-9 Fahrenheit to Celsius
-9 degrees Fahrenheit equals
-22.78°C
-22.78 degrees Celsius
-9°F is -22.78°C, well below the point where water freezes. Roads ice over here, and this is where winter forecasts in northern climates spend most of the season. For reference, water freezes at 0°C, or 32°F.
How to convert -9°F to °C
Formula
°C = (°F − 32) × 5/9
Substituting -9°F
- -9 − 32 = -41
- -41 × 5/9 = -22.78
Fahrenheit places the freezing point of water at 32 rather than 0, so that offset comes off first. What remains is then scaled by 5/9, because a Celsius degree covers 1.8 times as much temperature change as a Fahrenheit degree.
How -9°F compares
| Reference point | Temperature | Difference |
|---|---|---|
| Freezing point of water | 0°C / 32°F | 22.8°C (41°F) colder |
| Room temperature | 21°C / 69.8°F | 43.8°C (78.8°F) colder |
| Body temperature | 37°C / 98.6°F | 59.8°C (107.6°F) colder |
| Boiling point of water | 100°C / 212°F | 122.8°C (221°F) colder |