21 °F to K
21 degrees Fahrenheit in kelvin
21 °F = 267.0389 K
K = (°F + 459.67) × 5/9
21 degrees Fahrenheit is 267.0389 kelvin. To get there, use K = (°F + 459.67) × 5/9.
Values either side
| Degrees Fahrenheit | Kelvin |
|---|---|
| 17 °F | 264.8167 |
| 18 °F | 265.3722 |
| 19 °F | 265.9278 |
| 20 °F | 266.4833 |
| 21 °F ← | 267.0389 |
| 22 °F | 267.5944 |
| 23 °F | 268.15 |
| 24 °F | 268.7056 |
| 25 °F | 269.2611 |
How the conversion works
The relationship is K = (°F + 459.67) × 5/9. 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 °F in kelvin?
- 21 °F is 267.0389 K.
- How do you convert degrees Fahrenheit to kelvin?
- Use K = (°F + 459.67) × 5/9.
Related pages
- Degrees Fahrenheit to kelvin Full table and converter
- 21 K to °F The other direction
- 17 °F to K 264.8167 K
- 18 °F to K 265.3722 K
- 19 °F to K 265.9278 K
- 20 °F to K 266.4833 K
- 22 °F to K 267.5944 K
- 23 °F to K 268.15 K
- 24 °F to K 268.7056 K
- 25 °F to K 269.2611 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