18 Celsius to Fahrenheit
18 degrees Celsius equals
64.4°F
64.4 degrees Fahrenheit
18°C equals 64.4°F, comfortable indoor temperature. Most thermostats are set somewhere in this band, and it is the standard range for storing and testing many household products.
How to convert 18°C to °F
Formula
°F = °C × 9/5 + 32
Substituting 18°C
- 18 × 9/5 = 32.4
- 32.4 + 32 = 64.4
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 18°C compares
| Reference point | Temperature | Difference |
|---|---|---|
| Freezing point of water | 0°C / 32°F | 18°C (32.4°F) warmer |
| Room temperature | 21°C / 69.8°F | 3°C (5.4°F) colder |
| Body temperature | 37°C / 98.6°F | 19°C (34.2°F) colder |
| Boiling point of water | 100°C / 212°F | 82°C (147.6°F) colder |