Temperature Converter
Convert temperatures instantly between Celsius, Fahrenheit and Kelvin — for cooking, weather, science homework or travel. Type a value in any box and every unit updates live.
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How to use
- Type the temperature in the Celsius, Fahrenheit or Kelvin box.
- All three boxes update instantly — no button to press.
- Clear a box to start over, or paste a value copied from elsewhere.
- Read the matching values in the other two units directly.
Good to know
- 0°C = 32°F and 100°C = 212°F are the two anchor points worth remembering.
- Oven and weather conversions usually round to the nearest whole degree.
- Kelvin is mainly used in science — most daily use is Celsius vs Fahrenheit.
Note
Formulas: °F = °C x 9/5 + 32, K = °C + 273.15. Normal human body temperature is 37°C = 98.6°F, and water boils at 100°C = 212°F (at sea level).
Frequently Asked Questions (FAQ)
Which temperature units can I convert?
You can convert between Celsius, Fahrenheit, Kelvin and Rankine. The result updates live as you type.
What is the formula from Celsius to Fahrenheit?
Multiply by 9/5 and add 32. Kelvin equals Celsius plus 273.15.
Do I need to press a button to convert?
No. The result updates instantly on its own whenever you change the value or the units.
Is this temperature converter free?
Yes. It is free, needs no signup and runs entirely in your browser.