Fahrenheit to Celsius
Snapshot
1 Fahrenheit equals -17.222222 Celsius. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.
- Reference basis: This conversion uses a scale-and-offset equation (1 Fahrenheit equals -17.2222222222 Celsius.).
- Example: For 20 Fahrenheit, the converted value equals -6.666667 Celsius.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Converter Calculator
-17.222222 Celsius (°C)
SwitchExplanation
Use this page when you want a direct Fahrenheit to Celsius conversion. On this page, 1 Fahrenheit equals -17.222222 Celsius.
The direct answer, calculator, common values table, and FAQ all follow the same exact equation for this route: 1 Fahrenheit equals -17.2222222222 Celsius..
Fahrenheit (deg F): a temperature scale used mainly in the United States for weather, cooking, and household references.
Celsius (deg C): a relative temperature scale widely used in weather, science, and everyday measurement.
This route is useful for weather, cooking, HVAC, travel, and international references where fahrenheit and celsius describe the same physical temperature on different scales.
This conversion uses an affine temperature equation with scale and/or offset terms, so forward and reverse pages must use inverse formulas rather than one shared factor.
Common Conversion Values
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| -20 | -28.888889 |
| 0 | -17.777778 |
| 20 | -6.666667 |
| 32 | 0 |
| 37 | 2.777778 |
| 50 | 10 |
| 100 | 37.777778 |
| 212 | 100 |
Frequently Asked Questions
What is 1 Fahrenheit in Celsius?
1 Fahrenheit equals -17.222222 Celsius on this page.
What equation does this Fahrenheit to Celsius page use?
This page uses 1 Fahrenheit equals -17.2222222222 Celsius., and the same equation drives the direct answer, calculator, table, and FAQ.
Is there a reverse page for Celsius to Fahrenheit?
Yes. The reverse direction has its own page at /temperature/celsius-to-fahrenheit/, where the inverse equation is used so the mirror route stays numerically aligned.