Convert Celsius to Kelvin
1 °C = 274.15 K. Change the amount below, or read the formula and the reference table further down.
1 Celsius equals
Kelvin
1 °C = 274.15 K
The formula
Celsius and Kelvin do not share a zero point, so the conversion needs an offset as well as a scale factor.
K = (°C × 1 + 0 + 273.15) ÷ 1
Going the other way? Convert Kelvin to Celsius.
Celsius to Kelvin table
Common values, rounded for reading.
| Celsius (°C) | Kelvin (K) |
|---|---|
| 1 | 274.15 |
| 2 | 275.15 |
| 3 | 276.15 |
| 4 | 277.15 |
| 5 | 278.15 |
| 6 | 279.15 |
| 7 | 280.15 |
| 8 | 281.15 |
| 9 | 282.15 |
| 10 | 283.15 |
| 15 | 288.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 40 | 313.15 |
| 50 | 323.15 |
| 75 | 348.15 |
| 100 | 373.15 |
| 250 | 523.15 |
| 500 | 773.15 |
| 1,000 | 1,273.15 |
Questions people ask
- What is 1 °C in Kelvin?
- 1 °C is 274.15 K. The two scales have different zero points, so the gap between them is not a fixed ratio.
- How do I convert Celsius to Kelvin by hand?
- These scales have different zero points, so you cannot use a single multiplier. Apply K = (°C × 1 + 0 + 273.15) ÷ 1.
- What is 1 Celsius in Kelvin?
- 1 Celsius is 274.15 Kelvin.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.