21 °C to K
21 degrees Celsius in kelvin
21 °C = 294.15 K
K = °C + 273.15
21 degrees Celsius is 294.15 kelvin. To get there, use K = °C + 273.15.
Values either side
| Degrees Celsius | Kelvin |
|---|---|
| 17 °C | 290.15 |
| 18 °C | 291.15 |
| 19 °C | 292.15 |
| 20 °C | 293.15 |
| 21 °C ← | 294.15 |
| 22 °C | 295.15 |
| 23 °C | 296.15 |
| 24 °C | 297.15 |
| 25 °C | 298.15 |
How the conversion works
The relationship is K = °C + 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 °C in kelvin?
- 21 °C is 294.15 K.
- How do you convert degrees Celsius to kelvin?
- Use K = °C + 273.15.
Related pages
- Degrees Celsius to kelvin Full table and converter
- 21 K to °C The other direction
- 17 °C to K 290.15 K
- 18 °C to K 291.15 K
- 19 °C to K 292.15 K
- 20 °C to K 293.15 K
- 22 °C to K 295.15 K
- 23 °C to K 296.15 K
- 24 °C to K 297.15 K
- 25 °C to K 298.15 K
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