18°F to Celsius

18°F is -7.8°C (265.37 K). 18°F equals about -7.8°C. This temperature is below the freezing point of water (0°C / 32°F). Expect ice, frost, and slippery surfaces outdoors.

Fahrenheit to Celsius

Instant two-way conversion with Kelvin and a live scale.

Fahrenheit°F

°F

Type to convert · Enter copies · Ctrl/⌘S swaps

Celsius°C

-7.8°C

Celsius

-7.8 °C

Fahrenheit

18.0 °F

Kelvin

265.4 K

Formula · worked example

°C = (18 − 32) × 5/9 = -7.8

Worked example

°C = (18 − 32) × 5/9 = -7.8

Context: below freezing. Reverse lookup: -7.8°C to Fahrenheit.

Nearby Fahrenheit values

Quick hops around 18°F

Fahrenheit	Celsius
13°F	-10.6°C
14°F	-10.0°C
15°F	-9.4°C
16°F	-8.9°C
17°F	-8.3°C
18°F	-7.8°C
19°F	-7.2°C
20°F	-6.7°C
21°F	-6.1°C
22°F	-5.6°C
23°F	-5.0°C

More tools: Fahrenheit to Celsius · Celsius to Fahrenheit · Body temperature