Fahrenheit to Celsius

1 °F = -17.222222 °C. Type a figure below, or scan the table for the usual values.

Temperature · base unit K

Fahrenheit → Celsius

Type a number, a phrase like 11 stone to kg, or a compound like 5 ft 11 in.

18.333333°C

°C = °F × 0.55555556 − 17.777778offset scale

Precision

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Common pairs in temperature.

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32 categories, 300 units. Bare words follow UK usage: pint, gallon, mpg and ton are imperial; US versions are named.

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Fahrenheit to Celsius quick table

Fahrenheit (°F)Celsius (°C)
-40 °F-40 °C
0 °F-17.777778 °C
10 °F-12.222222 °C
20 °F-6.6666667 °C
32 °F0 °C
40 °F4.4444444 °C
50 °F10 °C
60 °F15.555556 °C
65 °F18.333333 °C
70 °F21.111111 °C
72 °F22.222222 °C
75 °F23.888889 °C
80 °F26.666667 °C
90 °F32.222222 °C
98.6 °F37 °C
100 °F37.777778 °C
212 °F100 °C

How to convert fahrenheit to celsius

Multiply the fahrenheit figure by 0.55555556, then subtract 17.777778. The two scales have different zero points, so there is no single factor to multiply by.

°C = °F × 0.55555556 − 17.777778

Example: 65 °F is 18.333333 °C.

Going the other way? Celsius to Fahrenheit

Questions

How many celsius in a fahrenheit?

1 °F is -17.222222 °C. Multiply the fahrenheit figure by 0.55555556, then subtract 17.777778. The two scales have different zero points, so there is no single factor to multiply by.

What is 65 °F in °C?

65 °F is 18.333333 °C. Type any other figure into the converter above to see it instantly, and the full list under it shows the same amount in every unit of the temperature category.

Is fahrenheit to celsius a simple multiplication?

Not quite: multiply by 0.55555556 and then subtract 17.777778, because the two scales start from different zero points.

Conversion guides

Formula, quick table and worked examples for the common ones.