Convert Kelvin to Celsius
Kelvin (K) to Celsius (°C) — the formula, a worked example and a live converter, all in your browser.
Kelvin to Celsius formula
Temperature scales don't share a zero point, so the conversion uses an offset formula rather than a simple ratio:
°C = K − 273.15
Worked example
20 K = 20 = -253.15 °C.
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 | -273.15 |
| 100 | -173.15 |
| 273.15 | 0 |
| 300 | 26.85 |
| 373.15 | 100 |
Common uses
Handy for turning scientific Kelvin values back into the Celsius temperatures we use day to day.
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Frequently asked questions
What is the formula to convert kelvin to celsius?
Use °C = K − 273.15.
What is 20K in celsius?
20K equals -253.15°C.
Is this converter accurate?
Yes. It uses the exact internationally-defined conversion factors and runs entirely in your browser, so results match standards tables and nothing you type is uploaded.