🔄 Temperature Updated2026-07-19
Celsius to Kelvin Converter.
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Quick answer
To convert Celsius to Kelvin, use K = °C + 273.15. For example, 20 °C = 293.15 K. Type any value below and see all three scales.
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Temperature Converter
37 °C = 98.6 °F = 310.15 K
Around normal human body temperature (37 °C / 98.6 °F).
✨ Live · Type in any field and the other two update. °F = °C × 9/5 + 32 · K = °C + 273.15
🔢 Quick reference
Celsius to Kelvin conversion table.
°C → K
| -40 °C | 233.15 K |
| -20 °C | 253.15 K |
| 0 °C | 273.15 K |
| 10 °C | 283.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 30 °C | 303.15 K |
| 37 °C | 310.15 K |
| 40 °C | 313.15 K |
| 100 °C | 373.15 K |
K → °C
| 0 K | -273.15 °C |
| 100 K | -173.15 °C |
| 200 K | -73.15 °C |
| 273.15 K | 0 °C |
| 293.15 K | 20 °C |
| 300 K | 26.85 °C |
| 310 K | 36.85 °C |
| 373.15 K | 100 °C |
❓ FAQ
°C to K FAQ.
What is 20 °C in Kelvin?
20 °C equals 293.15 K. Using the formula K = °C + 273.15, you convert directly without a lookup table. The reference table on this page lists more common Celsius values converted to Kelvin.
How do you convert Celsius to Kelvin?
Apply the formula K = °C + 273.15. Temperature scales don't share a zero point, so you can't just multiply by a single factor the way you would for length or weight. You have to shift as well as scale. For example, 20 °C works out to 293.15 K.
Why isn't Celsius to Kelvin a simple multiplication?
Because the two scales start at different points. Celsius is used for everyday temperature in most of the world, while Kelvin is used for the SI temperature unit, used in science. Converting between them means both rescaling the degree size and offsetting the zero, which is why the formula has both a multiply and an add or subtract.
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