Convert per degree fahrenheit to per degree celsius instantly. Type in either field — results update live.
Selected 1/°F values converted to 1/°C using the exact factor from this tool.
| 1/°F | 1/°C |
|---|---|
| 0.01 | 0.018 |
| 0.1 | 0.18 |
| 1 | 1.8 |
| 2 | 3.6 |
| 3 | 5.4 |
| 5 | 9 |
| 10 | 18 |
| 20 | 36 |
| 50 | 90 |
| 100 | 180 |
| 1,000 | 1,800 |
Exact conversion factors in both directions, plus a worked example.
1 1/°F = 1.8 1/°C
1 1/°C = 0.5555555556 1/°F
To convert per degree fahrenheit to per degree celsius, multiply by 1.8.
To convert per degree celsius to per degree fahrenheit, multiply by 0.5555555556.
Example: convert 10 1/°F to 1/°C
10 × 1.8 = 18 1/°C
Short background on the units used in this conversion.
Per degree Fahrenheit (1/°F) is larger than per kelvin because a Fahrenheit degree interval is smaller — 1/°F equals 1.8/K.
US material tables often list expansion in 1/°F; convert carefully because per-degree coefficients scale inversely with interval size.
Per degree Celsius (1/°C) equals per kelvin because a Celsius degree interval matches a kelvin interval in size.
1/°C expansion coefficients appear in metric material datasheets alongside 1/K values for the same physical quantity.
1/°C = 1/°F × 1.81/°F = 1/°C × 0.5555555556, using the same exact factors as this converter.Jump to any thermal expansion conversion starting from per degree fahrenheit — including the reverse direction and every other unit in our dataset.