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Fahrenheit to Celsius: The Ultimate Guide to Temperature Conversion

Published on August 25, 2025 by Munshi

Understanding how to convert Fahrenheit to Celsius (F to C) and Celsius to Fahrenheit (C to F) is an essential skill. Whether you're interpreting a weather report, adjusting a recipe, or checking for a fever, this guide will provide you with the exact temperature conversion formula you need to get an accurate result every time.

How to Convert Fahrenheit to Celsius

This is the most common temperature conversion for those accustomed to the Imperial system. The process involves two simple steps: first subtract 32, then multiply by 5/9.

The Formula:
Celsius = (Fahrenheit - 32) × 5/9

Step-by-Step Example: Convert 68°F to Celsius

  1. Subtract 32 from the Fahrenheit value:
    68 - 32 = 36

  2. Multiply the result by 5/9:
    36 × (5/9) = 20
    So, 68°F is equal to 20°C. This is a common room temperature.

Internal Link: For an instant calculation, use our free Fahrenheit to Celsius Converter.

How to Convert Celsius to Fahrenheit

To convert in the other direction, you simply reverse the process: multiply by 9/5, then add 32.

The Formula:
Fahrenheit = (Celsius × 9/5) + 32

Step-by-Step Example: Convert 37°C to Fahrenheit

  1. Multiply the Celsius value by 9/5:
    37 × (9/5) = 66.6

  2. Add 32 to the result:
    66.6 + 32 = 98.6
    So, 37°C is equal to 98.6°F, which is the standard human body temperature.

Key Temperature Benchmarks

Description Fahrenheit (°F) Celsius (°C)
Water Freezes 32°F 0°C
Room Temperature 68-72°F 20-22°C
Body Temperature 98.6°F 37°C
Water Boils 212°F 100°C

Internal Link: For a quick reference of many more values, check out our Fahrenheit to Celsius Conversion Chart.