Kelvin to Celsius Formula
The complete formula for converting kelvin (K) to celsius (°C). See the formula, how it works, and worked examples below.
°C = K - 273.15
How the Formula Works
Temperature conversion between kelvin and celsius uses an offset formula, not a simple multiplication. This is because temperature scales have different zero points.
Worked Examples
0 K to °C
- Start with 0 K
- Subtract 273.15: 0 - 273.15 = -273.15
- Result: 0 K = -273.15°C
20 K to °C
- Start with 20 K
- Subtract 273.15: 20 - 273.15 = -253.15
- Result: 20 K = -253.15°C
37 K to °C
- Start with 37 K
- Subtract 273.15: 37 - 273.15 = -236.15
- Result: 37 K = -236.15°C
100 K to °C
- Start with 100 K
- Subtract 273.15: 100 - 273.15 = -173.15
- Result: 100 K = -173.15°C
200 K to °C
- Start with 200 K
- Subtract 273.15: 200 - 273.15 = -73.15
- Result: 200 K = -73.15°C
Reverse Formula: Celsius to Kelvin
K = °C + 273.15
See the full Celsius to Kelvin formula for worked examples.
Related
Frequently Asked Questions
The formula is: °C = K - 273.15. See the worked examples above for step-by-step breakdowns, or use the Kelvin to Celsius converter for instant results.
100 kelvin = -173.15 celsius. Apply the formula: °C = K - 273.15.