How to convert fahrenheit to celsius
Use the formula below. ConvertPulse keeps the full conversion constant during calculation and rounds only the displayed result.
For example, 10 °F equals -12.2222 °C.
Fahrenheit to Celsius reference table
| Fahrenheit | Celsius |
|---|---|
| 1 °F | -17.2222 °C |
| 5 °F | -15 °C |
| 10 °F | -12.2222 °C |
| 25 °F | -3.8889 °C |
| 50 °F | 10 °C |
| 100 °F | 37.7778 °C |
Understanding the result
Keep extra decimal places while you work, then round once at the end. For everyday use, two to four decimal places is usually enough. Scientific, engineering, and regulated work may require a specified precision or reference standard.
Reading Fahrenheit values on the Celsius scale
Fahrenheit and Celsius have different zero points and degree sizes. Subtract 32 from the Fahrenheit value, then multiply by 5/9. The result is an absolute temperature, not just a scaled interval.
- For a rough weather estimate, subtract 30 and divide by 2.
- Use the exact formula for ovens, laboratories, and technical limits.
- A change of 1 °F equals a change of 5/9 °C.
Reference: NIST: SI Units – Temperature.
Frequently asked questions
What is the conversion formula?
°C = (°F − 32) × 5/9.
How accurate is this converter?
ConvertPulse uses established conversion constants and keeps additional precision during calculation before displaying a readable result.
Can I use this result for professional work?
The calculation is suitable for general use. Regulated engineering, medical, or legal work may require specific rounding rules and independently verified standards.