Fahrenheit to Celsius Calculator
Convert any temperature between Fahrenheit and Celsius instantly. Type in either field for an instant two-way conversion — includes feel description, Kelvin and a full common temperature reference table.
| °F | °C | Description |
|---|
How to Convert Fahrenheit to Celsius
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature then multiply by 5 and divide by 9. To convert in the other direction — Celsius to Fahrenheit — multiply by 9/5 then add 32.
Key Temperature Reference Points
| Temperature | °F | °C | What It Means |
|---|---|---|---|
| Absolute zero | −459.67°F | −273.15°C | The coldest possible temperature |
| Water freezes | 32°F | 0°C | Freezing point of water at sea level |
| Room temperature | 68–72°F | 20–22°C | Comfortable indoor temperature |
| Body temperature | 98.6°F | 37°C | Normal human body temperature |
| Fever threshold | 100.4°F | 38°C | Considered a fever in adults |
| Hot summer day | 86–95°F | 30–35°C | Hot weather — stay hydrated |
| Water boils | 212°F | 100°C | Boiling point of water at sea level |
| Moderate oven | 350°F | 177°C | Standard baking temperature |
| Hot oven | 425°F | 218°C | High heat baking — pizzas, pastries |
When Do You Need to Convert Fahrenheit to Celsius?
Fahrenheit is used primarily in the United States. The rest of the world — including the UK, Europe, Australia, Canada and most of Asia — uses Celsius. You'll need to convert when:
Fahrenheit vs Celsius — Which Countries Use Which?
The United States is the only major country that still officially uses Fahrenheit for everyday temperature. A handful of US territories including the Bahamas, Belize and the Cayman Islands also use it. Every other country in the world uses Celsius — making it by far the global standard for weather, science, medicine and cooking.
The Celsius scale was designed to be intuitive — 0°C is the freezing point of water and 100°C is the boiling point. The Fahrenheit scale predates Celsius and uses 32°F for freezing and 212°F for boiling, which most people outside the US find unintuitive.
FAQs
How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit temperature then multiply by 5 and divide by 9. For example, 98.6°F − 32 = 66.6 × 5/9 = 37°C. Or just use the calculator above for an instant result.
What is 32°F in Celsius?
32°F equals 0°C — the freezing point of water.
What is 98.6°F in Celsius?
98.6°F equals 37°C — normal human body temperature.
What is 212°F in Celsius?
212°F equals 100°C — the boiling point of water at sea level.
What is 72°F in Celsius?
72°F equals approximately 22.2°C — a comfortable room temperature.
What is the easiest way to convert Fahrenheit to Celsius mentally?
Subtract 32 then divide by 2 for a quick estimate. For example 72°F − 32 = 40 ÷ 2 = 20°C. The exact answer is 22.2°C but this shortcut is close enough for everyday use.
Which countries use Fahrenheit?
The United States is the only major country that uses Fahrenheit for everyday temperature. The rest of the world uses Celsius as standard.
Is this calculator free?
Yes — completely free, no sign-up required.