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Fahrenheit to Celsius

Convert temperatures from Fahrenheit (°F) to Celsius (°C).

Enter inputs on the left to see results.
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How to Calculate & Use the Fahrenheit to Celsius

Convert temperatures from Fahrenheit to Celsius instantly with our free online converter. Input your temperature in degrees Fahrenheit (°F) to calculate the equivalent value in Celsius (°C). Our tool explains the math behind the conversion and provides reference charts for quick checks.

Input & Variable Breakdown:

  • Fahrenheit (°F): Bounded variable used in the formulas.

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Frequently Asked Questions

What is the formula to convert Fahrenheit to Celsius?

The formula to convert Fahrenheit to Celsius is: Celsius = (Fahrenheit - 32) * 5/9.

What is the quick way to estimate F to C in my head?

Subtract 30 from the Fahrenheit temperature and divide the result by 2. For example, 80°F - 30 = 50 / 2 = 25°C (exact is 26.67°C).

What is normal human body temperature in Celsius?

Normal human body temperature is typically defined as 98.6°F, which is equal to 37°C.