-20 °F = -28.9 °C
-20 degrees Fahrenheit is -28.888889 degrees Celsius, to six decimal places.
- Precise
- -28.888889 °C
- Rounded
- -28.9 °C
- Formula
- (-20 − 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 -20 °F
Fahrenheit to Celsius for the whole numbers either side of -20, rounded to one decimal place. Each row opens its own page.
| Degrees Fahrenheit | Degrees Celsius |
|---|---|
| -25 °F | -31.7 °C |
| -24 °F | -31.1 °C |
| -23 °F | -30.6 °C |
| -22 °F | -30 °C |
| -21 °F | -29.4 °C |
| -20 °F | -28.9 °C |
| -19 °F | -28.3 °C |
| -18 °F | -27.8 °C |
| -17 °F | -27.2 °C |
| -16 °F | -26.7 °C |
| -15 °F | -26.1 °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 -20
Subtract 32: -20 − 32 = -52. Multiply by 5/9: -52 × 5 ÷ 9 = -28.888889. Rounded, that is -28.9 °C.
In your head
Take away 30 and halve it: 70 °F → 40 ÷ 2 = 20 °C (close enough for weather).
Questions
What is -20 °F in Celsius?
-20 degrees Fahrenheit is -28.888889 degrees Celsius to six decimal places, or -28.9 °C rounded to one decimal place.
How do you convert degrees Fahrenheit to degrees Celsius?
Use (-20 − 32) × 5/9, which gives -28.888889. For a quick estimate: Take away 30 and halve it: 70 °F → 40 ÷ 2 = 20 °C (close enough for weather).
Is -20 °F hot or cold?
-20 °F is -28.9 °C: bitterly cold, below the temperature of a home freezer.
What is -20 °C in Fahrenheit?
Going the other way, -20 °C is -4 °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 (-28.888889). The rounded figure, -28.9, is accurate enough for weather, cooking and thermometers.