Convert Fahrenheit to Celsius
1 Fahrenheit (°F) = -17.2222 Celsius (°C). Use the free converter below to instantly convert any fahrenheit value to celsius, or view the full conversion table and formula.
1 °F = -17.2222 °C
Fahrenheit to Celsius Conversion Table
How to Convert Fahrenheit to Celsius
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9 (or divide by 1.8). For example, 98.6°F: (98.6 − 32) × 5/9 = 66.6 × 0.5556 = 37°C.
Worked Example: Convert 40 °F to °C
Start with the value in fahrenheit
40 °F
Apply the formula
°C = (40 − 32) × 5/9
Calculate the result
40 °F = 4.44 °C
Fahrenheit to Celsius Examples
-40 °F is equal to -40 °C. Using the formula (°F − 32) × 5/9, -40 °F converts to -40 °C.
0 °F is equal to -17.78 °C. Using the formula (°F − 32) × 5/9, 0 °F converts to -17.78 °C.
32 °F is equal to 0 °C. Using the formula (°F − 32) × 5/9, 32 °F converts to 0 °C.
40 °F is equal to 4.44 °C. Using the formula (°F − 32) × 5/9, 40 °F converts to 4.44 °C.
50 °F is equal to 10 °C. Using the formula (°F − 32) × 5/9, 50 °F converts to 10 °C.
60 °F is equal to 15.56 °C. Using the formula (°F − 32) × 5/9, 60 °F converts to 15.56 °C.
68 °F is equal to 20 °C. Using the formula (°F − 32) × 5/9, 68 °F converts to 20 °C.
72 °F is equal to 22.22 °C. Using the formula (°F − 32) × 5/9, 72 °F converts to 22.22 °C.
Converting Celsius to Fahrenheit
Need the reverse conversion? Use the table below for a quick reference converting celsius back to fahrenheit.
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -20 | -4 |
| -10 | 14 |
| 0 | 32 |
| 5 | 41 |
| 10 | 50 |
Fahrenheit to Celsius FAQ
What is 72°F in Celsius?
72°F equals approximately 22.22°C. This is a common comfortable room temperature.
What is the boiling point of water in both scales?
Water boils at 100°C or 212°F at standard atmospheric pressure.
Understanding Fahrenheit and Celsius
What is a Fahrenheit (°F)?
The fahrenheit (°F) is a unit of temperature in the imperial system. It is commonly abbreviated as °F and relates to celsius by a factor of -17.2222.
What is a Celsius (°C)?
The celsius (°C) is a unit of temperature in the metric system. It is commonly abbreviated as °C and relates to fahrenheit by a factor of 33.8.