55°F is equal to 12.7778°C.
To convert 55 degrees Fahrenheit to Celsius, you subtract 32 from the Fahrenheit value, then multiply the result by 5/9. This process works because the Celsius and Fahrenheit scales have different zero points and increments per degree.
Conversion Tool
Result in celcius:
Conversion Formula
The formula to convert Fahrenheit (f) to Celsius (celcius) is:
C = (F – 32) × 5/9.
This formula works by adjusting the Fahrenheit temperature to account for the difference in where each scale starts (32°F is 0°C), then scales the number to Celsius increments, which are smaller than Fahrenheit increments. The subtraction removes the offset, and multiplication converts the unit size.
For example, with 55°F:
- Subtract 32: 55 – 32 = 23
- Multiply by 5/9: 23 × 5/9 = 115/9 ≈ 12.7778
- So, 55°F is about 12.78°C
Conversion Example
- Example: Convert 70°F to Celsius
- Subtract 32: 70 – 32 = 38
- Multiply by 5/9: 38 × 5/9 = 190/9 ≈ 21.1111
- Result: 70°F = 21.11°C
- Example: Convert 40°F to Celsius
- Subtract 32: 40 – 32 = 8
- Multiply by 5/9: 8 × 5/9 ≈ 4.4444
- Result: 40°F = 4.44°C
- Example: Convert 100°F to Celsius
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 ≈ 37.7778
- Result: 100°F = 37.78°C
- Example: Convert 32°F to Celsius
- Subtract 32: 32 – 32 = 0
- Multiply by 5/9: 0 × 5/9 = 0
- Result: 32°F = 0°C
Conversion Chart
| Fahrenheit (°F) | Celcius (°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 |
This chart allows you to quickly find Celsius equivalents for Fahrenheit values between 30 and 80 degrees. You can read across the rows, find your Fahrenheit temperature, and see the matching Celsius value without doing math.
Related Conversion Questions
- What is 55 degrees Fahrenheit in Celsius rounded to two decimals?
- How do you convert 55°F to Celsius without a calculator?
- Is 55°F considered warm or cool in Celsius?
- What Celsius temperature corresponds to 55 Fahrenheit for cooking?
- How does 55°F convert to Celsius in scientific experiments?
- Can I use the formula (F – 32) × 5/9 to convert 55 degrees Fahrenheit?
- Why is 55°F equal to 12.78°C and not 15°C?
Conversion Definitions
Fahrenheit (f): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric pressure. It is mostly used in the United States and some Caribbean countries for weather, cooking, and other temperature measurements.
Celcius: Celcius is a temperature scale widely used around the world, where 0 degrees represents the freezing point of water, and 100 degrees represents the boiling point at sea level. It’s the standard unit for most scientific temperature measurements.
Conversion FAQs
Why subtract 32 when converting Fahrenheit to Celsius?
Subtracting 32 adjusts the Fahrenheit temperature to match the zero point of the Celsius scale. Since 32°F is the freezing point of water, which is 0°C, this shift aligns the two scales before rescaling the units by multiplying by 5/9.
Can I convert Fahrenheit to Celsius by just multiplying by a number?
No, you cannot directly multiply Fahrenheit by a single number to get Celsius because the scales start at different points. You must first subtract 32 to remove the offset, then multiply by 5/9 to account for the different degree sizes.
Why do people use Fahrenheit instead of Celsius in some countries?
Fahrenheit is still used mainly in the United States because of tradition and familiarity. The scale’s increments can offer more precise readings for everyday temperatures, but Celsius is preferred globally for scientific and most practical purposes.
Is the formula the same for converting Celsius back to Fahrenheit?
No, to convert Celsius to Fahrenheit, a different formula is used: multiply Celsius by 9/5, then add 32. This reverses the subtraction and multiplication steps used when converting Fahrenheit to Celsius.
Does this conversion formula work for negative Fahrenheit temperatures?
Yes, the same formula applies for all Fahrenheit values, including negative numbers. The subtraction and multiplication correctly adjust the temperature to Celsius regardless of being above or below zero.