Fahrenheit to Celsius Converter
Convert any Fahrenheit temperature to Celsius using the exact formula °C = (°F - 32) × 5/9. This converter also displays Kelvin and Rankine equivalents for scientific and engineering use.
Fahrenheit is the primary temperature scale in the United States, while Celsius is used throughout most of the world and in all scientific contexts. The conversion formula is: °C = (°F - 32) × 5/9. Subtract 32 to remove the offset between the two scales' zero points, then multiply by 5/9 to adjust for the different degree sizes.
Common Fahrenheit to Celsius Conversions:
| Fahrenheit | Celsius | Description |
|---|---|---|
| -40°F | -40°C | Scales intersect |
| 0°F | -17.78°C | Fahrenheit zero |
| 32°F | 0°C | Water freezes |
| 68°F | 20°C | Room temperature |
| 98.6°F | 37°C | Body temperature |
| 212°F | 100°C | Water boils |
| 350°F | 176.67°C | Common oven temp |
| 400°F | 204.44°C | High oven temp |
Quick Mental Math Shortcut: Subtract 30, then divide by 2. This gives a rough estimate (e.g., 98°F ≈ 34°C, actual is 36.67°C). For exact conversions, use the 5/9 formula or this converter.