🌡️ Temperature Converter

Fahrenheit to Celsius
( °F → °C )

Instantly convert Fahrenheit to Celsius. Enter any value below and get an accurate result with the full formula and reference table.

Converter Tool
°F
°C
Result
32°F = 0°C
0
°C
The Formula
°C = (°F – 32) × 5/9
Subtract 32, then multiply by 5/9.

How to Convert Fahrenheit to Celsius

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature, then multiply by 5/9 (or 0.5556). This is the standard formula for temperature conversion between these two scales.

Step-by-Step Example

Let’s convert 68°F to Celsius:

1. Subtract 32: 68 – 32 = 36
2. Multiply by 5/9: 36 × 5/9 = 20
3. So 68°F equals 20°C.

Another common example: 212°F (boiling point of water) → (212 – 32) × 5/9 = 180 × 5/9 = 100°C.

Note on Absolute Zero

Absolute zero in Fahrenheit is -459.67°F, which corresponds to -273.15°C.

When You’d Use Each Unit

Fahrenheit is primarily used in the United States for weather, cooking, and body temperature. Celsius is used in most other countries and in science. Converting between them is essential for travel, science, and international communication.

Conversion Table

Common Fahrenheit values converted to Celsius — typical values highlighted.

Fahrenheit (°F) Celsius (°C) Approximate
Frequently Asked Questions
How do I convert Fahrenheit to Celsius quickly? +
Subtract 30, then divide by 2 for a rough estimate. Exact formula: °C = (°F – 32) × 5/9.
What is 32°F in Celsius? +
32°F = 0°C.
What is 212°F in Celsius? +
212°F = 100°C.
What is -40°F in Celsius? +
-40°F = -40°C.
What is 98.6°F in Celsius? +
98.6°F = 37°C (normal human body temperature).
Can I convert Celsius back to Fahrenheit with this tool? +
Yes! Just type a value into the Celsius field and the Fahrenheit field updates automatically. Or use the ⇄ swap button to switch directions.
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