Kelvin to Celsius Converter
1 kelvin = -272.15 degrees Celsius
Type a value in either box: the conversion between kelvins (K) and degrees Celsius (°C) updates instantly.
Good to know
Room temperature (about 20–25 °C) is roughly 293–298 K. The color of light bulbs is also given in kelvins, for example 2,700 K for warm white.
How to convert kelvins to degrees Celsius
Temperature scales have different zero points, so you cannot simply multiply. Use this formula:
°C = K − 273.15
Worked examples
- 0 K = -273.15 °C
- 273.15 K = 0 °C
- 300 K = 26.85 °C
- 373.15 K = 100 °C
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 0 K | -273.15 °C |
| 50 K | -223.15 °C |
| 100 K | -173.15 °C |
| 200 K | -73.15 °C |
| 250 K | -23.15 °C |
| 273.15 K | 0 °C |
| 280 K | 6.85 °C |
| 290 K | 16.85 °C |
| 293.15 K | 20 °C |
| 298.15 K | 25 °C |
| 300 K | 26.85 °C |
| 310 K | 36.85 °C |
| 350 K | 76.85 °C |
| 373.15 K | 100 °C |
| 500 K | 226.85 °C |
| 1,000 K | 726.85 °C |
About the units
Kelvin (K)
The kelvin (K) is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C), uses steps the same size as Celsius degrees and is written without a degree sign.
Celsius (°C)
The Celsius scale puts the freezing point of water at 0 °C and its boiling point at 100 °C at standard atmospheric pressure. It is used in almost every country.
Frequently asked questions
How do I convert kelvins to degrees Celsius?
°C = K − 273.15What is 273.15 K in degrees Celsius?
Conversion factors use exact international definitions where they exist (for example 1 inch = 2.54 cm and 1 lb = 0.45359237 kg). Results are rounded for display only.