-5 Fahrenheit to Celsius
-5 °F ≈ -20.56 °C
-5 degrees Fahrenheit is approximately -20.56 degrees Celsius.
How to convert -5 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (-5 − 32) × 5/9°C = -37 × 5/9°C = -20.555556
So -5 °F = -20.555556 °C, or about -20.56 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -21 °C
- Rounded to one decimal place: -20.6 °C
Quick mental estimate: subtract 30 and halve it. For -5 °F that gives about -17.5 °C — off by 3.06 °C (14.9%). Use the exact formula when precision matters.
-5 Fahrenheit in other units
-20.56 °C is very cold weather, well below the freezing point of water. It is typical of a hard winter in northern climates; warm layers, gloves and a hat are essential outdoors.
- Celsius
- -20.56 °C
- Degrees Réaumur
- -16.44 °Ré
- Degrees Delisle
- 180.83 °De
- Degrees Newton
- -6.78 °N
- Degrees Rømer
- -3.29 °Rø
- Kelvin
- 252.59 K
- Rankine
- 454.67 °R
-5 °F and nearby values
About fahrenheit and celsius
The Fahrenheit scale puts water’s freezing point at 32 °F and boiling point at 212 °F. It is the everyday temperature scale in the United States.
The Celsius scale sets the freezing point of water at 0 °C and its boiling point at 100 °C (at sea level). It is used for everyday temperatures in almost every country.
Related conversions
Frequently asked questions
What is -5 Fahrenheit in Celsius?
-5 degrees Fahrenheit is about -20.56 degrees Celsius (-5 °F ≈ -20.56 °C).
How do you convert -5 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (-5 − 32) × 5/9, °C = -37 × 5/9, °C = -20.555556.
How many degrees Fahrenheit is -20.56 °C?
-20.56 °C is about -5.01 degrees Fahrenheit.