Subtract 273.15
°C = K − 273.15
Kelvin to Celsius
Kelvin to Celsius.
Convert Kelvin to Celsius instantly. Enter a temperature to see the result, formula, and quick chart. Kelvin values must be zero or greater.
K to °C Absolute-zero check Free to use
Temperature calculator
What’s the temperature?
273.15 K is about 0 °C.
The conversion
The Kelvin-to-Celsius formula.
Both scales use the same degree size but have different zero points.
Convert 293.15 K
293.15 − 273.15 = 20°C.
Start at absolute zero
0 K equals −273.15°C. Kelvin values cannot be negative.
Quick reference
Kelvin to Celsius chart.
Common Kelvin temperatures and Celsius equivalents.
| Kelvin | Celsius |
|---|---|
| 1 | −272.15 |
| 5 | −268.15 |
| 10 | −263.15 |
| 50 | −223.15 |
| 100 | −173.15 |
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Related conversions.
Reverse the conversion or return to the temperature hub.
Kelvin to Celsius, explained
Good to know.
Quick answers about this temperature conversion.
How do I convert Kelvin to Celsius?
Subtract 273.15 from Kelvin. For example, 293.15 K is 20°C.
What is 0 K in Celsius?
Zero kelvin is −273.15 degrees Celsius, the temperature of absolute zero.
Can Kelvin temperatures be negative?
No. Kelvin is an absolute temperature scale, so valid Kelvin temperatures are zero or greater.