Convert Kelvin to Celsius
1 K = -272.15 °C. Change the amount below, or read the formula and the reference table further down.
1 Kelvin equals
Celsius
1 K = -272.15 °C
The formula
Kelvin and Celsius do not share a zero point, so the conversion needs an offset as well as a scale factor.
°C = (K × 1 − 273.15 − 0) ÷ 1
Going the other way? Convert Celsius to Kelvin.
Kelvin to Celsius table
Common values, rounded for reading.
| Kelvin (K) | Celsius (°C) |
|---|---|
| 1 | -272.15 |
| 2 | -271.15 |
| 3 | -270.15 |
| 4 | -269.15 |
| 5 | -268.15 |
| 6 | -267.15 |
| 7 | -266.15 |
| 8 | -265.15 |
| 9 | -264.15 |
| 10 | -263.15 |
| 15 | -258.15 |
| 20 | -253.15 |
| 25 | -248.15 |
| 30 | -243.15 |
| 40 | -233.15 |
| 50 | -223.15 |
| 75 | -198.15 |
| 100 | -173.15 |
| 250 | -23.15 |
| 500 | 226.85 |
| 1,000 | 726.85 |
Questions people ask
- What is 1 K in Celsius?
- 1 K is -272.15 °C. The two scales have different zero points, so the gap between them is not a fixed ratio.
- How do I convert Kelvin to Celsius by hand?
- These scales have different zero points, so you cannot use a single multiplier. Apply °C = (K × 1 − 273.15 − 0) ÷ 1.
- What is 1 Kelvin in Celsius?
- 1 Kelvin is -272.15 Celsius.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.