Fahrenheit to Celsius Converter
Convert fahrenheit to celsius instantly. Exact formula shown with the result.
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Convert fahrenheit to celsius
This pair converts by formula, not a single factor. Type any value and the result updates instantly; the math is shown beneath the board.
Worked by hand
Temperature conversions pivot through Celsius: rescale the degrees, then shift the zero point.
Worked example
- Take 98.6 °F
- apply the formula shown above the fold
- the result is 37 °C
How to use it
- Enter your fahrenheit
- Read the celsius result
- Check the factor line to verify by hand
Frequently asked questions
How many celsius are in one fahrenheit?
Temperature scales offset, so the answer depends on the value; use the formula shown in the result.
How do I convert celsius back to fahrenheit?
Run the formula in reverse.
Is this rounding or exact?
The factor is exact; only the displayed decimals are rounded.