-15 Fahrenheit to Celsius
-15 °F ≈ -26.11 °C
-15 degrees Fahrenheit is approximately -26.11 degrees Celsius.
How to convert -15 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (-15 − 32) × 5/9°C = -47 × 5/9°C = -26.111111
So -15 °F = -26.111111 °C, or about -26.11 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -26 °C
- Rounded to one decimal place: -26.1 °C
Quick mental estimate: subtract 30 and halve it. For -15 °F that gives about -22.5 °C — off by 3.61 °C (13.8%). Use the exact formula when precision matters.
-15 Fahrenheit in other units
-26.11 °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
- -26.11 °C
- Degrees Réaumur
- -20.89 °Ré
- Degrees Delisle
- 189.17 °De
- Degrees Newton
- -8.62 °N
- Degrees Rømer
- -6.21 °Rø
- Kelvin
- 247.04 K
- Rankine
- 444.67 °R
-15 °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 -15 Fahrenheit in Celsius?
-15 degrees Fahrenheit is about -26.11 degrees Celsius (-15 °F ≈ -26.11 °C).
How do you convert -15 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (-15 − 32) × 5/9, °C = -47 × 5/9, °C = -26.111111.
How many degrees Fahrenheit is -26.11 °C?
-26.11 °C is about -15 degrees Fahrenheit.