Fahrenheit to Celsius

Type degrees Fahrenheit (°F), see degrees Celsius (°C).

By Akash Yadav Updated 30 October 2026

Type your number — degrees Fahrenheit (°F)

°F

Your answer — degrees Celsius (°C)

°C

Type a number above to see the answer.

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The formula

How to convert Fahrenheit to Celsius

To change degrees Fahrenheit into degrees Celsius: subtract 32, then divide by 1.8.

degrees Celsius = (degrees Fahrenheit − 32) ÷ 1.8

Going the other way: degrees Fahrenheit = degrees Celsius × 1.8 + 32

A reading of 1 degree Fahrenheit is -17.22222222 degrees Celsius, but a step of 1 degree Fahrenheit is 0.55555556 degrees Celsius — the two scales start counting from different places, which is why the formula shifts as well as scales. Both numbers in it are exact definitions, not rounded estimates.

Worked example

You have 98.6 degrees Fahrenheit. Subtract 32, then divide by 1.8. (98.6 − 32) ÷ 1.8 = 37 °C.

Common values

Fahrenheit to Celsius conversion table

Common degrees Fahrenheit to degrees Celsius values, rounded to 4 decimal places.
Degrees Fahrenheit (°F)	Degrees Celsius (°C)
-40 °F	-40 °C
0 °F	-17.7778 °C
32 °F	0 °C
40 °F	4.4444 °C
50 °F	10 °C
60 °F	15.5556 °C
68 °F	20 °C
70 °F	21.1111 °C
72 °F	22.2222 °C
75 °F	23.8889 °C
80 °F	26.6667 °C
90 °F	32.2222 °C
98.6 °F	37 °C
100 °F	37.7778 °C
212 °F	100 °C

Before you rely on it

Subtract first, then divide

The order is the whole trick. Take the 32 off first, then divide by 1.8. Dividing first and subtracting afterwards gives a different — and wrong — answer, and it is the most common mistake with this conversion.

The 32 is there because the scales disagree about where zero sits: water freezes at 32 °F and at 0 °C. The 1.8 is there because the degrees are different sizes — 180 Fahrenheit degrees cover the same span as 100 Celsius degrees.

For a difference rather than a reading, drop the 32 entirely. A 10 °F rise is a rise of about 5.6 °C, not −12.2 °C.

Body temperature is worth knowing as a sanity check: 98.6 °F is 37 °C. If a converter disagrees with that, something is wrong with it.

Common questions

Frequently asked questions

What is 0 °F in Celsius?

0 °F is about -17.8 °C, not 0 °C: the two scales start their zeroes 32 Fahrenheit degrees apart.

What is 1 °F in Celsius?

1 °F is about -17.2 °C. Near freezing the Fahrenheit figures run well ahead of the Celsius ones, which is why a forecast of "1 °F" is deep cold rather than mild.

How do you convert Fahrenheit to Celsius?

Subtract 32, then divide by 1.8 — that is the whole formula, worked through above. For a temperature change rather than a reading, divide by 1.8 alone: the 32 only lines up the zeroes, so it does not belong in a difference.

What is −5 °F in Celsius?

−5 °F is about -20.6 °C — a hard winter freeze.

What is 60 °F in Celsius?

60 °F is 15.6 °C — a cool day.

What is 68 °F in Celsius?

68 °F is 20 °C — a mild room temperature.

What is 70 °F in Celsius?

70 °F is 21.1 °C.

What is 72 °F in Celsius?

72 °F, a common thermostat setting, is about 22.2 °C.

What is 75 °F in Celsius?

75 °F is 23.9 °C — a warm room.

What is 80 °F in Celsius?

80 °F is 26.7 °C — a warm day.

What is 90 °F in Celsius?

90 °F is 32.2 °C — a hot day.

What is 98.6 °F in Celsius?

98.6 °F is exactly 37 °C, the figure usually quoted for normal body temperature.

What is 100 degrees Fahrenheit in Celsius?

100 °F is 37.8 °C — a hot day, and slightly above body temperature.

What is 212 °F in Celsius?

212 °F is 100 °C — the boiling point of water at sea level.

Why do I subtract 32 before dividing?

Because the two scales start from different zeroes. Removing the 32 lines the scales up first; dividing before subtracting applies the scaling to the wrong number and the answer comes out wrong.

Keep going

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Every factor on this page is listed in our conversion methodology.