55 degrees Fahrenheit is equal to 12.7778 degrees Celsius.
To convert 55°F to Celsius, you subtract 32 from the Fahrenheit value, then multiply the result by 5/9. This formula adjusts for differences in the scale starting points and increments between Fahrenheit and Celsius temperature measurements.
Conversion Tool
Result in celcius:
Conversion Formula
The formula to convert Fahrenheit (f) to Celsius (celcius) is:
C = (F – 32) × 5/9
This works by first adjusting the Fahrenheit temperature by subtracting 32, which aligns the zero points of both scales. Then, multiplying by 5/9 converts the Fahrenheit degrees into Celsius degrees because the two scales increase at different rates.
Example:
Convert 55°F to Celsius:
- Subtract 32: 55 – 32 = 23
- Multiply by 5/9: 23 × 5/9 = 12.7778
- Result: 12.7778°C
Conversion Example
- Convert 70°F to Celsius
- 70 – 32 = 38
- 38 × 5/9 = 21.1111
- Result: 21.1111°C
- Convert 40°F to Celsius
- 40 – 32 = 8
- 8 × 5/9 = 4.4444
- Result: 4.4444°C
- Convert 100°F to Celsius
- 100 – 32 = 68
- 68 × 5/9 = 37.7778
- Result: 37.7778°C
- Convert 32°F to Celsius
- 32 – 32 = 0
- 0 × 5/9 = 0
- Result: 0°C
Conversion Chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 30.0 | -1.1111 |
| 35.0 | 1.6667 |
| 40.0 | 4.4444 |
| 45.0 | 7.2222 |
| 50.0 | 10.0000 |
| 55.0 | 12.7778 |
| 60.0 | 15.5556 |
| 65.0 | 18.3333 |
| 70.0 | 21.1111 |
| 75.0 | 23.8889 |
| 80.0 | 26.6667 |
The chart shows Fahrenheit values in one column and their converted Celsius equivalents in another. You can find a Fahrenheit temperature, then read across to see its Celsius value without doing the math yourself.
Related Conversion Questions
- What is 55 degrees Fahrenheit in Celsius with decimals?
- How can I quickly convert 55°F to Celsius without a calculator?
- Is 55°F cold or warm in Celsius terms?
- What temperature does 55°F equal in Celsius for cooking?
- How do I convert 55 Fahrenheit into Celsius using a formula?
- What is the Celsius equivalent of 55°F in weather reports?
- Can 55°F be safely converted to Celsius for scientific experiments?
Conversion Definitions
f (Fahrenheit): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric pressure. It is used primarily in the United States and some Caribbean countries for weather forecasts, cooking, and industrial purposes.
celcius (Celsius): Celsius is a temperature scale with 0 degrees as the freezing point of water and 100 degrees as its boiling point at sea level. It is widely used around the world for scientific measurements, weather reporting, and daily temperature readings.
Conversion FAQs
Why do we subtract 32 in the Fahrenheit to Celsius conversion?
The value 32 corresponds to the freezing point of water on the Fahrenheit scale. Subtracting 32 shifts the scale so the freezing point aligns with zero, matching the Celsius scale’s zero point before adjusting the value by multiplying by 5/9.
Is the conversion formula exact for all temperatures?
The formula C = (F – 32) × 5/9 is mathematically exact for converting Fahrenheit to Celsius within the range of real numbers, as both scales are linear. Small rounding errors can occur only due to decimal approximations when reporting results.
Can I convert Celsius back to Fahrenheit using a similar formula?
Yes, the reverse formula is F = (C × 9/5) + 32. This multiplies the Celsius value to match the Fahrenheit scale increments, then adds 32 to shift the zero point back to Fahrenheit’s freezing point.
Why does multiplying by 5/9 convert Fahrenheit degrees into Celsius?
Because the size of one degree Fahrenheit is smaller than one degree Celsius. There are 180 Fahrenheit degrees between freezing and boiling points of water, but only 100 Celsius degrees. The ratio 5/9 adjusts for this difference in unit size.
Are there any temperature scales other than Fahrenheit and Celsius?
Yes, the Kelvin scale is used in science, starting at absolute zero (-273.15°C). Rankine is another, mostly used in engineering fields. However, Fahrenheit and Celsius remain the most common for everyday and weather use.