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Kelvin to Celsius

Convert Kelvin (K) to Celsius (°C) — instant and accurate

0 K = -273.15 °C  ·  100 K = -173.15 °C

-272.15 °C

Kelvin to Celsius Conversion Table

KelvinCelsius
-40 K-313.15 °C
-20 K-293.15 °C
-10 K-283.15 °C
0 K-273.15 °C
10 K-263.15 °C
20 K-253.15 °C
25 K-248.15 °C
30 K-243.15 °C
37 K-236.15 °C
50 K-223.15 °C
75 K-198.15 °C
100 K-173.15 °C
150 K-123.15 °C
200 K-73.15 °C
250 K-23.15 °C
500 K226.85 °C
1000 K726.85 °C

Formula

C = K − 273.15
K = C + 273.15
Example: 100 K = -173.15 °C

About the Kelvin-to-Celsius Conversion

Converting Kelvin to Celsius is needed when interpreting scientific or thermodynamic temperatures in everyday terms. Subtract 273.15 from the Kelvin value. Absolute zero (0 K) is −273.15 °C.

Real-World Examples

  • 273.15 K (water freezing) = 0 °C
  • 373.15 K (water boiling) = 100 °C
  • 0 K (absolute zero) = -273.15 °C
  • 298.15 K (room temperature) = 25 °C

Celsius to Kelvin (Reverse)

CelsiusKelvin
-40 °C233.15 K
-20 °C253.15 K
-10 °C263.15 K
0 °C273.15 K
10 °C283.15 K
20 °C293.15 K
25 °C298.15 K
30 °C303.15 K
37 °C310.15 K
50 °C323.15 K
75 °C348.15 K
100 °C373.15 K
150 °C423.15 K
200 °C473.15 K
250 °C523.15 K
500 °C773.15 K
1000 °C1273.15 K

Frequently Asked Questions

What is the formula to convert Kelvin to Celsius?

C = K − 273.15

What is 0 K in Celsius?

0 K equals -273.15 °C.

What is 100 K in Celsius?

100 K equals -173.15 °C.

How do I convert Celsius back to Kelvin?

K = C + 273.15

What is 0 K in Celsius?

0 K (absolute zero) equals -273.15 °C.

Is the Kelvin-to-Celsius conversion exact?

Yes. The conversion between Kelvin and Celsius is defined exactly by international agreement.

About Kelvin and Celsius

The kelvin (symbol K, with no degree sign) is the SI base unit of thermodynamic temperature. 0 K is absolute zero; one kelvin equals one degree Celsius in size.

The degree Celsius (symbol °C) is the everyday temperature scale used in most of the world. Water freezes at 0 °C and boils at 100 °C at standard atmospheric pressure.

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