Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin instantly — type in any field and the other two update live.

Celsius (°C): Fahrenheit (°F): Kelvin (K):

Type into any field — the other two update live. Formulas: °F = °C × 9/5 + 32, K = °C + 273.15.

How to use

Type a temperature into any one of the three fields (Celsius, Fahrenheit or Kelvin). The other two update live instantly.

Is this temperature converter free?

Yes, free with no limits and no signup.

What is the formula used?

°F = °C × 9/5 + 32 and K = °C + 273.15. You can type into any of the three fields.

Does it handle negative temperatures?

Yes, including below absolute zero for demonstration — Kelvin cannot go below 0.

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