-9 Celsius to Fahrenheit
-9 degrees Celsius equals
15.8°F
15.8 degrees Fahrenheit
-9°C is 15.8°F, 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°C to °F
Formula
°F = °C × 9/5 + 32
Substituting -9°C
- -9 × 9/5 = -16.2
- -16.2 + 32 = 15.8
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 -9°C compares
| Reference point | Temperature | Difference |
|---|---|---|
| Freezing point of water | 0°C / 32°F | 9°C (16.2°F) colder |
| Room temperature | 21°C / 69.8°F | 30°C (54°F) colder |
| Body temperature | 37°C / 98.6°F | 46°C (82.8°F) colder |
| Boiling point of water | 100°C / 212°F | 109°C (196.2°F) colder |