Convert °F to °C — Free Fahrenheit to Celsius Calculator
Convert Fahrenheit to Celsius instantly. Enter any value and get the exact conversion with the formula displayed. Accurate to 4 decimal places.
Last updated: January 2026
Fahrenheit to Celsius Converter
The Fahrenheit to Celsius conversion formula
To convert Fahrenheit to Celsius, subtract 32, then multiply by 5/9. The formula is:
For example: 68 °F = 20 °C. This formula works for any value you enter in the calculator above.
Common °F to °C conversions
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 32 | 0 |
| 50 | 10 |
| 68 | 20 |
| 77 | 25 |
| 86 | 30 |
| 98.6 | 37 |
| 100 | 37.7778 |
| 212 | 100 |
Use the converter above to calculate any custom value. The result updates instantly as you type.
Why both Fahrenheit and Celsius are used
Celsius is the standard temperature scale used in almost every country worldwide, part of the metric (SI) system. Fahrenheit is primarily used in the United States and a few other territories. The Celsius scale sets 0° at the freezing point of water and 100° at boiling, making it intuitive for scientific work. The Fahrenheit scale sets 32° and 212° for the same points, offering finer granularity — 180 divisions between freezing and boiling vs 100 for Celsius. Understanding both is essential for travel, cooking, weather, and scientific communication.
How to use this converter
Simply type a value in either field — the converter instantly calculates the equivalent in the other unit. The conversion formula is shown below the inputs so you can see exactly how the result was calculated. Use the conversion table for quick reference of common values.
Need more conversions? Try the full unit converter which supports multiple categories of units all in one page.
Frequently asked questions about °F to °C conversion
How do I convert Fahrenheit to Celsius?
To convert Fahrenheit to Celsius, subtract 32, then multiply by 5/9. For example, 32 °F × (5/9) × (F - 32) = 0 °C.
What is the formula to convert Fahrenheit to Celsius?
The formula to convert Fahrenheit to Celsius is: °C = (°F - 32) × 5/9. For example, 77°F = (77 - 32) × 5/9 = 25°C.
What is the difference between Fahrenheit and Celsius?
Celsius and Fahrenheit are two different temperature scales. Water freezes at 0°C (32°F) and boils at 100°C (212°F). Celsius is used in most countries worldwide, while Fahrenheit is primarily used in the United States. One degree Celsius is equivalent to 1.8 degrees Fahrenheit.
Common °F to °C conversions
Common conversions include: 32 °F = 0.00 °C, 50 °F = 10.00 °C, 68 °F = 20.00 °C, 77 °F = 25.00 °C, 86 °F = 30.00 °C, 98.6 °F = 37.00 °C, 100 °F = 37.78 °C, 212 °F = 100.00 °C. Use the calculator above for any value.