What the result means
Temperature scales have different zero points as well as different interval sizes, so conversion requires an offset and a multiplier. This differs from simple unit conversions that use only one factor.
Conversions
Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin.
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How this calculation works
Convert temperatures between Celsius, Fahrenheit and Kelvin. Enter your values, select Calculate, then review the result. You can change any value and calculate again.
Formula used
°F = °C × 9/5 + 32 · K = °C + 273.15
Good to know
Results are estimates for informational purposes.
Example calculation
20°C × 9/5 + 32 = 68°F
A practical accuracy check
Use fixed points: 0°C = 32°F = 273.15 K and 100°C = 212°F = 373.15 K. Kelvin must never be below 0 K.
Assumptions and limits
Do not apply the Celsius-to-Fahrenheit formula to temperature differences: an interval of 1 °C equals 1.8 °F, without adding 32. Kelvin values below absolute zero are not physically valid.
Using the result responsibly
Keep the original scale beside readings in weather, cooking, laboratory or equipment records. Round only to the precision supported by the source instrument, then convert back when a safety threshold matters.
A relevant comparison to try
Keep the original reading and instrument precision beside a converted safety threshold. Convert a temperature, not an interval: differences do not use the +32 offset.
How to use this calculator
- Enter your values, select Calculate, then review the result. You can change any value and calculate again.
- Check units and time periods before comparing two results.
- Change one input at a time to understand its effect.
Frequently asked questions
What does the Temperature Converter calculate?
Convert temperatures between Celsius, Fahrenheit and Kelvin. The result is calculated from the values you enter and the formula shown on this page.
Which assumptions does the Temperature Converter use?
It applies °F = °C × 9/5 + 32 · K = °C + 273.15. Values, fees, rules or timing not represented by an input are not added automatically.