A temperature is a numerical measure of hot and cold. Its measurement is by detection of heat radiation, particle velocity, kinetic energy, or most commonly, by the bulk behavior of a thermometric material. It may be calibrated in any of various temperature scales, Celsius, Fahrenheit, Kelvin, etc.
| from Fahrenheit | to Fahrenheit | |
|---|---|---|
| Celsius | [°C] = ([°F] - 32) × 5/9 | [°F] = [°C] × 9/5 + 32 |
| Kelvin | [K] = ([°F] + 459.67) × 5/9 | [°F] = [K] × 9/5 - 459.67 |
| Rankine | [°R] = [°F] + 459.67 | [°F] = [°R] - 459.67 |
| Delisle | [°De] = (212 - [°F]) × 5/6 | [°F] = 212 - [°De] × 6/5 |
| Newton | [°N] = ([°F] - 32) × 11/60 | [°F] = [°N] × 60/11 + 32 |
| Réaumur | [°Ré] = ([°F] - 32) × 4/9 | [°F] = [°Ré] × 9/4 + 32 |
| Romer | [°Ro] = ([°F] - 32) × 7/24 + 7.5 | [°F] = ([°Ro] - 7.5) × 24/7 + 32 |