Direct conversion
Convert degree Fahrenheit [°F] to degree Celsius [°C] instantly with formula, examples, chart, and FAQs.
°C = (°F − 32) × 5/9
°C = (°F − 32) × 5/9
Example: 1 degree Fahrenheit [°F] equals -17.222222 degree Celsius [°C].
Temperature conversions are formula based, not factor based. Celsius, Fahrenheit, Kelvin, and Rankine are converted through the correct scale equations.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The degree Fahrenheit is a temperature scale commonly used in the United States for weather and household temperatures.
HistoryThe Fahrenheit scale was developed in the early 18th century and remains part of US customary measurement.
Current useFahrenheit is used for weather forecasts, ovens, thermostats, body temperature, and consumer appliances in the United States.
The degree Celsius is a temperature scale where water freezes at 0 and boils near 100 at standard pressure.
HistoryThe Celsius scale developed from the centigrade scale and is now linked to the kelvin temperature scale.
Current useCelsius is used for weather, cooking, science, health, HVAC, and everyday temperature measurement in most countries.
| degree Fahrenheit [°F] | degree Celsius [°C] |
|---|---|
| -40 | -40 |
| 0 | -17.777778 |
| 1 | -17.222222 |
| 10 | -12.222222 |
| 20 | -6.666667 |
| 25 | -3.888889 |
| 32 | 0 |
| 50 | 10 |
| 100 | 37.777778 |
Use this formula: °C = (°F − 32) × 5/9 Enter your value in the calculator and the result updates instantly.
1 degree Fahrenheit [°F] equals -17.222222 degree Celsius [°C].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.