Degrees Fahrenheit to Degrees Celsius Converter
Convert degrees Fahrenheit to degrees Celsius using °C = (°F - 32) × 5/9. The formula is °C = (°F - 32) × 5/9; 1 °F is -17.22 °C.
A temperature scale commonly used in the United States.
A temperature scale where water freezes at 0 °C and boils at 100 °C.
Start with your value in degrees Fahrenheit, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
Use the converted temperature for weather, cooking, lab notes, thermostats, and thermal references, but remember that context such as pressure can affect boiling and freezing points.
The formula stays visible because multiplying by a factor alone is not enough when the scale has a shifted zero point. This page displays converted values with up to 2 decimal places by default.
| Degrees Fahrenheit | Degrees Celsius |
|---|---|
| -40 °F | -40 °C |
| 32 °F | 0 °C |
| 68 °F | 20 °C |
| 98.6 °F | 37 °C |
| 212 °F | 100 °C |
Useful for comparing weather and outdoor temperatures. Use the same formula with your exact input if the measurement needs to be documented.
Useful for cooking, appliance, and HVAC settings. Use the same formula with your exact input if the measurement needs to be documented.
Useful for science lab and engineering references. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert degrees Fahrenheit to degrees Celsius?
Enter the value in degrees Fahrenheit and apply °C = (°F - 32) × 5/9. Round the degrees Celsius result after the conversion, not before.
What is 1 degree Fahrenheit in degrees Celsius?
1 °F equals -17.22 °C with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is -40 °F in °C?
-40 °F is -40 °C. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert degrees Celsius back to degrees Fahrenheit?
Yes. Use the reverse Degrees Celsius to Degrees Fahrenheit converter if you need to go the other direction.
How accurate is this degrees Fahrenheit to degrees Celsius conversion?
The calculator runs the formula in your browser and rounds results to 2 decimal places by default. The formula stays visible because multiplying by a factor alone is not enough when the scale has a shifted zero point.