Fahrenheit to Celsius Converter (°F to °C)

Use this free online Fahrenheit to Celsius converter to quickly convert °F to °C. Simply enter the temperature in Fahrenheit, and the tool will instantly display the equivalent in Celsius.

How to Convert Fahrenheit to Celsius

Unlike most unit conversions, Fahrenheit to Celsius is not a simple multiplication — it involves both an offset and scaling, since the two scales have different zero points.

Formula: °C = (°F − 32) × 5/9

Example: Convert 77°F to °C. (77 − 32) × 5/9 = 45 × 5/9 = 25°C So, 77°F is equal to 25°C.

What is Fahrenheit?

Fahrenheit (°F) is a temperature scale where water freezes at 32°F and boils at 212°F. It is primarily used in the United States and a few surrounding territories for everyday temperature measurements, including weather forecasts.

What is Celsius?

Celsius (°C), also known as centigrade, is a temperature scale where water freezes at 0°C and boils at 100°C at standard atmospheric pressure. It is the standard temperature unit used in most countries around the world.

Fahrenheit to Celsius Relationship

°C = (°F − 32) × 5/9 °F = (°C × 9/5) + 32

Both scales meet at exactly −40 degrees, where −40°F equals −40°C.

°F to °C Conversion Table

Fahrenheit (°F)	Celsius (°C)
32°F	0°C
50°F	10°C
68°F	20°C
77°F	25°C
86°F	30°C
98.6°F	37°C
212°F	100°C

Solved Examples

Example 1: Convert 59°F to °C. (59 − 32) × 5/9 = 27 × 5/9 = 15°C

Example 2: Convert 104°F to °C. (104 − 32) × 5/9 = 72 × 5/9 = 40°C

Example 3: What is normal human body temperature in °C? 98.6°F converts to 37°C, the commonly cited normal body temperature.

Frequently Asked Questions