Whether you are science class data and weather on the Kelvin scale, converting Kelvin to Celsius by hand is easy to get wrong. This free converter gives you an instant, exact answer — 1 K = -272.15 °C — and runs entirely in your browser.
How to convert Kelvin to Celsius
To convert a value from K to °C, subtract 273.15. For example: -253.15 °C equals 20 K converted with the formula, and -173.15 °C equals 100 K. Because the two scales do not share a zero point, a single multiplication factor is not enough — the offset must be applied too.
Going the other way, use the Celsius to Kelvin converter.
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 | -273.15 |
| 100 | -173.15 |
| 200 | -73.15 |
| 273.15 | 0 |
| 373.15 | 100 |
| 500 | 226.85 |
Other temperature conversions
Why use the HandyTools converter
Most unit converters upload your values to a server or bury you in ads. HandyTools performs the K-to-°C conversion locally on your device with instant bidirectional results — type in either box and both update at once. There is nothing to install, nothing to sign up for, and your numbers never leave your browser.