Fahrenheit to Celsius Formula

Unit Converters Formula • Published on July 30, 2026 • Last updated July 30, 2026

Mathematical Equation

$$°C = (°F - 32) \times 5/9$$

Variable Definitions

°F

Temperature in degrees Fahrenheit

°C

Temperature in degrees Celsius

Detailed Explanation

In-Depth Guide

To convert Fahrenheit (°F) to Celsius (°C), subtract 32 from the Fahrenheit temperature and then multiply by 5/9 (or divide by 1.8).

How to Calculate: Step-by-Step

1. Take the temperature reading in Fahrenheit (°F). 2. Subtract 32 from the Fahrenheit value. 3. Multiply the remaining value by 5/9 (or divide by 1.8) to get Celsius (°C).

Worked Calculation Example

Convert 98.6°F (standard human body temperature) to Celsius: - Step 1: 98.6 - 32 = 66.6 - Step 2: 66.6 ÷ 1.8 = 37°C. Result: 98.6°F is equal to 37°C.

Common Use Cases

  • Body fever monitoring
  • Oven temperature conversions for recipes
  • Scientific research

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