45 Celsius to Fahrenheit
45 degrees Celsius equals
113°F
113 degrees Fahrenheit
45°C is 113°F — hot to the touch. Household hot water arrives somewhere in this range; most water heaters are set near 49°C (120.2°F) to limit scalding risk.
How to convert 45°C to °F
Formula
°F = °C × 9/5 + 32
Substituting 45°C
- 45 × 9/5 = 81
- 81 + 32 = 113
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 45°C compares
| Reference point | Temperature | Difference |
|---|---|---|
| Freezing point of water | 0°C / 32°F | 45°C (81°F) warmer |
| Room temperature | 21°C / 69.8°F | 24°C (43.2°F) warmer |
| Body temperature | 37°C / 98.6°F | 8°C (14.4°F) warmer |
| Boiling point of water | 100°C / 212°F | 55°C (99°F) colder |