degree Fahrenheit to degree Celsius — free converter
Formula
°C = (°F − 32) × 5/9
Worked example
15 degrees Fahrenheit = -9.44444 degrees Celsius.
Conversion table
| Degree fahrenheit | Degree celsius |
|---|---|
| 1 degrees Fahrenheit | -17.2222 degrees Celsius |
| 2 degrees Fahrenheit | -16.6667 degrees Celsius |
| 5 degrees Fahrenheit | -15 degrees Celsius |
| 10 degrees Fahrenheit | -12.2222 degrees Celsius |
| 25 degrees Fahrenheit | -3.88889 degrees Celsius |
| 50 degrees Fahrenheit | 10 degrees Celsius |
| 100 degrees Fahrenheit | 37.7778 degrees Celsius |
What these units mean
Fahrenheit is the temperature scale used for weather and cooking in the United States. Celsius is the temperature scale used for weather and cooking in most of the world. When you change from degrees Fahrenheit to degrees Celsius, you are simply expressing the same amount on a different scale, so the quantity itself does not change — only the number and the unit label do. A quick everyday check helps: picture the amount in your own life first, then let the converter do the arithmetic, and the result should feel roughly right before you use it for a purchase, a recipe or a journey.
FAQs about degree Fahrenheit to degree Celsius
How many degrees Celsius are in 1 degree Fahrenheit?
1 degree Fahrenheit = -17.2222 degree Celsius.
What is the formula for degree Fahrenheit to degree Celsius?
°C = (°F − 32) × 5/9. Temperature is not a simple multiplication: it uses a formula with an added or subtracted constant, because the two scales start at different points.
What is 15 degrees Fahrenheit in degrees Celsius?
15 degrees Fahrenheit = -9.44444 degrees Celsius.
How do I convert degrees Celsius back to degrees Fahrenheit?
Use the reverse page: degree Celsius to degree Fahrenheit. The converter on that page swaps the direction for you.
Is the degree Fahrenheit to degree Celsius result exact?
The factor is the standard published factor, and the converter shows the result rounded for reading. For everyday use this is exact enough; for engineering or laboratory work, check the rounding your task requires.