Kelvin to Celsius Converter
Convert Kelvin to Celsius instantly with this free online converter. It applies the exact °C = K − 273.15 formula and shows the result as you type — handy for weather, cooking, and science homework.
menu_bookQuick Reference
- 0 °C = 32 °F = 273.15 K
- 100 °C = 212 °F
- °F = °C × 9/5 + 32
- K = °C + 273.15
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Use the swap button to quickly reverse a conversion. Results update in real time as you type, so there is no need to press a button.
How to Convert Kelvin to Celsius
To convert Kelvin to Celsius, subtract 273.15: °C = K − 273.15. For example, 300 K − 273.15 = 26.85°C, a warm summer day.
Kelvin to Celsius Conversion Table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 | -273.15 |
| 100 | -173.15 |
| 200 | -73.15 |
| 273.15 | 0 |
| 293.15 | 20 |
| 300 | 26.85 |
| 310.15 | 37 |
| 373.15 | 100 |
| 1000 | 726.85 |
Frequently Asked Questions
How do you convert Kelvin to Celsius?
Subtract 273.15 from the Kelvin value. The degree size is identical on both scales, so no multiplication is needed.
What is 0 K in Celsius?
0 K equals -273.15°C — absolute zero, the lowest temperature physically possible. Kelvin values are never negative.
What is room temperature in Kelvin?
Room temperature is usually taken as 293.15 K (20°C) to 298.15 K (25°C). The human body runs at about 310.15 K (37°C).
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