-17 Fahrenheit to Celsius
-17 °F ≈ -27.22 °C
-17 degrees Fahrenheit is approximately -27.22 degrees Celsius.
How to convert -17 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (-17 − 32) × 5/9°C = -49 × 5/9°C = -27.222222
So -17 °F = -27.222222 °C, or about -27.22 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -27 °C
- Rounded to one decimal place: -27.2 °C
Quick mental estimate: subtract 30 and halve it. For -17 °F that gives about -23.5 °C — off by 3.72 °C (13.7%). Use the exact formula when precision matters.
-17 Fahrenheit in other units
-27.22 °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
- -27.22 °C
- Degrees Réaumur
- -21.78 °Ré
- Degrees Delisle
- 190.83 °De
- Degrees Newton
- -8.98 °N
- Degrees Rømer
- -6.79 °Rø
- Kelvin
- 245.93 K
- Rankine
- 442.67 °R
-17 °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 -17 Fahrenheit in Celsius?
-17 degrees Fahrenheit is about -27.22 degrees Celsius (-17 °F ≈ -27.22 °C).
How do you convert -17 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (-17 − 32) × 5/9, °C = -49 × 5/9, °C = -27.222222.
How many degrees Fahrenheit is -27.22 °C?
-27.22 °C is about -17 degrees Fahrenheit.