-18°F in Celsius = -27.78°C
-27.78°C
-18 Fahrenheit is exactly equal to -27.78 degrees C.
Need to convert a different value?
Open Full Converter →Conversion Formula
(-18 - 32) × 5/9 = -27.78
To convert Fahrenheit to Celsius, apply this formula to any value.
Nearby Values
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -23 °F | -30.56 °C |
| -22 °F | -30 °C |
| -21 °F | -29.44 °C |
| -20 °F | -28.89 °C |
| -19 °F | -28.33 °C |
| -18 °F | -27.78 °C |
| -17 °F | -27.22 °C |
| -16 °F | -26.67 °C |
| -15 °F | -26.11 °C |
| -14 °F | -25.56 °C |
| -13 °F | -25 °C |
Convert Any Value
Need to convert a different Fahrenheit value? Use our full interactive converter:
Open Temperature ConverterFrequently Asked Questions
What is -18 Fahrenheit in Celsius?
-18 Fahrenheit is equal to -27.78 degrees C. The formula used is: (-18 - 32) × 5/9 = -27.78.
How do you convert Fahrenheit to Celsius?
To convert Fahrenheit to Celsius, use the formula: (-18 - 32) × 5/9 = -27.78. You can also use our interactive converter tool for any value.