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-40°C to Fahrenheit

-40°C = -40°F

Nearby temperatures

CelsiusFahrenheit
-44°C-47.2°F
-43°C-45.4°F
-42°C-43.6°F
-41°C-41.8°F
-40°C-40°F
-39°C-38.2°F
-38°C-36.4°F
-37°C-34.6°F
-36°C-32.8°F

The formula

°F = °C × 9/5 + 32

About the scales

Celsius — The Celsius scale puts the freezing point of water at 0° and its boiling point at 100° at standard pressure.

Fahrenheit — The Fahrenheit scale puts water’s freezing point at 32° and its boiling point at 212°, and is used mainly in the United States.

Frequently asked questions

What is -40°C in Fahrenheit?

-40°C is -40°F.

Is -40°C hot or cold?

Very cold — well below freezing.

Convert other temperatures

Full Celsius to Fahrenheit converter