Temperature Converter

Enter a temperature and a source scale.

Inputs
Results
Celsius
100 °C
Fahrenheit
212 °F
Kelvin
373.15 K
Formula
°F = °C × 9/5 + 32. K = °C + 273.15.
Example

100 °C = 212 °F = 373.15 K.

How the Temperature Converter works

The Temperature Converter converts values between the standard units used for temperature converter. Enter a value in any supported unit and every other unit updates instantly, so you can copy the one you need without doing another conversion.

Conversion factors are the exact ratios defined by the international system of units (SI) — no rounding shortcuts, no lossy intermediate steps.

  • Exact SI-defined conversion factors
  • Live two-way conversion — change any field, everything updates
  • Handles very large and very small values
  • Copy-friendly output for spreadsheets and reports

Choosing the right unit

Match the unit to your audience: SI for scientific work, imperial for US domestic contexts. When in doubt, present both — the Temperature Converter makes that trivial.

Extremely small or large values are easier to read in scientific notation. The Temperature Converter switches to scientific format automatically when a plain decimal would be hard to read.

Frequently asked questions