Kelvin to Celsius Converter
Convert kelvins to degrees Celsius (K to °C) instantly, with the formula and a conversion chart.
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How to convert kelvins to degrees Celsius
Subtract 273.15. °C = K − 273.15.
Example: 300 K = 26.85°C.
Turns scientific temperatures — lab data, gas laws, bulb color temperatures like 2700 K — into everyday Celsius.
Kelvin to Celsius conversion chart
| Kelvins | Degrees Celsius |
|---|---|
| 0 K | -273.15°C |
| 77 K | -196.15°C |
| 173.15 K | -100°C |
| 233.15 K | -40°C |
| 273.15 K | 0°C |
| 293.15 K | 20°C |
| 298.15 K | 25°C |
| 310.15 K | 37°C |
| 373.15 K | 100°C |
| 1,000 K | 726.85°C |
| 2,700 K | 2,426.85°C |
| 6,500 K | 6,226.85°C |
How to use this tool
- 1Type the number of kelvins in the Value box.
- 2The result in degrees Celsius appears instantly.
- 3Use the ⇄ button to convert degrees Celsius to kelvins instead, or pick any other unit.
Features
- Exact K to °C conversion using the standard definition.
- Results update as you type, rounded to 6 decimal places.
- Switch to any other length, weight, temperature, volume or speed unit.
Privacy
Everything is calculated in your browser. Nothing is sent to a server.
Frequently asked questions
Can a temperature in kelvin be negative?
No. 0 K is absolute zero, so every real temperature in kelvin is positive.
Is "2700 K" on a light bulb a temperature?
It is a color temperature describing warm, yellowish light — not how hot the bulb gets.
How do I convert degrees Celsius back to kelvins?
Use the swap button in the converter above, or the Celsius to Kelvin converter. Temperature scales have different zero points, so you can't simply divide by the factor.
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