-40 celsiu to fahrenheit
Convert -40 Celsius to Fahrenheit — the answer, the arithmetic and the closest common values, all on one page.
Show your work
-40 °C × 1.8 + 32 = -40 °F.
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Questions
What is -40 Celsius in Fahrenheit?
-40 °C = -40 °F. The arithmetic: -40 °C × 1.8 + 32 = -40 °F.
How precise is this result?
The factor is exact by definition, so the only rounding is the display. Higher precision is available on the °C to °F converter page.
What is -40 °F in °C?
-40 °F = -40 °C — the inverse direction.