About the Temperature
Convert a temperature between Celsius, Fahrenheit and Kelvin. Enter a value, pick its unit, and see the other two scales update instantly.
It's handy for cooking, weather, science homework and travel. The conversion runs entirely in your browser, so it's fast and works offline.
Features
- Convert between Celsius, Fahrenheit and Kelvin
- Instant results as you type
- Accurate to two decimal places
- Works with negative temperatures
- Runs entirely in your browser, even offline
- Free with no sign-up
How to convert temperatures
- Type a temperature in the value field.
- Select its unit: Celsius, Fahrenheit or Kelvin.
- Read the converted values in the other two scales.
- Change the value or unit any time.
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. The tool does this automatically as you type.
What is Kelvin?
Kelvin is the SI temperature scale starting at absolute zero; 0 °C equals 273.15 K.
Does it handle negative values?
Yes. You can enter negative Celsius or Fahrenheit values and convert them correctly.
Is it free?
Yes, completely free and it runs entirely in your browser.