21 K to °C
21 kelvin in degrees Celsius
21 K = -252.15 °C
°C = K − 273.15
21 kelvin is -252.15 degrees Celsius. To get there, use °C = K − 273.15.
Values either side
| Kelvin | Degrees Celsius |
|---|---|
| 17 K | -256.15 |
| 18 K | -255.15 |
| 19 K | -254.15 |
| 20 K | -253.15 |
| 21 K ← | -252.15 |
| 22 K | -251.15 |
| 23 K | -250.15 |
| 24 K | -249.15 |
| 25 K | -248.15 |
How the conversion works
The relationship is °C = K − 273.15. Both units measure temperature, so the conversion is a fixed formula that never changes. Temperature scales are the one common case where converting is not just multiplication — Celsius and Fahrenheit each put their zero in a different place, so an offset is applied as well as a scale factor.
Common questions
- What is 21 K in degrees Celsius?
- 21 K is -252.15 °C.
- How do you convert kelvin to degrees Celsius?
- Use °C = K − 273.15.
Related pages
- Kelvin to degrees Celsius Full table and converter
- 21 °C to K The other direction
- 17 K to °C -256.15 °C
- 18 K to °C -255.15 °C
- 19 K to °C -254.15 °C
- 20 K to °C -253.15 °C
- 22 K to °C -251.15 °C
- 23 K to °C -250.15 °C
- 24 K to °C -249.15 °C
- 25 K to °C -248.15 °C
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place