Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin instantly. Useful for weather, cooking and science.
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Result
All scales at once
Common temperatures reference
Recipe temps: cooking converter · more units: unit converter.
How to use
Choose absolute temperature or temperature difference, then select Celsius, Fahrenheit, Kelvin or Rankine. Absolute inputs cannot go below 0 K; ΔT mode allows negative changes.
FAQ
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example, 20°C = 68°F.
What is Kelvin?
Kelvin is the scientific temperature scale starting at absolute zero; 0°C equals 273.15 K.
Which scales are supported?
Celsius (°C), Fahrenheit (°F), Kelvin (K) and Rankine (°R), in any direction.
Can I enter a negative temperature difference?
Yes. Choose Temperature difference (ΔT). Negative differences are allowed there, while absolute temperatures are protected by the 0 K / 0 °R lower limit.
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