Celsius to Kelvin
About these units
Celsius
Celsius (°C) sets 0° at the freezing point of water and 100° at its boiling point at sea level. It is the everyday temperature scale in most of the world.
Kelvin
The kelvin is the SI base unit of temperature, starting at absolute zero (0 K = −273.15 °C), the coldest possible temperature. It uses the same step size as Celsius.
Conversion formula
Temperature scales differ by both a zero point and a step size, so conversion uses a formula rather than a single factor: °F = (°C × 9/5) + 32, and K = °C + 273.15.
Quick reference
| Celsius | Kelvin |
|---|---|
| 1 | 274.15 |
| 2 | 275.15 |
| 5 | 278.15 |
| 10 | 283.15 |
| 100 | 373.15 |
Frequently asked questions
- How many Kelvin are in one Celsius?
- 1 Celsius = 274.15 Kelvin.
- How many Celsius are in one Kelvin?
- 1 Kelvin = -272.15 Celsius.
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