Accurate Fahrenheit to Celsius converter for American weather, cooking, and health needs. Convert 70 fahrenheit to celsius, 80 fahrenheit to celsius, 90 fahrenheit to celsius, 32 fahrenheit to celsius (freezing point), and any temperature for weather, cooking, and body temperature monitoring.
Convert Fahrenheit to Celsius using the official US customary standard formula: (°F - 32) × 5/9 = °C. Perfect for US weather forecasts, cooking temperatures, body temperature monitoring, and everyday temperature conversions.
Accurate Fahrenheit to Celsius converter for American weather, cooking, and health needs. Convert 70 fahrenheit to celsius, 80 fahrenheit to celsius, 90 fahrenheit to celsius, 32 fahrenheit to celsius (freezing point), and any temperature for weather, cooking, and body temperature monitoring.
Convert Fahrenheit to Celsius using the official US customary standard formula: (°F - 32) × 5/9 = °C. Perfect for US weather forecasts, cooking temperatures, body temperature monitoring, and everyday temperature conversions.
High precision needed for scientific experiments and medical applications. For daily weather and home thermostats, whole numbers are sufficient. Cooking temperatures often use whole numbers for both scales. Body temperature monitoring should use 1 decimal place.
Common mistake: Forgetting to subtract 32 before multiplying by 5/9. Another common error is using 9/5 instead of 5/9, which gives the wrong result. Remember: 70°F = 21.1°C, 80°F = 26.7°C, 90°F = 32.2°C, 32°F = 0°C (freezing point), 98.6°F = 37°C (normal body temp).
| Item | Fahrenheit (°F) | Celsius (°C) |
|---|---|---|
| Freezing point | 32 | 0 |
| 60°F | 60 | 15.6 |
| 70°F (room) | 70 | 21.1 |
| 80°F | 80 | 26.7 |
| 90°F | 90 | 32.2 |
| Body temp | 98.6 | 37 |
| Water boils | 212 | 100 |
| Oven 350°F | 350 | 177 |
Subtract 32, then multiply by 5/9: (°F - 32) × 5/9 = °C. This is the standard fahrenheit to celsius formula.
70°F equals approximately 21.1°C, which is comfortable room temperature.
80°F equals approximately 26.7°C, a typical summer temperature in many parts of the US.
90°F equals approximately 32.2°C, a hot summer day in the American South.
32°F equals exactly 0°C, which is the freezing point of water.
Standard room temperature is 68-72°F, which equals 20-22.2°C.
The formula is: Celsius = (Fahrenheit - 32) × 5/9. Reverse: Fahrenheit = Celsius × 9/5 + 32.
Normal body temperature is 98.6°F, which equals 37°C.
Water freezes at 32°F, which is exactly 0°C.
Fahrenheit is part of the US customary system. Water freezes at 32°F and boils at 212°F. Americans use Fahrenheit for weather, cooking, and everyday temperature measurements.
Last Updated: 2026 · Reviewed by the UnitFig editorial team