Converters

Fahrenheit to Celsius Converter

Convert Fahrenheit to Celsius instantly. Enter any °F temperature and see the exact °C result.

Enter a value above to see the conversion.

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Fahrenheit to Celsius Formula

The conversion from fahrenheit to celsius uses a fixed mathematical relationship.

°C = (°F − 32) × 5 / 9

Example: 98.6°F → (98.6 − 32) × 5/9 = 37°C

About the Fahrenheit to Celsius Conversion

Fahrenheit and Celsius are the two most common temperature scales in everyday life. The United States uses Fahrenheit for weather, cooking, and body temperature, while most of the world uses Celsius. When traveling, following international recipes, or reading global weather forecasts, this conversion is essential.

The formula °C = (°F − 32) × 5/9 reflects two differences between the scales: an offset of 32 (water freezes at 32°F but 0°C) and a scaling factor of 5/9 (180 Fahrenheit degrees span the same range as 100 Celsius degrees between freezing and boiling points of water).

Frequently asked questions

What is the formula to convert Fahrenheit to Celsius?
The formula is °C = (°F − 32) × 5/9. Subtract 32 from the Fahrenheit value first, then multiply the result by five-ninths. For example, 32°F − 32 = 0, and 0 × 5/9 = 0°C — the freezing point of water at standard pressure.
What is 98.6°F in Celsius?
98.6°F equals exactly 37°C, which is average human body temperature. This is one of the most commonly referenced Fahrenheit-to-Celsius conversions in medicine, healthcare, and everyday life across countries that use the Celsius scale.
What temperature is the same in both Fahrenheit and Celsius?
The two scales converge at −40 degrees — that is, −40°F equals exactly −40°C. You can verify this by solving the equation °C = °F, giving (F − 32) × 5/9 = F, which simplifies to the unique solution F = −40.
Is 72°F hot or cold in Celsius?
72°F equals approximately 22.2°C, which is considered a comfortable room temperature by most people. Indoor comfort ranges typically fall between 20°C and 24°C (68°F to 75°F) for residential and office environments worldwide.
Why do the US and most of the world use different temperature scales?
The United States retained Fahrenheit — established in 1724 by Daniel Gabriel Fahrenheit — when most countries adopted Celsius during the global metrication movement of the 20th century. Both scales are scientifically valid; cultural inertia is the main reason the US continues using Fahrenheit.

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