Celsius to Kelvin (°C to K) Converter
1 Celsius equals 274.15 Kelvin (1 °C = 274.15 K). Convert Celsius to Kelvin with formula, table, and examples.
To convert Celsius to kelvin, simply add 273.15. This is the simplest temperature conversion because both scales use the same degree size - they differ only in their zero point. Kelvin is essential in science, while Celsius dominates everyday life in most countries.
How to Convert Celsius to Kelvin
- Take your Celsius value
- Add 273.15
- The result is in Kelvin
- Read the result in Kelvin
Common Celsius to Kelvin Conversions
| Celsius (°C) | Kelvin (K) | Status |
|---|---|---|
| -40 °C | 233.15 K | |
| -20 °C | 253.15 K | |
| -10 °C | 263.15 K | |
| 0 °C | 273.15 K | |
| 5 °C | 278.15 K | |
| 10 °C | 283.15 K | |
| 15 °C | 288.15 K | |
| 20 °C | 293.15 K | |
| 25 °C | 298.15 K | |
| 30 °C | 303.15 K | |
| 36 °C | 309.15 K | |
| 37 °C | 310.15 K | |
| 40 °C | 313.15 K | |
| 50 °C | 323.15 K | |
| 60 °C | 333.15 K | |
| 80 °C | 353.15 K | |
| 100 °C | 373.15 K | |
| 150 °C | 423.15 K | |
| 180 °C | 453.15 K | |
| 200 °C | 473.15 K | |
| 220 °C | 493.15 K | |
| 250 °C | 523.15 K | |
| 300 °C | 573.15 K | |
| 500 °C | 773.15 K | |
| 1,000 °C | 1,273.15 K |
Good to Know About Celsius to Kelvin Conversion
In everyday life, nobody uses kelvin - it's purely for science and engineering. But in physics classrooms worldwide, the conversion from Celsius to kelvin is one of the first things students learn.
Celsius to Kelvin: What You Need to Know
Room temperature of 20°C is 293.15 K. Water boils at 373.15 K (100°C) and freezes at 273.15 K (0°C). Scientists use kelvin for thermodynamic calculations, gas law equations, and expressing color temperature. When a recipe says 180°C and a physics formula needs kelvin, just add 273.15.
What is a Celsius? °C
A metric temperature scale where 0°C is the freezing point and 100°C is the boiling point of water. Used worldwide except in the US.
Learn more about Celsius →What is a Kelvin? K
The SI base unit of temperature. 0 K is absolute zero, the theoretical lowest possible temperature. Used in science and engineering.
Learn more about Kelvin →Going the other way? Use our Kelvin to Celsius converter.
Celsius to Kelvin FAQ
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Add 273.15 to the Celsius temperature. For example, 25°C + 273.15 = 298.15 K. This is an exact offset - no multiplication needed because both scales have identical degree sizes.
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The kelvin is an SI base unit, not a degree-based scale. Since 1967, it is written as simply 'K' without a degree symbol, unlike °C or °F. Writing '°K' is incorrect.
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0°C equals exactly 273.15 K. This is the freezing point of water at standard pressure and the offset between the two scales.
Non-Frequently Asked Questions About Celsius to Kelvin
Questions nobody should ask - but someone did.
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It is Calvin Klein, not Kelvin Klein. Lord Kelvin (William Thomson) was a physicist who worked on thermodynamics. Calvin Klein makes underwear. Both are famous, but for very different contributions to human comfort.
Related Articles About Celsius to Kelvin
Need the reverse? Use our Kelvin to Celsius converter. See all Temperature converters.