How to convert kelvin to degrees Celsius
Kelvin and Celsius are different temperature scales, so converting isn't a simple ratio — you apply a formula that accounts for both the scale and the offset between them.
Formula: °C = K − 273.15. For example, 10 K = -263.15 °C.
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| -40 | -313.15 |
| 0 | -273.15 |
| 10 | -263.15 |
| 20 | -253.15 |
| 25 | -248.15 |
| 30 | -243.15 |
| 37 | -236.15 |
| 100 | -173.15 |
Kelvin and Celsius explained
Kelvin (K): The SI base unit of temperature, starting at absolute zero (0 K = −273.15 °C).
Celsius (°C): A scale where water freezes at 0° and boils at 100°, used in most of the world.
When you'd convert kelvin to degrees Celsius
Switching between Kelvin and Celsius comes up with weather, cooking and science — the US reports temperature in °F while most of the world uses °C, and scientific work uses kelvin. This converter gives the exact value so you never have to estimate.
Frequently asked questions
How many degrees Celsius are in a kelvin?
Temperature isn't a simple ratio — use °C = K − 273.15. For example, -253.15 °C corresponds to 20 K.
What is the formula to convert kelvin to degrees Celsius?
°C = K − 273.15. Apply it directly to your temperature.
What is 2 kelvin in degrees Celsius?
2 K = -271.15 °C. You can enter any value in the converter above to get an instant result.
Is this Kelvin to Celsius converter accurate?
Yes. It uses the standard conversion formula defined by BIPM — SI Brochure (definition of the kelvin), so results are exact to several decimal places.