55°F is equal to 12.7778°C.
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature, then multiply the result by 5/9. This formula converts the temperature scale from Fahrenheit, which is based on a different zero point and degree size, to Celsius, which is based on the freezing and boiling points of water.
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 because the Fahrenheit scale sets the freezing point of water at 32°F, and the boiling point at 212°F, creating 180 degrees between those points. Celsius divides the same interval into 100 degrees. So, subtracting 32 aligns the zero points, and multiplying by 5/9 adjusts the scale size.
Step-by-step example for 55°F:
- Subtract 32: 55 – 32 = 23
- Multiply by 5/9: 23 × 5/9 = 23 × 0.5555… = 12.7778°C
Conversion Example
- 68°F to Celsius:
- Subtract 32: 68 – 32 = 36
- Multiply by 5/9: 36 × 5/9 = 20°C
- 77°F to Celsius:
- Subtract 32: 77 – 32 = 45
- Multiply by 5/9: 45 × 5/9 = 25°C
- 41°F to Celsius:
- Subtract 32: 41 – 32 = 9
- Multiply by 5/9: 9 × 5/9 = 5°C
- 100°F to Celsius:
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 ≈ 37.7778°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 from 30.0 to 80.0 and their Celsius equivalents. You can find the Fahrenheit temperature in the left column, then read across to see the Celsius value. Use this for quick reference without needing to calculate each time.
Related Conversion Questions
- What is 55 degrees Fahrenheit in Celsius rounded to two decimals?
- How do I convert 55°F to Celsius using a calculator?
- Is 55 degrees Fahrenheit warm or cool in Celsius?
- Can you show the formula to change 55°F into Celsius?
- What is the Celsius equivalent of 55°F for cooking?
- How many degrees Celsius equals 55 Fahrenheit exactly?
- What temperature in Celsius equals 55 degrees on the Fahrenheit scale?
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 widely used in the United States and some Caribbean countries for weather forecasts, cooking, and industrial applications.
Celcius (celcius): Celsius is a temperature scale based on the freezing point of water at 0 degrees and boiling point at 100 degrees, under normal atmospheric pressure. It is used almost worldwide for science, weather, and everyday temperature measurements.
Conversion FAQs
Why does the formula subtract 32 when converting Fahrenheit to Celsius?
The Fahrenheit scale sets the freezing point of water at 32 degrees, unlike Celsius at 0 degrees. Subtracting 32 shifts the Fahrenheit value down to zero at the freezing point before scaling it with 5/9. Without this adjustment, the calculation would be inaccurate.
Can I convert Fahrenheit to Celsius without a calculator?
Yes, but it might not be precise. You can subtract 30 from the Fahrenheit value and then divide by 2 for an approximate Celsius temperature. For example, 55°F – 30 = 25, divided by 2 = about 12.5°C, which is close to the exact value of 12.78°C.
Why is Celsius spelled ‘celcius’ here?
“Celcius” is a common misspelling of Celsius. The correct spelling honors Anders Celsius, the Swedish astronomer who created the scale. Despite this, “celcius” is widely used incorrectly in informal writing or typing errors.
Is the conversion formula the same for negative Fahrenheit temperatures?
Yes, the formula C = (F – 32) × 5/9 works for all Fahrenheit values, including negatives. The subtraction and multiplication apply the same way, correctly converting cold temperatures below freezing point.
What causes the Fahrenheit and Celsius scales to have different zero points?
Fahrenheit was based on a mixture of ice, water, and ammonium chloride for zero, while Celsius was based on the freezing point of water. These different references create the offset of 32 degrees between the scales’ zero points.
