Degree Fahrenheit (°F)
5/9 of a kelvin; 0 °F is exactly 459.67 °R above absolute zero, so K = (°F + 459.67) × 5/9.
What is a degree Fahrenheit?
- Symbol
- °F
- Quantity
- Temperature
- Unit system
- US customary
- Definition
- 5/9 of a kelvin; 0 °F is exactly 459.67 °R above absolute zero, so K = (°F + 459.67) × 5/9.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used for weather, cooking and body temperature in the United States and a few other countries.
Degree Fahrenheit in other temperature units
- K = (°F + 459.67) ÷ 1.8Degree Fahrenheit to Kelvin converter
- °C = (°F − 32) ÷ 1.8Degree Fahrenheit to Degree Celsius converter
- °R = °F + 459.67Degree Rankine
Degree Fahrenheit quick reference
| Degree Fahrenheit | Kelvin | Degree Celsius | Degree Rankine |
|---|---|---|---|
| -40 °F | = 233.15 K | = -40 °C | = 419.67 °R |
| 0 °F | ≈ 255.3722222 K | ≈ -17.77777778 °C | = 459.67 °R |
| 32 °F | = 273.15 K | = 0 °C | = 491.67 °R |
| 50 °F | = 283.15 K | = 10 °C | = 509.67 °R |
| 60 °F | ≈ 288.7055556 K | ≈ 15.55555556 °C | = 519.67 °R |
| 68 °F | = 293.15 K | = 20 °C | = 527.67 °R |