30 °F = -1.1 °C
30 degrees Fahrenheit is -1.111111 degrees Celsius, to six decimal places.
- Precise
- -1.111111 °C
- Rounded
- -1.1 °C
- Formula
- (30 − 32) × 5/9
Convert any other temperature
Type in either box; the other follows, and the scale moves with it. Works for decimals and, for temperatures, numbers below zero.
Around 30 °F
Fahrenheit to Celsius for the whole numbers either side of 30, rounded to one decimal place. Each row opens its own page.
| Degrees Fahrenheit | Degrees Celsius |
|---|---|
| 25 °F | -3.9 °C |
| 26 °F | -3.3 °C |
| 27 °F | -2.8 °C |
| 28 °F | -2.2 °C |
| 29 °F | -1.7 °C |
| 30 °F | -1.1 °C |
| 31 °F | -0.6 °C |
| 32 °F | 0 °C |
| 33 °F | 0.6 °C |
| 34 °F | 1.1 °C |
| 35 °F | 1.7 °C |
How to convert Fahrenheit to Celsius
The formula
°C = (°F − 32) × 5/9. The two scales start from different zero points, so there is a subtraction as well as a multiplication.
Worked through for 30
Subtract 32: 30 − 32 = -2. Multiply by 5/9: -2 × 5 ÷ 9 = -1.111111. Rounded, that is -1.1 °C.
In your head
Take away 30 and halve it: 70 °F → 40 ÷ 2 = 20 °C (close enough for weather).
Questions
What is 30 °F in Celsius?
30 degrees Fahrenheit is -1.111111 degrees Celsius to six decimal places, or -1.1 °C rounded to one decimal place.
How do you convert degrees Fahrenheit to degrees Celsius?
Use (30 − 32) × 5/9, which gives -1.111111. For a quick estimate: Take away 30 and halve it: 70 °F → 40 ÷ 2 = 20 °C (close enough for weather).
Is 30 °F hot or cold?
30 °F is -1.1 °C: below freezing; water turns to ice.
What is 30 °C in Fahrenheit?
Going the other way, 30 °C is 86 °F. The reverse conversion has its own page and converter.
Is the answer exact?
The exact answer has endless decimals, so it is shown to six places (-1.111111). The rounded figure, -1.1, is accurate enough for weather, cooking and thermometers.