Whether you are science experiments and engineering calculations, converting Celsius to Kelvin by hand is easy to get wrong. This free converter gives you an instant, exact answer — 1 °C = 274.15 K — and runs entirely in your browser.
How to convert Celsius to Kelvin
To convert a value from °C to K, add 273.15. For example: 293.15 K equals 20 °C converted with the formula, and 373.15 K equals 100 °C. 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 Kelvin to Celsius converter.
Celsius to Kelvin conversion table
| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| 0 | 273.15 |
| 20 | 293.15 |
| 37 | 310.15 |
| 100 | 373.15 |
| 200 | 473.15 |
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 °C-to-K 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.