How it works
Convert the original temperature to Celsius, then convert Celsius to the target scale. For example, 25 °C equals 77 °F or 298.15 K. Unlike length conversions, temperature scales also use offsets.
Worked example
Show example inputs and result
Temperature: 25 · From scale: C · To scale: F.
- Temperature
- 77 °F
Questions and answers
What is the lowest accepted temperature?
Absolute zero: −273.15 °C, −459.67 °F or 0 K. Temperatures below that limit are rejected. This converts temperatures, not temperature differences.
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Conversion reference: NIST SI Guide
Method reviewed: October 8, 2026 · Methods & accuracy