-40 °F to °C
-40 °F = -40 °C
How to convert -40 °F to °C
Formula: °C = (°F − 32) × 5/9
(-40 °F − 32) × 5/9 = -72 × 5/9 = -40 °C
−40 is the only temperature where Fahrenheit and Celsius read the same.
-40 °F in other units
- -40 °F = -40 °C
- -40 °F = 233.15 K (kelvin)
Convert another value
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Nearby values
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 °F | -40 °C |
| 0 °F | -17.78 °C |
| 10 °F | -12.22 °C |
| 20 °F | -6.67 °C |
| 32 °F | 0 °C |
| 40 °F | 4.44 °C |
| 50 °F | 10 °C |
| 60 °F | 15.56 °C |
| 65 °F | 18.33 °C |
| 68 °F | 20 °C |
| 70 °F | 21.11 °C |
Full Fahrenheit to Celsius converter and chart → · Convert the other way: Celsius to Fahrenheit →
Frequently asked questions
What is -40 °F in Celsius?
-40 °F = -40 °C. Formula: (-40 °F − 32) × 5/9 = -72 × 5/9 = -40 °C.
How do I convert Fahrenheit to Celsius?
Use °C = (°F − 32) × 5/9. You can type any value into the converter on this page to get the exact result.
Is -40 °F a notable value?
−40 is the only temperature where Fahrenheit and Celsius read the same.