5 Fahrenheit to Celsius
5 °F = -15 °C
5 degrees Fahrenheit equals -15 degrees Celsius.
How to convert 5 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (5 − 32) × 5/9°C = -27 × 5/9°C = -15
So 5 °F = -15 °C.
Rounded values and quick estimate
- Rounded to a whole number: -15 °C
- Rounded to one decimal place: -15 °C
Quick mental estimate: subtract 30 and halve it. For 5 °F that gives about -12.5 °C — off by 2.5 °C (16.7%). Use the exact formula when precision matters.
5 Fahrenheit in other units
-15 °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
- -15 °C
- Degrees Réaumur
- -12 °Ré
- Degrees Delisle
- 172.5 °De
- Degrees Newton
- -4.95 °N
- Degrees Rømer
- -0.375 °Rø
- Kelvin
- 258.15 K
- Rankine
- 464.67 °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 -15 degrees Celsius (5 °F = -15 °C).
How do you convert 5 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (5 − 32) × 5/9, °C = -27 × 5/9, °C = -15.
How many degrees Fahrenheit is -15 °C?
-15 °C is about 5 degrees Fahrenheit.