Fahrenheit to Celsius Converter
Convert Fahrenheit (°F) to Celsius (°C) instantly. Free online temperature converter with conversion table and formula.
Why Convert Temperature from Fahrenheit to Celsius?
The Celsius scale (°C) is the most widely used temperature scale globally, used by the vast majority of countries for weather forecasts, cooking, and scientific measurements. Converting Fahrenheit to Celsius is essential when communicating internationally or following recipes and guidelines from most countries outside the US.
Whether you're traveling abroad, working with international colleagues, or using metric-based scientific equipment, understanding Fahrenheit to Celsius conversion is invaluable.
What is Fahrenheit?
The Fahrenheit scale (°F) is a temperature scale used primarily in the United States and some Caribbean nations. It was proposed by physicist Daniel Gabriel Fahrenheit in 1724.
- Water freezes at 32°F
- Water boils at 212°F (at standard atmospheric pressure)
- Normal human body temperature is approximately 98.6°F
- The scale has 180 degrees between freezing and boiling points of water
What is Celsius?
The Celsius scale (°C), also known as centigrade, is the standard temperature scale used in most of the world. It is part of the International System of Units (SI).
- Water freezes at 0°C
- Water boils at 100°C (at standard atmospheric pressure)
- Normal human body temperature is approximately 37°C
- Named after Swedish astronomer Anders Celsius
Fahrenheit to Celsius Conversion Formula
To convert Fahrenheit to Celsius, use the following formula:
Or equivalently:
Conversion Table: Fahrenheit to Celsius
Here is a quick reference table for common Fahrenheit to Celsius conversions:
| Fahrenheit (°F) | Celsius (°C) | Description |
|---|---|---|
| -40°F | -40.0°C | Extreme cold (same in both scales) |
| 0°F | -17.8°C | Very cold winter day |
| 32°F | 0.0°C | Water freezing point |
| 50°F | 10.0°C | Cool day |
| 68°F | 20.0°C | Room temperature |
| 77°F | 25.0°C | Comfortable warm day |
| 86°F | 30.0°C | Hot summer day |
| 98.6°F | 37.0°C | Human body temperature |
| 104°F | 40.0°C | Very hot day / fever |
| 122°F | 50.0°C | Extremely hot |
| 212°F | 100.0°C | Water boiling point |
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Convert Fahrenheit to Celsius instantly. To do it by hand, subtract 32, then multiply by 5/9 — so 98.6°F = 37°C. Fahrenheit is used mainly in the United States; Celsius is the metric scale used across most of the world and in science.
How do I convert Fahrenheit to Celsius?
- Enter the temperature in Fahrenheit.
- The Celsius value appears automatically.
- Use it for weather, recipes, or medical readings.
What is the F to C formula?
°C = (°F − 32) × 5/9
Quick estimate: subtract 30 and halve (80°F → 25°C, close to the exact 26.7°C).
Quick reference
| Fahrenheit | Celsius |
|---|---|
| 32°F | 0°C (freezing) |
| 68°F | 20°C (room temp) |
| 98.6°F | 37°C (body temp) |
| 212°F | 100°C (boiling) |
Frequently asked questions
What is 100°F in Celsius?
100°F is about 37.8°C.
Is 98.6°F a normal body temperature?
Yes — 98.6°F (37°C) is the traditional average normal body temperature.
Related tools & guides
- Celsius to Fahrenheit Converter (reverse)
- Temperature Converter (includes Kelvin)
- Temperature conversion: formula & chart