27 degrees Fahrenheit is approximately -2.7778 degrees Celsius.
To convert 27 degrees Fahrenheit to Celsius, subtract 32 from 27, then multiply the result by 5/9. This formula adjusts for the difference in zero points and scale size between the two temperature units.
Conversion Tool
Result in celsius:
Conversion Formula
The formula to convert Fahrenheit (°F) to Celsius (°C) is:
°C = (°F − 32) × 5/9
This works because Fahrenheit and Celsius scales have different zero points and increments. Fahrenheit sets 32 as the freezing point of water, while Celsius uses 0. The multiplication by 5/9 adjusts for the size difference of each degree unit.
For example, converting 27°F to Celsius:
- Subtract 32: 27 − 32 = -5
- Multiply by 5/9: -5 × 5/9 = -25/9
- Calculate result: -25/9 ≈ -2.7778°C
Conversion Example
- Convert 50°F to Celsius:
- 50 − 32 = 18
- 18 × 5/9 = 90/9
- 90/9 = 10°C
- Convert 10°F to Celsius:
- 10 − 32 = -22
- -22 × 5/9 = -110/9
- -110/9 ≈ -12.2222°C
- Convert 77°F to Celsius:
- 77 − 32 = 45
- 45 × 5/9 = 225/9
- 225/9 = 25°C
- Convert 0°F to Celsius:
- 0 − 32 = -32
- -32 × 5/9 = -160/9
- -160/9 ≈ -17.7778°C
Conversion Chart
This chart shows Fahrenheit values from 2.0 to 52.0 and their equivalent Celsius values. To find a Celsius equivalent for any Fahrenheit temperature in this range, locate the Fahrenheit in the left column and read across to the Celsius value.
| 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 |
Related Conversion Questions
- How cold is 27 degrees Fahrenheit in Celsius?
- What’s 27°F converted to Celsius without a calculator?
- Is 27 degrees Fahrenheit below freezing in Celsius?
- How do I manually convert 27°F into Celsius units?
- What temperature does 27°F correspond to on the Celsius scale?
- Can 27°F be rounded to Celsius to the nearest whole number?
- Why does 27°F equal a negative Celsius temperature?
Conversion Definitions
Degrees: Degrees are units used to measure angles or temperature. In temperature scales, degrees mark incremental steps between fixed points, like freezing and boiling of water. The degree symbol (°) precedes the scale abbreviation to indicate the unit.
Celsius: Celsius is a temperature scale where water freezes at 0 degrees and boils at 100 degrees under standard atmospheric pressure. It’s widely used worldwide and based on the metric system, allowing easy conversion between temperature units.
Conversion FAQs
Why do we subtract 32 when converting Fahrenheit to Celsius?
Fahrenheit uses 32 as the freezing point of water, while Celsius uses 0. Subtracting 32 shifts the Fahrenheit value to a scale starting at water’s freezing point, aligning it with Celsius before scaling the difference by 5/9.
Can I use the conversion formula for negative Fahrenheit values?
Yes, the formula works for negative and positive Fahrenheit temperatures. Since it’s a linear formula, negative values are processed the same way, ensuring accurate Celsius results below freezing points.
Why multiply by 5/9 during conversion?
Because one Fahrenheit degree is smaller than one Celsius degree, multiplying by 5/9 scales the temperature difference correctly. The ratio 5:9 comes from the size difference between the two degree units on their respective scales.
Is the conversion formula reversible?
You can reverse the formula to convert Celsius to Fahrenheit by multiplying by 9/5 and adding 32. This inverse maintains consistency between the two temperature scales for any given temperature.
Do small rounding differences affect temperature readings much?
Small rounding errors usually have minimal impact for everyday use, but precise scientific calculations may need more exact values. The common four-decimal place rounding balances accuracy and simplicity for general conversions.