🌡️ Celsius to Fahrenheit Converter
Weather, cooking or science – get °F from °C instantly, with Kelvin one click away.
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How to use the Celsius to Fahrenheit Converter tool
- Enter a temperature in °C.
- Read the Fahrenheit value.
- Swap to convert °F → °C or pick Kelvin.
Frequently asked questions
What is the formula for Celsius to Fahrenheit?
°F = °C × 9/5 + 32. So 100 °C = 212 °F and 37 °C = 98.6 °F.
Is there a quick approximation?
Double the Celsius and add 30. 20 °C → 70 °F (exact 68 °F). It works best for everyday weather temperatures.
When are Celsius and Fahrenheit equal?
At −40°. −40 °C is exactly −40 °F.