-21°C to Fahrenheit
-21°C is -5.8°F (252.15 K). -21°C is severe winter cold. Frostbite risk rises quickly outdoors; many cars and batteries struggle at this temperature.
Celsius to Fahrenheit
Instant two-way conversion with Kelvin and a live scale.
°C
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Fahrenheit°F
-5.8°F
Celsius
-21.0 °C
Fahrenheit
-5.8 °F
Kelvin
252.1 K
Formula · worked example
°F = -21 × 9/5 + 32 = -5.8
Worked example
°F = -21 × 9/5 + 32 = -5.8
Context: severe winter cold. Reverse lookup: -5.8°F to Celsius.
Nearby Celsius values
Quick hops around -21°C
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