°C = (°F − 32) × 5/9
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| 0 | -17.78 |
| 10 | -12.22 |
| 20 | -6.67 |
| 32 | 0 |
| 40 | 4.44 |
| 50 | 10 |
| 60 | 15.56 |
| 68 | 20 |
| 72 | 22.22 |
| 77 | 25 |
| 80 | 26.67 |
| 90 | 32.22 |
| 98.6 | 37 |
| 100 | 37.78 |
| 120 | 48.89 |
| 150 | 65.56 |
| 212 | 100 |
| 350 | 176.67 |
| 450 | 232.22 |
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature, then multiply by 5/9. The formula is: °C = (°F − 32) × 5/9.
°C = (°F − 32) × 5/9
Convert 72°F (typical AC setting) to Celsius: (72 − 32) × 5/9 = 40 × 0.5556 = 22.22°C
Convert 350°F (baking temp) to Celsius: (350 − 32) × 5/9 = 318 × 0.5556 = 176.67°C
To convert Celsius to Fahrenheit, multiply by 9/5 then add 32: °F = (°C × 9/5) + 32.
\u2022 32°F (0°C) is when water freezes and you see frost on your windshield.
\u2022 72°F (22.2°C) is a typical comfortable thermostat setting.
\u2022 98.6°F (37°C) is normal human body temperature.
\u2022 350°F (176.7°C) is the standard oven temperature for baking cookies and cakes.
Fahrenheit to Celsius conversion is essential for Americans traveling abroad, cooking from international recipes, or communicating about weather with the rest of the world. The Fahrenheit scale is unique to the United States for everyday use, while Celsius is the global standard.
American thermostats are set in Fahrenheit. If you’re setting up a smart thermostat that defaults to Celsius, or if you’re following European energy-saving tips, you’ll need to convert. A comfortable 72°F equals about 22°C. Dropping your thermostat from 72°F to 68°F (20°C) can save significant energy.
American recipes use Fahrenheit for oven temperatures: 325°F (163°C) for slow baking, 350°F (177°C) for standard baking, 375°F (191°C) for cookies, 400°F (204°C) for roasting, 425°F (218°C) for pizza, and 450°F (232°C) for high-heat cooking. If your oven is metric, these conversions are essential.
All scientific work uses Celsius (or Kelvin). If you’re reading a scientific paper and see temperatures in Celsius but think in Fahrenheit, remember: each degree Celsius is 1.8 degrees Fahrenheit. A 5°C temperature change equals a 9°F change.
Subtract 30, then halve: 80°F − 30 = 50, ÷ 2 = 25°C (actual: 26.7°C). It’s quick and gets you within a few degrees — good enough for weather estimates.
The formula is: °C = (°F − 32) × 5/9. Subtract 32, then multiply by 0.5556.
72°F equals approximately 22.22°C — a comfortable room temperature.
350°F equals approximately 176.67°C — a standard baking temperature.
A fever is generally considered to start at 100.4°F (38°C). A high fever is 103°F (39.4°C) or above.
Absolute zero is −459.67°F (−273.15°C or 0 K). It’s the theoretical lowest possible temperature.