Temperature converter
This tool converts a temperature between Celsius, Fahrenheit and kelvin. Use it for weather reports, oven settings, fevers or science homework. It will not accept a temperature colder than absolute zero.
- Runs in your browser
- Free, no account needed
- Copy or download the result
Result
Example
100
100 C = 212 F
How to use the temperature converter
- Type a temperature, such as 100. Negative numbers are allowed.
- Choose the starting scale in From, such as Celsius (°C).
- Choose the target scale in To, such as Fahrenheit (°F).
- Press Run to get the converted reading, then Copy result or Download.
How it works
Supported scales: Celsius, Fahrenheit and kelvin.
Values below absolute zero are rejected. That limit is 0 K, -273.15 °C or -459.67 °F.
It converts temperature readings, not temperature differences. A change of 10 °C is a change of 18 °F, but this tool would convert 10 °C to 50 °F.
Results show up to 12 significant digits.
Everything runs in your browser. Your input is not uploaded or stored.
Questions and answers
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9. For example, 98.6 °F is 37 °C.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5, then add 32. For example, 100 °C is 212 °F.
At what temperature are Celsius and Fahrenheit equal?
At -40. -40 °C and -40 °F are the same temperature.
How do I convert Celsius to kelvin?
Add 273.15. Water freezes at 0 °C, which is 273.15 K.