-40 Celsius to Fahrenheit

-40 degrees Celsius equals -40 degrees Fahrenheit — the unique point where both scales meet.

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How to use this tool

Enter degrees celsius in the fields above.
Results update instantly as you type — or click Calculate.
Read your degrees fahrenheit and the full breakdown beneath it.

-40°C equals -40°F, the only temperature at which the Celsius and Fahrenheit scales give the same reading.