C↔F ToolCelsius ↔ Fahrenheit

-18°C to Fahrenheit

-18°C is -0.4°F (255.15 K). -18°C is below the freezing point of water (0°C / 32°F). Expect ice, frost, and slippery surfaces outdoors.

Celsius to Fahrenheit

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

°C

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

Fahrenheit°F
-0.4°F

Celsius

-18.0 °C

Fahrenheit

-0.4 °F

Kelvin

255.1 K

Formula · worked example

°F = -18 × 9/5 + 32 = -0.4

Worked example

°F = -18 × 9/5 + 32 = -0.4

Context: below freezing. Reverse lookup: -0.4°F to Celsius.

Nearby Celsius values

Quick hops around -18°C

CelsiusFahrenheit
-23°C-9.4°F
-22°C-7.6°F
-21°C-5.8°F
-20°C-4.0°F
-19°C-2.2°F
-18°C-0.4°F
-17°C1.4°F
-16°C3.2°F
-15°C5.0°F
-14°C6.8°F
-13°C8.6°F

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