Convert Kelvin to Celsius

0 K is -273.15 °C. To convert kelvins to degrees Celsius, subtract 273.15: for example, 300 K is 26.85 °C. Ethical Tube's free Kelvin to Celsius converter does the math as you type, and the chart below lists common values.

FromTo

1 K = -272.15 °C

0 K: -273.15 °C
100 K: -173.15 °C
Formula: °C = K − 273.15
Measures: Temperature
Price: Free
Works offline: Yes

Conversion chart

Kelvin to Celsius chart

Kelvins (K)	Degrees Celsius (°C)
0 K	-273.15 °C
200 K	-73.15 °C
250 K	-23.15 °C
273.15 K	0 °C
283.15 K	10 °C
293.15 K	20 °C
300 K	26.85 °C
310 K	36.85 °C
373.15 K	100 °C
400 K	126.85 °C
500 K	226.85 °C
1,000 K	726.85 °C

How it works

How to convert Kelvin to Celsius

Know the formula
°C = K − 273.15. In words: subtract 273.15.
Work an example
300 K → 26.85 °C. Round to two or three decimal places for everyday use.
Or type it in
Enter any value in the converter above and the answer appears instantly, in both directions.

Good to know

About temperature units

Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.
Kelvin starts at absolute zero, −273.15 °C, and uses the same step size as Celsius. It's written without a degree sign.
−40 is the same temperature in Celsius and Fahrenheit.

FAQ

Questions, answered

How do you convert Kelvin to Celsius?

To convert kelvins to degrees Celsius, subtract 273.15. The formula is °C = K − 273.15. For example, 300 K is 26.85 °C.

What is 300 Kelvin in Celsius?

300 kelvins is 26.85 degrees Celsius.

What is the formula for Kelvin to Celsius?

°C = K − 273.15. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.

Is this Kelvin to Celsius converter free?

Yes. It's free and works in any browser, even offline once the page has loaded. The answer updates as you type, and nothing you enter is sent anywhere.

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