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Everyday calculations

Tools for money, time and daily decisions.

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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

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202 calculators · 8 categories

Maths36 calculatorsDates & age12 calculatorsUnit converters28 calculatorsGeometry28 calculatorsStatistics18 calculatorsEveryday money30 calculatorsPhysics28 calculatorsHome & construction22 calculators
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Percentage CalculatorPercentage Change CalculatorDiscount CalculatorAverage CalculatorProportion CalculatorFraction SimplifierDays Between Dates CalculatorAge CalculatorLength ConverterWeight ConverterArea ConverterVolume ConverterSpeed ConverterTime Unit ConverterPower ConverterTemperature ConverterPercentage of Total CalculatorReverse Percentage CalculatorPercentage Point CalculatorRatio SimplifierInverse Proportion CalculatorGreatest Common Divisor CalculatorLeast Common Multiple CalculatorFactorial CalculatorCombination CalculatorPermutation CalculatorPower CalculatorSquare Root CalculatorCube Root CalculatorNth Root CalculatorLogarithm CalculatorScientific Notation CalculatorRounding CalculatorRemainder CalculatorQuadratic Equation CalculatorLinear Equation CalculatorArithmetic Sequence CalculatorGeometric Sequence CalculatorSlope CalculatorMidpoint CalculatorDistance Between Points CalculatorPythagorean Theorem CalculatorDegrees to Radians CalculatorTrigonometry CalculatorDecimal to Binary CalculatorDecimal to Hexadecimal CalculatorSquare CalculatorRectangle CalculatorCircle CalculatorTriangle Area CalculatorHeron Formula CalculatorEquilateral Triangle CalculatorIsosceles Triangle CalculatorTrapezoid Area CalculatorParallelogram Area CalculatorRhombus CalculatorEllipse Area CalculatorRegular Polygon CalculatorPolygon Interior Angles CalculatorCircular Sector CalculatorAnnulus CalculatorCircle Chord CalculatorCube CalculatorRectangular Prism CalculatorCylinder CalculatorCone CalculatorSphere CalculatorHemisphere CalculatorPyramid Volume CalculatorCone Frustum CalculatorEllipsoid Volume CalculatorTorus CalculatorTriangular Prism Volume CalculatorScale Drawing CalculatorMedian CalculatorMode CalculatorRange CalculatorPopulation Variance CalculatorSample Standard Deviation CalculatorPopulation Standard Deviation CalculatorQuartile CalculatorPercentile CalculatorWeighted Average CalculatorGeometric Mean CalculatorHarmonic Mean CalculatorRMS CalculatorZ-Score CalculatorStandard Error CalculatorCoefficient of Variation CalculatorPearson Correlation CalculatorBinomial Probability CalculatorPoisson Probability CalculatorSimple Interest CalculatorCompound Interest CalculatorEffective Annual Rate CalculatorEquivalent Monthly Rate CalculatorPresent Value CalculatorAnnuity Present Value CalculatorAnnuity Future Value CalculatorSavings Goal CalculatorLoan Payment CalculatorLoan Balance CalculatorInterest-Only Payment CalculatorInvestment Return CalculatorAnnualized Return CalculatorReal Return CalculatorPurchasing Power CalculatorDoubling Time CalculatorProfit Margin CalculatorMarkup CalculatorBreak-Even CalculatorUnit Price CalculatorSuccessive Discount CalculatorStraight-Line Depreciation CalculatorPayback Period CalculatorDividend Yield CalculatorPrice-to-Earnings CalculatorNet Worth CalculatorEmergency Fund CalculatorHourly Pay CalculatorOvertime Pay CalculatorExchange Rate CalculatorAverage Speed CalculatorAcceleration CalculatorConstant Acceleration Distance CalculatorFree Fall CalculatorProjectile Range CalculatorForce CalculatorKinetic Energy CalculatorPotential Energy CalculatorMomentum CalculatorImpulse CalculatorMechanical Work CalculatorMechanical Power CalculatorDensity CalculatorPressure from Force CalculatorHydrostatic Pressure CalculatorBuoyancy CalculatorTorque CalculatorCentripetal Force CalculatorSpring Force CalculatorPendulum Period CalculatorWavelength CalculatorFrequency and Period CalculatorOhm’s Law CalculatorDC Electrical Power CalculatorSeries Resistance CalculatorParallel Resistance CalculatorCapacitor Energy CalculatorSensible Heat CalculatorPaint CalculatorFlooring CalculatorTile Quantity CalculatorConcrete Slab CalculatorGravel CalculatorTopsoil CalculatorMulch CalculatorWallpaper Strip CalculatorFence Post CalculatorRoof Pitch CalculatorStair Riser CalculatorRectangular Pool Volume CalculatorTank Fill Time CalculatorElectricity Cost CalculatorWater Usage Cost CalculatorFuel Cost CalculatorFuel Economy CalculatorEV Charging Time CalculatorBattery Runtime CalculatorRecipe Scaling CalculatorAspect Ratio Resize CalculatorPixel Density CalculatorAdd Days to Date CalculatorDay of Week CalculatorDay of Year CalculatorISO Week Number CalculatorLeap Year CalculatorDays in Month CalculatorWeekdays Between Dates CalculatorAdd Weekdays CalculatorDecimal Hours CalculatorWork Hours CalculatorEnergy ConverterPressure ConverterForce ConverterAngle ConverterData Storage ConverterData Transfer Rate ConverterFrequency ConverterAcceleration ConverterTorque ConverterDensity ConverterVolume Flow ConverterMass Flow ConverterElectric Charge ConverterVoltage ConverterResistance ConverterCapacitance ConverterInductance ConverterIlluminance ConverterThermal Conductivity ConverterSurface Density Converter