-11 Fahrenheit to Celsius
-11 °F ≈ -23.89 °C
-11 degrees Fahrenheit is approximately -23.89 degrees Celsius.
How to convert -11 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (-11 − 32) × 5/9°C = -43 × 5/9°C = -23.888889
So -11 °F = -23.888889 °C, or about -23.89 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -24 °C
- Rounded to one decimal place: -23.9 °C
Quick mental estimate: subtract 30 and halve it. For -11 °F that gives about -20.5 °C — off by 3.39 °C (14.2%). Use the exact formula when precision matters.
-11 Fahrenheit in other units
-23.89 °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
- -23.89 °C
- Degrees Réaumur
- -19.11 °Ré
- Degrees Delisle
- 185.83 °De
- Degrees Newton
- -7.88 °N
- Degrees Rømer
- -5.04 °Rø
- Kelvin
- 249.26 K
- Rankine
- 448.67 °R
-11 °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 -11 Fahrenheit in Celsius?
-11 degrees Fahrenheit is about -23.89 degrees Celsius (-11 °F ≈ -23.89 °C).
How do you convert -11 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (-11 − 32) × 5/9, °C = -43 × 5/9, °C = -23.888889.
How many degrees Fahrenheit is -23.89 °C?
-23.89 °C is about -11 degrees Fahrenheit.