What is the formula to convert Fahrenheit to Celsius?

Subtract 32 from the Fahrenheit temperature, then multiply by 5/9 (or divide by 1.8). Formula: °C = (°F - 32) ÷ 1.8

100°F (37.8°C) is considered a low-grade fever. Normal body temperature is around 98.6°F (37°C). A fever is generally considered 100.4°F (38°C) or higher.

Why does the US use Fahrenheit?

The Fahrenheit scale was developed by Daniel Gabriel Fahrenheit in 1724 and was widely adopted in English-speaking countries. The US retained this system while most other countries switched to Celsius.

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Fahrenheit to Celsius Converter

Convert Fahrenheit to Celsius instantly. Free online °F to °C temperature converter with accurate results.

Reverse: °C → °F

Convert Fahrenheit to Celsius instantly. Free online °F to °C temperature converter with accurate results.

Common Conversions

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About Fahrenheit to Celsius Conversion

Our free Fahrenheit to Celsius converter helps you quickly convert temperatures from imperial (Fahrenheit) to metric (Celsius) measurements. Essential for understanding international weather forecasts, cooking with metric recipes, and scientific applications.

Conversion Formula

To convert Fahrenheit to Celsius: °C = (°F - 32) × 5/9

Key Reference Points

Water freezes: 32°F = 0°C
Water boils: 212°F = 100°C
Body temperature: 98.6°F = 37°C
Room temperature: 68°F = 20°C

Fahrenheit to Celsius Converter

Conversion Formula

Key Reference Points

Frequently Asked Questions

What is the formula to convert Fahrenheit to Celsius?

Is 100°F a fever?

Why does the US use Fahrenheit?