Celsius to Kelvin
Convert degrees Celsius to kelvins
"Celsius to Kelvin" Calculator
How to convert degrees Celsius to kelvins
Worked example: 25 °C = 298.15 K
25 °C + 273.15 = 298.15 K
Rule: K = °C + 273.15 — the kelvin scale starts at absolute zero, 0 K = -273.15 °C, and a kelvin is the same step as a degree Celsius.
| °C | K | Usually |
|---|---|---|
| -273.15 °C | 0 K | absolute zero |
| 0 °C | 273.15 K | weather |
| 20 °C | 293.15 K | weather |
| 25 °C | 298.15 K | weather |
| 27 °C | 300.15 K | weather |
| 37 °C | 310.15 K | body temperature |
| 100 °C | 373.15 K | — |
| 1,000 °C | 1,273.15 K | — |
See Also
- Kelvin to Celsius - Convert kelvins to degrees Celsius
- Fahrenheit to Kelvin - Convert degrees Fahrenheit to kelvins
- Celsius to Fahrenheit - Convert degrees Celsius to degrees Fahrenheit
FAQ
What is the formula to convert Celsius to Kelvin?
K = °C + 273.15: add 273.15 to the temperature in degrees Celsius. A change of 1 °C is the same as a change of 1 K.
What is 25 degrees Celsius in Kelvin?
25 °C = 298.15 K — the standard room temperature of chemistry tables.
Why do gas-law formulas use kelvins?
Formulas like pV = nRT need absolute temperature, counted from absolute zero (0 K = -273.15 °C); in degrees Celsius the same law would give nonsense at 0 °C.