11 Fahrenheit to Celsius
11 °F ≈ -11.67 °C
11 degrees Fahrenheit is approximately -11.67 degrees Celsius.
How to convert 11 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (11 − 32) × 5/9°C = -21 × 5/9°C = -11.666667
So 11 °F = -11.666667 °C, or about -11.67 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -12 °C
- Rounded to one decimal place: -11.7 °C
Quick mental estimate: subtract 30 and halve it. For 11 °F that gives about -9.5 °C — off by 2.17 °C (18.6%). Use the exact formula when precision matters.
11 Fahrenheit in other units
-11.67 °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
- -11.67 °C
- Degrees Réaumur
- -9.33 °Ré
- Degrees Delisle
- 167.5 °De
- Degrees Newton
- -3.85 °N
- Degrees Rømer
- 1.38 °Rø
- Kelvin
- 261.48 K
- Rankine
- 470.67 °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 -11.67 degrees Celsius (11 °F ≈ -11.67 °C).
How do you convert 11 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (11 − 32) × 5/9, °C = -21 × 5/9, °C = -11.666667.
How many degrees Fahrenheit is -11.67 °C?
-11.67 °C is about 10.99 degrees Fahrenheit.