Unit Converters

Fahrenheit to Celsius Converter

Type a value in fahrenheit to get it in celsius, and see the reverse conversion.

By TheCalcTools Updated Formula checked and tested

Your numbers

Your results

Converted value
Celsius (°C)
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1 °F in °C
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Your number read as °C, in °F
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Fahrenheit to Celsius Converter by TheCalcTools

How the Fahrenheit to Celsius Converter works

Subtract 32 and multiply by 5/9 to convert Fahrenheit to Celsius. US weather and oven settings use Fahrenheit.

To convert fahrenheit to celsius, subtract 32 and multiply by 5/9. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.

Quick estimate in your head: subtract 30 and halve it (80 °F → 25 °C; exact 26.7 °C).

The formula

°C = (°F − 32) × 5/9°F = °C × 9/5 + 32

Worked example

Using the default values shown in the calculator:

Value in fahrenheit (°F)98.6
  1. (98.6 °F − 32) × 5/9 = 37 °C.

Result:

Celsius (°C)37
1 °F in °C-17.2222
Your number read as °C, in °F209.48

Conversion table

°F°C
-40 °F-40 °C
0 °F-17.7778 °C
32 °F0 °C
50 °F10 °C
68 °F20 °C
72 °F22.2222 °C
98.6 °F37 °C
100 °F37.7778 °C
212 °F100 °C
350 °F176.667 °C

Frequently asked questions

What is 1 degree Fahrenheit in celsius?

1 degree Fahrenheit (°F) equals -17.2222 °C.

Is 100 °F a fever?

Yes, 100 °F is 37.8 °C, a low-grade fever in adults.

Sources and further reading

Celsius to Fahrenheit ConverterType a value in celsius to get it in fahrenheit, and see the reverse conversion Temperature ConverterEnter a temperature in any scale and see the other three Heat Index CalculatorHow hot it feels when humidity is added Celsius to Kelvin ConverterType a value in celsius to get it in kelvin, and see the reverse conversion

More in Unit Converters · All calculators

This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.