Kelvin to Celsius Converter
Convert Kelvin to Celsius instantly. Enter a temperature and get the exact Celsius value, with the formula and a reference table.
How to convert Kelvin to Celsius
°C = K − 273.15
Celsius, Fahrenheit and Kelvin are three temperature scales with different zero points and step sizes, so converting between them means shifting and rescaling — not just multiplying. This tool applies the exact Kelvin-to-Celsius formula, so results are accurate to the decimal.
10 Kelvin = -263.15 Celsius. Multiply your Kelvin figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? Celsius to Kelvin
Kelvin to Celsius table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 1 | -272.15 |
| 2 | -271.15 |
| 3 | -270.15 |
| 5 | -268.15 |
| 10 | -263.15 |
| 20 | -253.15 |
| 25 | -248.15 |
| 50 | -223.15 |
| 100 | -173.15 |
| 250 | -23.15 |
| 500 | 226.85 |
| 1,000 | 726.85 |
Frequently asked questions
How do you convert Kelvin to Celsius?
Use the formula °C = K − 273.15. Type a value into the box above and the converted temperature appears instantly.
What is a common reference point?
Water freezes at 0°C / 32°F / 273.15 K and boils at 100°C / 212°F / 373.15 K at sea level — handy anchors to sanity-check any conversion.
Why isn't it a simple multiplication?
Because the scales don't share a zero. Fahrenheit's zero and Celsius's zero are different temperatures, so you shift as well as scale.