Fahrenheit to Celsius Converter
Enter a temperature in Fahrenheit (°F) to calculate its equivalent in Celsius (°C).
The result shows the Celsius equivalent of the Fahrenheit value you entered.
How to read the result
The result shows the Celsius equivalent of the Fahrenheit value you entered.
How do you convert Fahrenheit to Celsius?
Celsius = (Fahrenheit − 32) × 5 ÷ 9.
Formula
- 32 is subtracted from the Fahrenheit value.
- The result is multiplied by 5 and divided by 9.
- The resulting value is the temperature in Celsius.
Example Fahrenheit-to-Celsius conversion
68°F equals 20°C, calculated as (68-32) × 5 ÷ 9.
Things to keep in mind
- This conversion isn't a simple multiplier — it includes both an offset and scaling.
- 32°F equals exactly 0°C, and 212°F equals exactly 100°C.
Comparisons
Values around 32°F correspond to around 0°C.
Based on the freezing point of water.
64-77°F corresponds to roughly 18-25°C.
The most common range encountered in daily life.
Values around 212°F correspond to around 100°C.
Based on the boiling point of water at sea level.
Fahrenheit-to-Celsius conversion guide
Fahrenheit and Celsius are two different scales used to measure temperature. This tool instantly converts a Fahrenheit value, common in the US, into its Celsius equivalent.
The conversion includes both an offset and a scale factor: Celsius = (Fahrenheit − 32) × 5/9. For example, for 68°F: 68 − 32 = 36, then 36 × 5/9 = 20°C.
This tool is useful for converting US-based weather reports, body temperature readings, or oven temperatures into the metric system.
The two scales have different zero points: 32°F corresponds to 0°C, while -40 degrees gives the same value on both scales — the single point where the two scales intersect.
Results are a mathematical conversion and are shown to one decimal place.
FAQ
How do you convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, then multiply the result by 5/9. For example, (68-32) × 5/9 = 20°C.
What is 32°F in Celsius?
32°F, the freezing point of water, equals exactly 0°C.
What is 212°F in Celsius?
212°F, the boiling point of water at sea level, equals exactly 100°C.
Why does the formula have both subtraction and multiplication?
Because the Fahrenheit and Celsius scales start from different zero points; the offset (32) is subtracted first, then the scale difference (5/9) is applied.
Can negative Fahrenheit values be entered?
Yes, negative values can be entered and converted correctly.
What is this converter used for?
Converting US-based weather, body temperature, or oven temperature figures into Celsius.
Can I enter decimal Fahrenheit values?
Yes, decimal values such as 98.6 can be entered.
How do I convert Celsius to Fahrenheit instead?
Use our separate 'Celsius to Fahrenheit Converter' tool.
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