-31 Celsius to Fahrenheit
-31 degrees Celsius equals
-23.8°F
-23.8 degrees Fahrenheit
-31°C is -23.8°F — deep-freeze territory, colder than a household freezer and cold enough to risk frostbite on exposed skin within minutes. -40°C is the single point where both scales agree, reading -40°F as well.
How to convert -31°C to °F
Formula
°F = °C × 9/5 + 32
Substituting -31°C
- -31 × 9/5 = -55.8
- -55.8 + 32 = -23.8
The two scales differ in both their zero point and their step size. A Fahrenheit degree is 5/9 the size of a Celsius degree, and the scales are offset by 32 degrees at the freezing point of water — which is why the conversion needs both a multiplication and an addition.
How -31°C compares
| Reference point | Temperature | Difference |
|---|---|---|
| Freezing point of water | 0°C / 32°F | 31°C (55.8°F) colder |
| Room temperature | 21°C / 69.8°F | 52°C (93.6°F) colder |
| Body temperature | 37°C / 98.6°F | 68°C (122.4°F) colder |
| Boiling point of water | 100°C / 212°F | 131°C (235.8°F) colder |