celsius to kelvin converter
1 Celsius equals 274.15 kelvin. Conversions use K = °C × 1 + 273.15
°C → 274.15 K
K = °C × 1 + 273.15
Converter
Worked examples
- 1 °C = 274.15 K
- 2 °C = 275.15 K
- 5 °C = 278.15 K
- 10 °C = 283.15 K
- 100 °C = 373.15 K
Celsius to kelvin conversion table
| °C | K | Arithmetic |
|---|---|---|
| 0 °C | 273.15 K | × 1 + 273.15 |
| 20 °C | 293.15 K | × 1 + 273.15 |
| 25 °C | 298.15 K | × 1 + 273.15 |
| 37 °C | 310.15 K | × 1 + 273.15 |
| 100 °C | 373.15 K | × 1 + 273.15 |
| 200 °C | 473.15 K | × 1 + 273.15 |
| -40 °C | 233.15 K | × 1 + 273.15 |
| -20 °C | 253.15 K | × 1 + 273.15 |
| -10 °C | 263.15 K | × 1 + 273.15 |
| 10 °C | 283.15 K | × 1 + 273.15 |
| 15 °C | 288.15 K | × 1 + 273.15 |
| 30 °C | 303.15 K | × 1 + 273.15 |
| 32 °C | 305.15 K | × 1 + 273.15 |
| 35 °C | 308.15 K | × 1 + 273.15 |
| 40 °C | 313.15 K | × 1 + 273.15 |
| 50 °C | 323.15 K | × 1 + 273.15 |
| 68 °C | 341.15 K | × 1 + 273.15 |
| 70 °C | 343.15 K | × 1 + 273.15 |
| 75 °C | 348.15 K | × 1 + 273.15 |
| 80 °C | 353.15 K | × 1 + 273.15 |
| 90 °C | 363.15 K | × 1 + 273.15 |
| 98.6 °C | 371.75 K | × 1 + 273.15 |
| 180 °C | 453.15 K | × 1 + 273.15 |
| 350 °C | 623.15 K | × 1 + 273.15 |
| 400 °C | 673.15 K | × 1 + 273.15 |
How to convert °C to K
- Take your value in Celsius.
- Multiply by 1, then apply the offset 273.15
- That is your answer in kelvin — no rounding needed until you choose a display precision.
Related conversions
K to °C°C to °F°F to KK to °Fall temperature units
Questions
How many kelvin in 1 Celsius?
Exactly 274.15 K. The factor follows from the definitions of both units, not from a measurement, so it is exact.
How do I convert °C to K?
Multiply the Celsius figure by 1 and then apply the offset 273.15 — or use the converter above, which updates as you type.
Is °C to K the same as K to °C?
No — they are inverses. One °C is 274.15 K, while one K is -272.15 °C.
What is 0 °C in K?
0 °C = 273.15 K (see the value page for the full arithmetic).