Temperature
Kto°C
Convert kelvin (K) to degrees Celsius (°C).
Converter
K
Accepts numbers or expressions, e.g. 150 + 14.7
Result
°C
Rendered to 6 significant figures.
Formula
Formula
°C = K − 273.15
Temperature conversions involve different scale zero-points, so a single multiplicative factor does not exist. Apply the formula to each value individually.
Worked example
Convert 300 K to °C.
- 01300 − 273.15 = 26.8500 °C
Result300 K = 26.85 °C
Conversion table
| K | °C |
|---|---|
| 0 | -273.15 |
| 100 | -173.15 |
| 200 | -73.15 |
| 273.15 | 0 |
| 300 | 26.85 |
| 400 | 126.85 |
| 500 | 226.85 |
| 700 | 426.85 |
| 1000 | 726.85 |
| 1500 | 1226.8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the formula to convert K to °C?
Temperature conversions are not a single multiplier because the scales have different zero points. Use °C = K − 273.15 to convert any value of K to °C.
How do I convert 1 K to °C?
1 K corresponds to -272.15 °C. Apply the formula °C = K − 273.15 to your value.
How do I convert °C back to K?
Use the inverse formula. For example, to go from °C back to K, rearrange °C = K − 273.15 for K. See the °C to K page for the direct formula.
When would I need to convert kelvin to degree Celsius?
Temperature scale conversions are routine in process engineering: instrumentation often reads in °C or °F, while thermodynamic calculations (gas laws, enthalpy) require absolute units (K or °R). Always use absolute units for any equation involving a ratio of temperatures.
Is the conversion exact?
Yes — the temperature scale relationships are exact by definition (the Celsius–Kelvin offset is 273.15 exactly; the Fahrenheit–Rankine offset is 459.67 exactly).