27 degrees Fahrenheit equals approximately -2.7778 degrees Celsius.
To convert 27 Fahrenheit to Celsius, subtract 32 from 27, then multiply the result by 5/9. This formula adjusts for the difference between the two temperature scales, converting the Fahrenheit reading into its Celsius equivalent.
Conversion Tool
Result in celsius:
Conversion Formula
The formula to convert Fahrenheit (°F) to Celsius (°C) is:
C = (F – 32) × 5/9
This formula works because the Fahrenheit and Celsius scales start at different points and have different sized degrees. Subtracting 32 accounts for the offset of freezing point of water in Fahrenheit, and multiplying by 5/9 adjusts for the size difference between degrees.
Step-by-step example for 27°F:
- Subtract 32: 27 – 32 = -5
- Multiply by 5/9: -5 × 5/9 = -25/9 ≈ -2.7778
- Result: -2.7778°C
Conversion Example
- 50°F to Celsius:
- Subtract 32: 50 – 32 = 18
- Multiply by 5/9: 18 × 5/9 = 90/9 = 10
- Result: 10°C
- 10°F to Celsius:
- Subtract 32: 10 – 32 = -22
- Multiply by 5/9: -22 × 5/9 = -110/9 ≈ -12.2222
- Result: -12.2222°C
- 100°F to Celsius:
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 = 340/9 ≈ 37.7778
- Result: 37.7778°C
- 0°F to Celsius:
- Subtract 32: 0 – 32 = -32
- Multiply by 5/9: -32 × 5/9 = -160/9 ≈ -17.7778
- Result: -17.7778°C
Conversion Chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 2.0 | -16.6667 |
| 7.0 | -13.8889 |
| 12.0 | -11.1111 |
| 17.0 | -8.3333 |
| 22.0 | -5.5556 |
| 27.0 | -2.7778 |
| 32.0 | 0.0000 |
| 37.0 | 2.7778 |
| 42.0 | 5.5556 |
| 47.0 | 8.3333 |
| 52.0 | 11.1111 |
The chart shows Fahrenheit values on left and their Celsius equivalents on right. You can scan the Fahrenheit column to find the temperature then see corresponding Celsius on the right. It helps quick lookups without calculation.
Related Conversion Questions
- What does 27°F convert to in Celsius with decimals?
- How cold is 27 degrees Fahrenheit in Celsius scale?
- Is 27°F below freezing in Celsius?
- How to manually convert 27 Fahrenheit to Celsius?
- What’s the Celsius equivalent of 27°F for cooking?
- How to convert temperatures like 27°F to Celsius on a calculator?
- Does 27 degrees Fahrenheit mean freezing point in Celsius?
Conversion Definitions
Fahrenheit: 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 United States and some Caribbean countries for weather and cooking temperature.
Celsius: Celsius scale measures temperature where zero degrees is freezing point of water and 100 degrees is boiling point. It is used worldwide for science, weather forecasts, and everyday temperature readings outside of few countries.
Conversion FAQs
Why do we subtract 32 in Fahrenheit to Celsius conversion?
Subtracting 32 accounts for the difference in zero points of the two scales. Fahrenheit sets freezing of water at 32°F, while Celsius uses 0°C. Without subtracting, the conversion would be inaccurate because the scales start at different points.
Can I convert negative Fahrenheit values using the same formula?
Yes, the formula works for any Fahrenheit number, positive or negative. Simply subtract 32 and multiply by 5/9. Negative Fahrenheit temperatures will convert to negative Celsius values, reflecting cold conditions.
Why multiply by 5/9 instead of other fractions?
Because one degree Fahrenheit is smaller than one degree Celsius. The ratio of the size of one degree Fahrenheit to one degree Celsius is 5/9. This fraction scales temperature difference correctly from Fahrenheit units to Celsius units.
How accurate is the formula for everyday use?
The formula provides exact conversions mathematically and is accurate enough for all general uses like weather reporting, cooking, and scientific purposes. Rounding may occur when reporting values with limited decimal places.
Can I convert Celsius back to Fahrenheit with a similar formula?
Yes, the inverse formula is F = (C × 9/5) + 32. It reverses the process by scaling Celsius degrees up and adding 32 to adjust the zero point to Fahrenheit scale.