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Kelvin to Celsius (K to °C)

1 K = -272.15 °C. Enter any value below to convert kelvin to degrees Celsius instantly, or use the temperature converter for every other unit.

Maintained by Jairo TunisseLast updated Editorial policy

1 K = -272.15 °C

°C = K − 273.15
1 °C = 274.15 K (temperature scales have offsets, so this is a single point, not a factor)

Convert temperature

Common temperature conversions

−40 °C−40 °F
0 °C32 °F
20 °C68 °F
37 °C98.6 °F
100 °C212 °F
32 °F0 °C
98.6 °F37 °C
0 K−273.15 °C

Kelvin to Celsius conversion table

Kelvin to Celsius
Kelvin (K)Celsius (°C)
0 K-273.15 °C
77 K-196.15 °C
233.15 K-40 °C
273.15 K0 °C
293.15 K20 °C
298.15 K25 °C
310.15 K37 °C
373.15 K100 °C

The formula

°C = K − 273.15

0 K = absolute zero = −273.15 °C. K = °C + 273.15. These are exact definitions, so the only rounding is in the displayed result (10 significant digits).

When you need it

Kelvin to Celsius turns lab and physics values into everyday temperatures. Subtract 273.15. Liquid nitrogen boils at about 77 K, which is around −196 °C.

Frequently asked questions

How do I convert kelvin to degrees Celsius?

Use °C = K − 273.15. For example, 273.15 K = 0 °C.

What is 1 K in °C?

1 K = -272.15 °C.

Can kelvin be negative?

No. 0 K is absolute zero, the lowest possible temperature; the converter rejects anything below it.

Is it “degrees kelvin”?

No, just “kelvin” (K). The unit has no degree sign.