle Chord Calculator
Calculate the straight chord joining two points on a circle. The smaller central angle ranges from 0 to 180 degrees.
Geometry
Cube Calculator
Find volume, total surface area and space diagonal of a cube from its edge length.
Geometry
Rectangular Prism Calculator
Calculate volume and surface area of a rectangular box from three perpendicular dimensions in the same unit.
Geometry
Cylinder Calculator
Calculate the volume and closed surface area of a right circular cylinder, including both circular ends.
Geometry
Cone Calculator
Find volume and total surface area of a right circular cone. Use vertical height, not slant height.
Geometry
Sphere Calculator
Calculate volume and surface area of a sphere from its radius. Area and volume have squared and cubed units respectively.
Geometry
Hemisphere Calculator
Find volume and closed surface area of half a sphere. The surface includes the flat circular base.
Geometry
Pyramid Volume Calculator
Find pyramid volume from base area and perpendicular height. The same relation applies to any planar polygonal base.
Geometry
Cone Frustum Calculator
Find the volume of a cone cut parallel to its base. The smaller radius cannot exceed the larger radius.
Geometry
Ellipsoid Volume Calculator
Calculate ellipsoid volume using three semiaxes. Enter half-dimensions, not full diameters.
Geometry
Torus Calculator
Find volume and surface area of a ring torus. The major radius measures from the centre of the hole to the centre of the tube.
Geometry
Triangular Prism Volume Calculator
Multiply triangular cross-section area by prism length. Triangle height must be perpendicular to its base.
Geometry
Scale Drawing Calculator
Convert a drawing length to actual length at scale 1:n. The output uses the same length unit as the input.
Geometry
Median Calculator
Sort observations and find the middle value. With an even count, the median is the mean of the two central values.
Statistics
Mode Calculator
Find every value tied for highest frequency. If all values occur once, the result lists that tie rather than implying one unique mode.
Statistics
Range Calculator
Measure the spread between the largest and smallest observation. The range is sensitive to outliers.
Statistics
Population Variance Calculator
Calculate variance when the list is the entire population of interest. The squared deviations are divided by N, not N−1.
Statistics
Sample Standard Deviation Calculator
Estimate spread from at least two sample observations using the n−1 denominator. The result has the same units as the inputs.
Statistics
Population Standard Deviation Calculator
Measure the standard deviation of a complete population. Use the sample tool when estimating a larger population from a sample.
Statistics
Quartile Calculator
Find Q1, median, Q3 and interquartile range using inclusive linear interpolation. Other software may use a different quartile convention.
Statistics
Percentile Calculator
Find a percentile with inclusive linear interpolation between sorted observations. Percentiles 0 and 100 return the minimum and maximum.
Statistics
Weighted Average Calculator
Combine values using nonnegative weights. Lists must have equal length and at least one weight must be positive.
Statistics
Geometric Mean Calculator
Combine strictly positive multiplicative quantities through their geometric mean. Zero and negative values are excluded.
Statistics
Harmonic Mean Calculator
Average positive rates with equal numerators, such as speeds over equal distances. This differs from averaging speeds over equal times.
Statistics
RMS Calculator
Find the root mean square of observations by squaring, averaging and taking the square root. Negative signs disappear when squared.
Statistics
Z-Score Calculator
Express how many standard deviations an observation lies above or below a mean. Standard deviation must be positive.
Statistics
Standard Error Calculator
Estimate the standard error of a sample mean for independent observations. Correlated sampling may require a different model.
Statistics
Coefficient of Variation Calculator
Compare relative spread on a ratio scale with a positive mean. This measure is not appropriate for arbitrary-zero scales such as Celsius.
Statistics
Pearson Correlation Calculator
Measure linear association in paired observations. Both series need equal length and nonzero variance; correlation does not establish causation.
Statistics
Binomial Probability Calculator
Find the probability of exactly k successes in independent trials sharing a fixed success probability between zero and one.
Statistics
Poisson Probability Calculator
Estimate the probability of exactly k events under a Poisson model with a constant rate and independent occurrences.
Statistics
Simple Interest Calculator
Calculate interest on the original principal only. The annual rate stays fixed; fees, taxes and inflation are excluded.
Everyday money
Compound Interest Calculator
Project a balance with a fixed nominal rate and regular compounding. No contributions, withdrawals, taxes or fees are included.
Everyday money
Effective Annual Rate Calculator
Convert a nominal annual rate to an effective annual rate using the stated compounding frequency. This excludes fees.
Everyday money
Equivalent Monthly Rate Calculator
Find a compounded monthly rate equivalent to an effective annual rate. Dividing the annual percentage by twelve is not equivalent compounding.
Everyday money
Present Value Calculator
Discount one future payment to today using a fixed annual rate. The rate and horizon must use consistent annual periods.
Everyday money
Annuity Present Value Calculator
Value equal payments made at the end of each period. At zero interest, present value equals the sum of payments.
Everyday money
Annuity Future Value Calculator
Project equal contributions deposited at the end of each period. Contributions and return rate must refer to the same period.
Everyday money
Savings Goal Calculator
Find a monthly contribution needed to close a savings gap without assuming investment returns or inflation.
Everyday money
Loan Payment Calculator
Calculate equal monthly principal-and-interest payments for a fixed-rate loan. Fees and insurance are excluded.
Everyday money
Loan Balance Calculator
Estimate remaining principal just after the kth scheduled monthly payment. Assumes no extra payments, missed payments or fees.
Everyday money
Interest-Only Payment Calculator
Estimate one monthly interest-only payment. This payment does not reduce principal and does not include fees.
Everyday money
Investment Return Calculator
Measure net return relative to the total invested cost. This does not annualize the return or account for cash-flow timing.
Everyday money
Annualized Return Calculator
Find a constant annual growth rate between two positive values. Intermediate deposits and withdrawals are excluded.
Everyday money
Real Return Calculator
Adjust a nominal return for inflation over the same time period. Both rates are entered by you, not retrieved live.
Everyday money
Purchasing Power Calculator
Estimate future purchasing power of an unchanged cash amount under a constant assumed inflation rate.
Everyday money
Doubling Time Calculator
Calculate the exact time to double under constant annual compound growth. This is a projection, not a promise of return.
Everyday money
Profit Margin Calculator
Measure profit as a percentage of revenue. Include every cost relevant to the margin you intend to measure.
Everyday money
Markup Calculator
Set a selling price by adding a percentage of cost. Markup on cost differs from profit margin on revenue.
Everyday money
Break-Even Calculator
Find whole units needed to cover fixed costs. Selling price must exceed variable cost per unit.
Everyday money
Unit Price Calculator
Compare packages by cost per unit of quantity. Use the same unit, such as kilograms or pieces, for every package compared.
Everyday money
Successive Discount Calculator
Apply a second discount to an already discounted price. Discount percentages cannot simply be added.
Everyday money
Straight-Line Depreciation Calculator
Allocate depreciable cost evenly over useful life. Salvage cannot exceed cost; this is a general model, not a local tax schedule.
Everyday money
Payback Period Calculator
Estimate simple payback with constant annual cash flows. It ignores discounting and cash flows after recovery.
Everyday money
Dividend Yield Calculator
Compare an entered annual dividend with an entered share price. Dividend amounts may change and no live market data is used.
Everyday money
Price-to-Earnings Calculator
Compute a price-to-earnings ratio for positive earnings. Ensure price and earnings refer to the same share basis and currency.
Everyday money
Net Worth Calculator
Subtract outstanding liabilities from asset values measured at the same date. This does not assess liquidity or future income.
Everyday money
Emergency Fund Calculator
Calculate a reserve target using the number of months you choose and subtract existing savings. The tool does not prescribe a target.
Everyday money
Hourly Pay Calculator
Convert annual gross pay to an hourly equivalent based on paid hours. Taxes, overtime premiums and benefits are excluded.
Everyday money
Overtime Pay Calculator
Estimate gross overtime pay using a multiplier you provide. This does not determine statutory eligibility or local labor rules.
Everyday money
Exchange Rate Calculator
Convert money with an exchange rate entered manually and a percentage fee. No live rate or bank quotation is retrieved.
Everyday money
Average Speed Calculator
Divide total distance by total elapsed time, including stops. This is average speed, not instantaneous speed.
Physics
Acceleration Calculator
Calculate average acceleration along one axis. Signed velocities must refer to the same positive direction.
Physics
Constant Acceleration Distance Calculator
Calculate displacement and final velocity under constant acceleration in one dimension. Displacement may differ from total distance.
Physics
Free Fall Calculator
Estimate fall time and speed from rest with constant gravity and no air resistance. Real objects may behave differently.
Physics
Projectile Range Calculator
Estimate an ideal projectile range when launch and landing heights match. Air resistance, wind and curvature are excluded.
Physics
Force Calculator
Calculate net force from mass and acceleration in SI units under classical mechanics.
Physics
Kinetic Energy Calculator
Calculate classical translational kinetic energy. The model is intended for speeds far below the speed of light.
Physics
Potential Energy Calculator
Calculate gravitational potential energy relative to a chosen height reference, assuming constant local gravity.
Physics
Momentum Calculator
Calculate signed linear momentum along one axis. Mass is nonnegative and velocity sets the direction.
Physics
Impulse Calculator
Calculate impulse using average force over a time interval. It equals the change in momentum along the same axis.
Physics
Mechanical Work Calculator
Calculate work by a constant force along a straight displacement. Perpendicular forces do zero work in this model.
Physics
Mechanical Power Calculator
Find average power from work transferred during a positive time interval. The result is watts when inputs are joules and seconds.
Physics
Density Calculator
Calculate average density from mass divided by occupied volume. Use kilograms and cubic metres for an SI result.
Physics
Pressure from Force Calculator
Calculate uniform pressure from the force normal to a surface. The area must be expressed in square metres.
Physics
Hydrostatic Pressure Calculator
Estimate the pressure increase below a fluid surface. Atmospheric or other surface pressure must be added separately for absolute pressure.
Physics
Buoyancy Calculator
Calculate the buoyant force from displaced fluid volume. This is the upward force, not the net force on the object.
Physics
Torque Calculator
Calculate torque magnitude using the angle between position vector and force. At 90 degrees the lever arm is fully effective.
Physics
Centripetal Force Calculator
Find the inward net force required for circular motion at the entered speed and radius.
Physics
Spring Force Calculator
Apply Hooke’s law within a spring’s elastic range. The restoring force opposes displacement and stored energy is nonnegative.
Physics
Pendulum Period Calculator
Estimate the period of a simple pendulum for small angular oscillations, negligible friction and a point-like mass.
Physics
Wavelength Calculator
Find wavelength from wave speed and frequency in the same medium. Wave speed is an input rather than a universal constant.
Physics
Frequency and Period Calculator
Convert cyclic frequency to period and angular frequency. Hertz means cycles per second, not radians per second.
Physics
Ohm’s Law Calculator
Calculate current and dissipated power for an ideal ohmic resistor with positive resistance. This is a component model, not a wiring design.
Physics
DC Electrical Power Calculator
Calculate DC electrical power. AC systems may require RMS values, phase information and power factor not represented here.
Physics
Series Resistance Calculator
Add nonnegative ideal resistor values connected in series. Values must all use ohms.
Physics
Parallel Resistance Calculator
Find equivalent resistance for positive ideal resistors in parallel. Zero resistance is excluded to avoid division by zero.
Physics
Capacitor Energy Calculator
Calculate energy stored in an ideal capacitor. Capacitance is entered in microfarads and voltage in volts.
Physics
Sensible Heat Calculator
Estimate sensible heat with constant specific heat capacity and no phase change. A temperature difference in kelvin equals one in Celsius.
Physics
Paint Calculator
Estimate paint volume after deducting doors and windows from your area. Coverage depends on the product and surface condition.
Home & construction
Flooring Calculator
Estimate whole packs of flooring including a waste allowance. Irregular cuts and installation pattern can change material needs.
Home & construction
Tile Quantity Calculator
Estimate whole tiles using nominal face dimensions. Grout spacing and cuts are not modelled individually.
Home & construction
Concrete Slab Calculator
Estimate concrete volume for a rectangular slab. This calculates material volume only and does not specify structural reinforcement.
Home & construction
Gravel Calculator
Estimate loose gravel volume and mass using a supplier-provided bulk density. Compaction and moisture may change the actual quantity.
Home & construction
Topsoil Calculator
Estimate soil volume for a uniform layer. Settlement and compaction are excluded from the geometric volume.
Home & construction
Mulch Calculator
Estimate whole bags for a uniform mulch layer. Bag volume and depth are converted to the same volume unit.
Home & construction
Wallpaper Strip Calculator
Estimate rolls from full-height strips. Include trimming in height; pattern repeats and openings require your own allowance.
Home & construction
Fence Post Calculator
Count posts for one open straight run with a post at each end. Gates, corners and closed loops need separate treatment.
Home & construction
Roof Pitch Calculator
Calculate slope percentage and angle from rise and horizontal run in the same unit. Material rules and local codes are not evaluated.
Home & construction
Stair Riser Calculator
Divide a total rise into equal risers no higher than your target. Tread depth, landings and building-code compliance are not determined.
Home & construction
Rectangular Pool Volume Calculator
Estimate water volume in a rectangular pool using average water depth. Steps, curves and displaced volume are excluded.
Home & construction
Tank Fill Time Calculator
Estimate filling time at a constant flow rate with no leaks or outflow. Supply pressure changes can alter actual time.
Home & construction
Electricity Cost Calculator
Estimate energy and variable usage cost from appliance power and time. Fixed fees, tax rules and changing tariffs are excluded.
Home & construction
Water Usage Cost Calculator
Estimate consumption cost using one flat rate. Tiered tariffs, sewage charges and fixed fees are excluded.
Home & construction
Fuel Cost Calculator
Estimate fuel and cost at constant consumption. Include the full round-trip distance if you want a return journey estimate.
Home & construction
Fuel Economy Calculator
Calculate fuel economy from a measured distance and fuel quantity. Both outputs describe the same trip with inverse conventions.
Home & construction
EV Charging Time Calculator
Estimate charge time with a constant average power and efficiency. Real charging can taper; use average power rather than peak rating.
Home & construction
Battery Runtime Calculator
Estimate runtime from nominal energy and a usable-capacity allowance. Battery chemistry, temperature and current-dependent losses are not modelled.
Home & construction
Recipe Scaling Calculator
Scale one ingredient in direct proportion to servings. Cooking time and temperature do not generally scale by the same factor.
Home & construction
Aspect Ratio Resize Calculator
Resize an image to a new width while preserving its aspect ratio. Rounded pixel height may cause a tiny ratio difference.
Home & construction
Pixel Density Calculator
Estimate screen pixel density assuming square pixels and the stated active-display diagonal in inches.
Home & construction
Add Days to Date Calculator
Add or subtract calendar days, counting weekends and holidays. UTC date arithmetic prevents daylight-saving shifts.
Dates & age
Day of Week Calculator
Find the ISO weekday number for a Gregorian calendar date. Monday is 1 and Sunday is 7, independent of local timezone.
Dates & age
Day of Year Calculator
Find the ordinal day from 1 to 365 or 366. Leap days are included automatically.
Dates & age
ISO Week Number Calculator
Find the ISO week and week-year. Dates near New Year can belong to the preceding or following ISO year.
Dates & age
Leap Year Calculator
Return the number of days in a Gregorian year. Years divisible by 100 are common years unless also divisible by 400.
Dates & age
Days in Month Calculator
Find the length of a Gregorian calendar month, including February in leap years. Month numbers run from January 1 to December 12.
Dates & age
Weekdays Between Dates Calculator
Count weekdays excluding the starting date and including the ending date. National and local public holidays are not removed.
Dates & age
Add Weekdays Calculator
Add Monday-to-Friday days after a starting date. Holidays are not excluded, so this is not a jurisdiction-specific deadline calculator.
Dates & age
Decimal Hours Calculator
Convert an hours-and-minutes duration into decimal hours. Thirty minutes is 0.5 hour, not 0.30 hour.
Dates & age
Work Hours Calculator
Subtract an unpaid break from each identical shift. This totals hours only and does not apply local overtime rules.
Dates & age
Energy Converter
Convert work and heat energy. The calorie is the thermochemical calorie of exactly 4.184 joules, and kWh is energy rather than power.
Unit converters
Pressure Converter
Convert pressure units using standard atmosphere, bar and pound-force per square inch. Gauge and absolute references are not changed by unit conversion.
Unit converters
Force Converter
Convert newtons, kilonewtons, pound-force and kilogram-force. Kilogram-force uses standard gravity of 9.80665 m/s² and is not mass.
Unit converters
Angle Converter
Convert radians, degrees, gradians and full turns. One turn is 2π radians, 360 degrees or 400 gradians.
Unit converters
Data Storage Converter
Convert bits and bytes with explicit decimal and binary prefixes. MB means 1,000,000 bytes; MiB means 1,048,576 bytes.
Unit converters
Data Transfer Rate Converter
Convert decimal bit rates and byte rates. One byte contains eight bits; network overhead is not included.
Unit converters
Frequency Converter
Convert cyclic frequency between hertz, prefixed hertz and revolutions per minute. Angular frequency in radians per second is a different quantity.
Unit converters
Acceleration Converter
Convert acceleration using metres, centimetres or feet per second squared. Standard gravity g₀ is fixed at 9.80665 m/s².
Unit converters
Torque Converter
Convert torque between newton-metres and force-length units. Although dimensionally similar to energy, torque is reported as torque, not joules.
Unit converters
Density Converter
Convert mass density rather than weight density. A gram per cubic centimetre equals 1,000 kilograms per cubic metre.
Unit converters
Volume Flow Converter
Convert volume per unit time, including US gallons per minute. US liquid gallons are different from Imperial gallons.
Unit converters
Mass Flow Converter
Convert mass transported per unit time. No fluid density is assumed because this is not a conversion to volumetric flow.
Unit converters
Electric Charge Converter
Convert coulombs and ampere-hours. An ampere-hour is 3,600 coulombs; converting charge to energy also requires voltage.
Unit converters
Voltage Converter
Convert electric potential difference between volts and metric prefixes. Prefix case matters: mV is millivolts while MV is megavolts.
Unit converters
Resistance Converter
Convert electrical resistance between ohms and metric prefixes. This changes only the unit, not circuit configuration.
Unit converters
Capacitance Converter
Convert farads, microfarads, nanofarads and picofarads. Each prefix changes the scale by a power of ten.
Unit converters
Inductance Converter
Convert inductance between henries and metric prefixes. The result does not include frequency-dependent impedance.
Unit converters
Illuminance Converter
Convert illuminance in lux, kilolux and foot-candles. Illuminance measures light arriving per unit area, not lamp power.
Unit converters
Thermal Conductivity Converter
Convert thermal conductivity between SI-based units. A kelvin temperature difference has the same magnitude as a Celsius difference.
Unit converters
Surface Density Converter
Convert mass per unit area, useful for paper, sheet materials and coatings. This quantity differs from three-dimensional density.
Unit converters
No matching calculators.