How to use it
- Type the size of the temperature change. A dot or a comma works as the decimal separator.
- Choose the unit you have and the unit you need. The ⇄ button swaps them.
- The table shows the same difference in all four units.
Conversion factors
| Unit | In kelvin |
|---|---|
| 1 K | 1 |
| 1 °C | 1 |
| 1 °F | 5/9 = 0.55556 |
| 1 °R | 5/9 = 0.55556 |
Worked example
A room warms by 7.5 °C. In Fahrenheit that is 7.5 × 9/5 = 13.5 °F, not 45.5 °F. A thermostat swing of 2 °F is 2 × 5/9 = 1.11 K.
Tips
- Writing Δ or “change of” before the unit makes clear that a difference is meant.
- Never add or subtract 32 when converting a difference.