-40 Celsius to Fahrenheit
-40 °C = -40 °F
Substituting into °F = °C × 9/5 + 32 gives -40 × 9/5 + 32 = -40 °F.
Nearby Celsius to Fahrenheit values
| degrees Celsius | degrees Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 18 °C | 64.4 °F |
| 20 °C | 68 °F |
| 21 °C | 69.8 °F |
| 22 °C | 71.6 °F |
Frequently asked questions
What is -40 Celsius in Fahrenheit?
-40 Celsius is -40 Fahrenheit. Substituting into °F = °C × 9/5 + 32 gives -40 × 9/5 + 32 = -40 °F.
How do you convert -40 Celsius to Fahrenheit?
Degrees Celsius and degrees Fahrenheit use different zero points, so you cannot convert them with a single multiplication. Apply the formula °F = °C × 9/5 + 32 instead. Applied to -40 Celsius, that gives -40 Fahrenheit.
How many degrees Celsius are in a degree Fahrenheit?
Degrees Celsius and degrees Fahrenheit start from different zero points, so there is no fixed ratio between them. Convert with °F = °C × 9/5 + 32 instead.
Convert any value
To convert a value other than -40, use the full Celsius to Fahrenheit converter, which includes the formula, the complete conversion chart and unit definitions.