Temperature Converter
Convert temperature between Celsius (°C), Fahrenheit (°F), and Kelvin (K) instantly. Type in one unit and all others update live.
Type in any unit — the others update instantly. Kelvin cannot go below 0 K.
How to use Temperature Converter
- Type a value into any of the three fields: Celsius, Fahrenheit, or Kelvin.
- The other two units update instantly as you type.
- Clear a field to reset the conversion.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32. For example, 100°C = (100 × 9/5) + 32 = 212°F.
How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value and multiply by 5/9. For example, 68°F = (68 − 32) × 5/9 = 20°C.
What is the difference between Celsius and Kelvin?
Kelvin starts at absolute zero (−273.15°C) and uses the same step size as Celsius. To convert: K = °C + 273.15.
What is 100°C in Fahrenheit?
100°C equals 212°F, the boiling point of water at sea level.
Is this temperature converter free?
Yes, it is free, private, and runs entirely in your browser with no server calls and no registration.