Fahrenheit to Celsius Converter
Convert temperature from Fahrenheit (°F) to Celsius (°C) instantly. Perfect for weather, cooking, science, and international temperature conversions.
Quick Reference - Common Temperatures
Fahrenheit to Celsius Formula
Step-by-Step Example
To convert 68°F to Celsius:
- Subtract 32 from the Fahrenheit temperature: 68 - 32 = 36
- Multiply the result by 5/9: 36 × 5/9 = 20
- Result: 68°F = 20°C
Fahrenheit to Celsius Conversion Table
| Fahrenheit (°F) | Celsius (°C) | Description |
|---|---|---|
| -40°F | -40°C | Extremely cold (same value) |
| 0°F | -17.8°C | Very cold winter day |
| 32°F | 0°C | Freezing point of water |
| 50°F | 10°C | Cool day |
| 68°F | 20°C | Room temperature |
| 77°F | 25°C | Comfortable warm day |
| 86°F | 30°C | Hot day |
| 98.6°F | 37°C | Normal body temperature |
| 100°F | 37.8°C | Fever temperature |
| 212°F | 100°C | Boiling point of water |
About Fahrenheit and Celsius
Fahrenheit Scale
The Fahrenheit scale was created by German physicist Daniel Gabriel Fahrenheit in 1724. It's primarily used in the United States, Bahamas, Belize, and the Cayman Islands. On this scale, water freezes at 32°F and boils at 212°F at sea level.
Celsius Scale
The Celsius scale (formerly called centigrade) was created by Swedish astronomer Anders Celsius in 1742. It's used by most countries worldwide and is the standard in scientific contexts. Water freezes at 0°C and boils at 100°C at sea level.
Why Two Scales?
The Celsius scale is more intuitive as it's based on the freezing and boiling points of water (0° and 100°). Fahrenheit offers more granularity in everyday temperatures - the range between freezing and comfortable room temperature is about 36 degrees in Fahrenheit versus 20 in Celsius.
Common Uses for Temperature Conversion
🌡️ Weather Forecasts
Convert weather temperatures when traveling internationally or reading foreign weather reports. Most countries use Celsius, while the US uses Fahrenheit.
👨🍳 Cooking & Baking
Recipe temperatures often need conversion, especially when using international cookbooks. Oven temperatures, meat doneness, and candy-making require precise conversions.
🏥 Medical & Health
Body temperature readings may need conversion depending on your thermometer. Normal body temperature is 98.6°F or 37°C.
🔬 Science & Engineering
Scientific work typically uses Celsius (or Kelvin), so US-based professionals often need to convert Fahrenheit measurements.
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 temperature, then multiply by 5/9 (or divide by 1.8).
What temperature is the same in Fahrenheit and Celsius?
-40° is the same in both scales. -40°F = -40°C. This is the only point where the two scales intersect.
Which countries use Fahrenheit?
Only a few countries primarily use Fahrenheit: the United States, Bahamas, Belize, Cayman Islands, and Palau. The rest of the world uses Celsius.
Is 0°F very cold?
Yes! 0°F equals -17.8°C, which is well below freezing. This is considered very cold winter weather.
What is a comfortable room temperature?
Comfortable room temperature is typically 68-72°F (20-22°C). This may vary based on personal preference, humidity, and activity level.