Celsius to Kelvin Formula
The complete formula for converting celsius (°C) to kelvin (K). See the formula, how it works, and worked examples below.
K = °C + 273.15
How the Formula Works
Temperature conversion between celsius and kelvin uses an offset formula, not a simple multiplication. This is because temperature scales have different zero points.
Worked Examples
0 °C to K
- Start with 0°C
- Add 273.15: 0 + 273.15 = 273.15
- Result: 0°C = 273.15 K
20 °C to K
- Start with 20°C
- Add 273.15: 20 + 273.15 = 293.15
- Result: 20°C = 293.15 K
37 °C to K
- Start with 37°C
- Add 273.15: 37 + 273.15 = 310.15
- Result: 37°C = 310.15 K
100 °C to K
- Start with 100°C
- Add 273.15: 100 + 273.15 = 373.15
- Result: 100°C = 373.15 K
200 °C to K
- Start with 200°C
- Add 273.15: 200 + 273.15 = 473.15
- Result: 200°C = 473.15 K
Reverse Formula: Kelvin to Celsius
°C = K - 273.15
See the full Kelvin to Celsius formula for worked examples.
Related
Frequently Asked Questions
The formula is: K = °C + 273.15. See the worked examples above for step-by-step breakdowns, or use the Celsius to Kelvin converter for instant results.
100 celsius = 373.15 kelvin. Apply the formula: K = °C + 273.15.