How do you convert Fahrenheit to Celsius?

Temperature scales differ by both scale and offset, so you apply a formula rather than a single factor. For example, 1 Fahrenheit equals -17.2222 Celsius. Enter a value in the converter above for an instant result.

How many Celsius are in a Fahrenheit?

There are -17.2222 Celsius in one Fahrenheit.

What is 10 Fahrenheit in Celsius?

10 Fahrenheit is equal to -12.2222 Celsius.

How do you convert Celsius back to Fahrenheit?

Apply the inverse temperature formula. One Celsius equals 33.8 Fahrenheit.

Fahrenheit to Celsius Converter (°F to °C)

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Result updates as you type

Recent: 1 Fahrenheit = -17.2222 Celsius

Formula

To convert Fahrenheit to Celsius, subtract 32, then multiply by 5/9.

°C = (°F − 32) × 5/9

For a quick mental estimate, subtract 30 and halve (for example, 70°F ≈ 20°C). The exact formula is °C = (°F − 32) × 5/9.

Worked examples

1 Fahrenheit = -17.2222 Celsius
5 Fahrenheit = -15 Celsius
10 Fahrenheit = -12.2222 Celsius
100 Fahrenheit = 37.7778 Celsius

Fahrenheit to Celsius table

Fahrenheit (°F)	Celsius (°C)
1	-17.2222
2	-16.6667
3	-16.1111
4	-15.5556
5	-15
10	-12.2222
25	-3.8889
50	10
100	37.7778
250	121.1111
500	260
1000	537.7778

About Fahrenheit and Celsius

Both the Fahrenheit (°F) and the Celsius (°C) measure temperature. Because temperature scales have different zero points, converting between them requires both a scale factor and an offset rather than a single multiplication. Enter any value above to convert instantly, or use the formula and reference table below.

Unit definitions

Fahrenheit (°F): The Fahrenheit (°F) is a unit of temperature. On the Fahrenheit scale water freezes at 32° and boils at 212° at standard pressure.
Celsius (°C): The Celsius (°C) is a unit of temperature. On the Celsius scale water freezes at 0° and boils at 100° at standard pressure.

Frequently asked questions

How do you convert Fahrenheit to Celsius?: Temperature scales differ by both scale and offset, so you apply a formula rather than a single factor. For example, 1 Fahrenheit equals -17.2222 Celsius. Enter a value in the converter above for an instant result.
How many Celsius are in a Fahrenheit?: There are -17.2222 Celsius in one Fahrenheit.
What is 10 Fahrenheit in Celsius?: 10 Fahrenheit is equal to -12.2222 Celsius.
How do you convert Celsius back to Fahrenheit?: Apply the inverse temperature formula. One Celsius equals 33.8 Fahrenheit.

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Fahrenheit to Celsius Converter