Convert between Celsius, Fahrenheit and Kelvin.
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How do you convert between Celsius, Fahrenheit and Kelvin?
Use °F = °C × 9/5 + 32, °C = (°F − 32) × 5/9, and K = °C + 273.15. These are offset conversions, not simple ratios. For example, 100 °C = 212 °F = 373.15 K, the boiling point of water at sea level. Celsius and Kelvin share the same step size, but Kelvin starts at absolute zero.
Understanding your result
Celsius and Kelvin share the same step size but Kelvin starts at absolute zero. Fahrenheit uses a different zero and a smaller degree.
Formula and method
°F = °C × 9/5 + 32; °C = (°F − 32) × 5/9; K = °C + 273.15. These are offset conversions, not simple ratios.
Worked example
100 °C = 212 °F = 373.15 K (the boiling point of water at sea level).
How to use this tool
- Enter the temperature.
- Choose the scale to convert from and to.
- Read the result and all three scales.
Common mistakes to avoid
- Forgetting the +32 offset when converting Celsius to Fahrenheit.
About the Temperature Converter
Convert a temperature between Celsius, Fahrenheit and Kelvin. Enter a value and see all three scales at once.
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Frequently asked questions
What is 100°C in Fahrenheit?
100 °C equals 212 °F, the boiling point of water.
What is normal body temperature?
About 37 °C, which is 98.6 °F.