°F to °C Converter - Fahrenheit to Celsius
Fahrenheit (°F) to Celsius (°C)
Direct answer
1 °F = -17.2222222222 °C
°C = (°F - 32) × 5/9
Converter
Conversion formula
°C = (°F - 32) × 5/9
°F = °C × 9/5 + 32
Example: 10 °F = -12.2222222222 °C.
Note: this conversion depends on a specific unit definition or physical assumption. Check the context before using it in reports.
Common conversion table
| °F | °C |
|---|---|
| 1 °F | -17.2222222222 °C |
| 2 °F | -16.6666666667 °C |
| 5 °F | -15 °C |
| 10 °F | -12.2222222222 °C |
| 20 °F | -6.66666666667 °C |
| 50 °F | 10 °C |
| 100 °F | 37.7777777778 °C |
| 1,000 °F | 537.777777778 °C |
Temperature conversion derivation
Convert °F to Kelvin first, then convert from Kelvin to °C. Temperature scales use both scaling and offset, so a single multiplicative factor is not enough.
- 1
°F to Kelvin
- 2
Kelvin to °C
- 3
Combined formula
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Why the Fahrenheit-to-Celsius Conversion Holds
The conversion from Fahrenheit to Celsius is not a simple multiplication because both scales use different reference points and scaling. The formula adjusts for these differences.
Definition
The formula °C = (°F - 32) × 5/9 is derived from the relationship between the Fahrenheit and Celsius scales, which are offset and scaled differently.
Principle
The conversion holds because it accounts for the offset between the scales, where 32°F is defined as 0°C, and applies the ratio of their degree sizes, 5/9.
Assumptions
- Temperature scale conversions use offsets, not only multiplicative factors.
- The conversion depends on a specific unit definition or physical assumption.
Cautions
- Check the context before using this conversion in reports.
- A single multiplicative factor is insufficient for temperature scale conversions.
FAQ
How many °C are in 1 °F?
1 °F = -17.2222222222 °C.
How many °C are in 10 °F?
10 °F = -12.2222222222 °C.
How many °C are in 100 °F?
100 °F = 37.7777777778 °C.
What is the formula to convert °F to °C?
Use °C = (°F - 32) × 5/9.
How many °F are in 1 °C?
1 °C = 33.8 °F.
What should I check when converting °F to °C?
Note: this conversion depends on a specific unit definition or physical assumption. Check the context before using it in reports.