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Kelvin to Celsius Converter

VerifiedLast reviewed: Mar 3, 2026Fact checked by: Adil BaltiFactor: 273.15 K = 0 °CSource: NOAA
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What is Kelvin to Celsius Converter

A Kelvin to Celsius converter calculates temperature values from Kelvin (K) to degrees Celsius (°C). Based on the absolute temperature scale where 0K equals -273.15°C, this tool provides precise thermal conversions for chemistry and physics.

Definitions of Kelvin and Celsius

What is Kelvin?

Kelvin is the base unit of temperature in the International System of Units (SI). It is an absolute scale starting at absolute zero, where thermal motion ceases.

What is Celsius?

Celsius is a temperature scale where water freezes at zero degrees and boils at one hundred degrees under standard pressure. It is the primary metric temperature unit worldwide.

Kelvin to Celsius Formula

C=K273.15{}^{\circ}\text{C} = \text{K} - 273.15

Conversion explanation: Subtract 273.15 from the Kelvin temperature.

How to Convert Kelvin to Celsius

To convert temperatures from kelvin to celsius, you can use the official formula:

°C = K - 273.15

Step-by-Step Example

Converting 300 K scientific laboratory temperature into Celsius:

  • Subtract 273.15 from the Kelvin temperature: 300 - 273.15 = 26.85
  • Result: 300 K is equal to 26.85 °C.

Kelvin to Celsius Conversion Table

Kelvin [k]Celsius [°c]
0.01 k-273.14 °c
0.1 k-273.05 °c
1 k-272.15 °c
2 k-271.15 °c
3 k-270.15 °c
4 k-269.15 °c
5 k-268.15 °c
6 k-267.15 °c
7 k-266.15 °c
8 k-265.15 °c
9 k-264.15 °c
10 k-263.15 °c
20 k-253.15 °c
30 k-243.15 °c
50 k-223.15 °c
100 k-173.15 °c
500 k226.85 °c
1000 k726.85 °c
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