Temperature
Celsius to Kelvin Converter
1 °C = 274.15 K. Enter any value and the result updates instantly.
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Accuracy and rounding
Use exact formulas for cooking, weather, and thermostat settings. Round the final value to the nearest degree when precision is not important.
Temperature conversions use scale formulas with offsets. The calculator keeps the formula result and rounds only what is displayed.
For weather or cooking, whole degrees are usually enough. For science or equipment settings, keep at least one decimal in Kelvin.
How to convert Celsius to Kelvin
- Type the Celsius value in the calculator.
- Keep Celsius selected as the from unit and Kelvin selected as the to unit.
- Use the instant result, or copy it with the copy button.
Celsius to Kelvin chart
| Celsius | Kelvin |
|---|---|
| -40 °C | 233.15 K |
| 0 °C | 273.15 K |
| 10 °C | 283.15 K |
| 20 °C | 293.15 K |
| 37 °C | 310.15 K |
| 100 °C | 373.15 K |
Formula
K = °C + 273.15
Example: 1 °C = 274.15 K.
Source
Temperature scale relationships from SI thermodynamic temperature definitions.
Common questions
How do I convert Celsius to Kelvin?
Enter the Celsius value in the converter, or multiply by the factor shown in the formula. K = °C + 273.15.
What should I watch out for?
Temperature conversions use scale formulas, so they are not simple multipliers.
Where does this temperature conversion come from?
Temperature scale relationships from SI thermodynamic temperature definitions. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.