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Fahrenheit to Celsius

−40 °F in Celsius

−40 °F is −40 °C.

Celsius
-40 °C
Rounded
-40 °C
Kelvin
233.15 K

How it's calculated

  1. °C = (°F − 32) × 5/9
  2. −40 − 32 = −72
  3. −72 × 5/9 = −40 °C

−40 is the one temperature that reads the same in Fahrenheit and Celsius.

Nearby fahrenheit to celsius conversions

FahrenheitCelsiusGas Mark
−40 °F−40 °C—
0 °F−17.78 °C—
32 °F0 °C—
50 °F10 °C—
60 °F15.56 °C—
65 °F18.33 °C—
68 °F20 °C—
70 °F21.11 °C—
72 °F22.22 °C—
75 °F23.89 °C—
80 °F26.67 °C—