20 Fahrenheit to Celsius
20 °F ≈ -6.67 °C
20 degrees Fahrenheit is approximately -6.67 degrees Celsius.
How to convert 20 °F to °C
Use the formula °C = (°F − 32) × 5/9:
°C = (20 − 32) × 5/9°C = -12 × 5/9°C = -6.666667
So 20 °F = -6.666667 °C, or about -6.67 °C rounded.
Rounded values and quick estimate
- Rounded to a whole number: -7 °C
- Rounded to one decimal place: -6.7 °C
Quick mental estimate: subtract 30 and halve it. For 20 °F that gives about -5 °C — off by 1.67 °C (25%). Use the exact formula when precision matters.
20 Fahrenheit in other units
-6.67 °C is below the freezing point of water (0 °C / 32 °F), so expect ice and frost. In weather terms it is a cold winter day.
- Celsius
- -6.67 °C
- Degrees Réaumur
- -5.33 °Ré
- Degrees Delisle
- 160 °De
- Degrees Newton
- -2.2 °N
- Degrees Rømer
- 4 °Rø
- Kelvin
- 266.48 K
- Rankine
- 479.67 °R
20 °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 20 Fahrenheit in Celsius?
20 degrees Fahrenheit is about -6.67 degrees Celsius (20 °F ≈ -6.67 °C).
How do you convert 20 °F to °C?
Apply °C = (°F − 32) × 5/9: °C = (20 − 32) × 5/9, °C = -12 × 5/9, °C = -6.666667.
How many degrees Fahrenheit is -6.67 °C?
-6.67 °C is about 19.99 degrees Fahrenheit.