Fahrenheit to Celsius Converter Formula

Understand the math behind the fahrenheit to celsius converter. Each variable explained with a worked example.

Use the Fahrenheit to Celsius Converter

Formulas Used

Celsius

celsius = (fahrenheit - 32) * 5/9

Variables

VariableDescriptionDefault
fahrenheitFahrenheit(°F)72

How It Works

How to Convert Fahrenheit to Celsius

Formula

°C = (°F - 32) × 5/9

Subtract 32 from the Fahrenheit temperature, then multiply by 5/9 to get the Celsius equivalent.

Worked Example

Convert 72°F to Celsius.

fahrenheit = 72
  1. 01°C = (72 - 32) × 5/9
  2. 02°C = 40 × 0.5556
  3. 03°C = 22.22°C

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