-30 Fahrenheit to Celsius
-30 °F ≈ -34.44 °C
-30 degrees Fahrenheit is approximately -34.44 degrees Celsius.
How to convert -30 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (-30 − 32) × 5/9°C = -62 × 5/9°C = -34.444444
So -30 °F = -34.444444 °C, or about -34.44 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -34 °C
- Rounded to one decimal place: -34.4 °C
Quick mental estimate: subtract 30 and halve it. For -30 °F that gives about -30 °C — off by 4.44 °C (12.9%). Use the exact formula when precision matters.
-30 Fahrenheit in other units
-34.44 °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
- -34.44 °C
- Degrees Réaumur
- -27.56 °Ré
- Degrees Delisle
- 201.67 °De
- Degrees Newton
- -11.37 °N
- Degrees Rømer
- -10.58 °Rø
- Kelvin
- 238.71 K
- Rankine
- 429.67 °R
-30 °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 -30 Fahrenheit in Celsius?
-30 degrees Fahrenheit is about -34.44 degrees Celsius (-30 °F ≈ -34.44 °C).
How do you convert -30 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (-30 − 32) × 5/9, °C = -62 × 5/9, °C = -34.444444.
How many degrees Fahrenheit is -34.44 °C?
-34.44 °C is about -29.99 degrees Fahrenheit.