28°F is approximately -2.2222°C.
Table of Contents
To convert 28 degrees Fahrenheit to Celsius, you subtract 32 from the Fahrenheit value, then multiply the result by 5/9. This changes the temperature into the Celsius scale which measures temperature differently.
Conversion Tool
Result in celcius:
Conversion Formula
The formula to convert Fahrenheit to Celsius is: C = (F – 32) × 5/9.
This formula works because Fahrenheit and Celsius scales start at different points and use different sized degrees. The 32 is subtracted to offset the freezing point of water in Fahrenheit, which is 32°F, equivalent to 0°C.
Here is an example using 28°F:
- Subtract 32 from 28: 28 – 32 = -4
- Multiply the result by 5/9: -4 × 5/9 = -20/9
- Calculate -20/9 ≈ -2.2222°C
Conversion Example
- Convert 50°F to Celsius:
- Subtract 32: 50 – 32 = 18
- Multiply by 5/9: 18 × 5/9 = 90/9
- Calculate 90/9 = 10°C
- Convert 77°F to Celsius:
- Subtract 32: 77 – 32 = 45
- Multiply by 5/9: 45 × 5/9 = 225/9
- Calculate 225/9 = 25°C
- Convert 15°F to Celsius:
- Subtract 32: 15 – 32 = -17
- Multiply by 5/9: -17 × 5/9 = -85/9
- Calculate -85/9 ≈ -9.4444°C
- Convert 100°F to Celsius:
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 = 340/9
- Calculate 340/9 ≈ 37.7778°C
Conversion Chart
The chart below shows Fahrenheit values from 3.0°F to 53.0°F and their Celsius equivalents. To use the chart, find the Fahrenheit value in the left column and read across to see the corresponding Celsius temperature.
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 3.0 | -16.1111 |
| 8.0 | -13.3333 |
| 13.0 | -10.5556 |
| 18.0 | -7.7778 |
| 23.0 | -5.0000 |
| 28.0 | -2.2222 |
| 33.0 | 0.5556 |
| 38.0 | 3.3333 |
| 43.0 | 6.1111 |
| 48.0 | 8.8889 |
| 53.0 | 11.6667 |
Related Conversion Questions
- How cold is 28°F in Celsius compared to freezing point?
- What is the Celsius equivalent when temperature is 28 degrees Fahrenheit?
- Can 28°F be converted to Celsius without a calculator?
- Why does 28°F convert to a negative Celsius number?
- Is 28°F warmer or colder than 0°C?
- What formula to use to convert 28 Fahrenheit to Celsius?
- How to convert 28°F to Celsius manually step by step?
Conversion Definitions
F (Fahrenheit): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard conditions. It’s used mostly in the United States and some Caribbean countries. Each degree Fahrenheit is 1/180th of the temperature difference between freezing and boiling points of water.
Celcius: Celcius is a temperature scale based on the freezing point of water at 0 degrees and boiling at 100 degrees under normal atmospheric pressure. It is part of the metric system and widely used in science and most countries worldwide for weather and temperature measurements.
Conversion FAQs
Can the Fahrenheit to Celsius formula be reversed to convert Celsius to Fahrenheit?
Yes, the formula reverses by solving for Fahrenheit: F = (C × 9/5) + 32. This switches the roles of the scales, converting Celsius values back into Fahrenheit accurately.
Why does subtracting 32 come first in the conversion formula?
Subtracting 32 adjusts the Fahrenheit value by the freezing point offset. Since water freezes at 32°F but 0°C, removing 32 aligns the scales to begin conversion based on the temperature difference, before adjusting for degree size.
Is the Celsius value always smaller than the Fahrenheit value?
No, Celsius values can be greater or smaller than Fahrenheit depending on the temperature. For example, 100°F is about 37.78°C, which is smaller numerically, but 0°F is -17.78°C, where Celsius is smaller.
Does this conversion apply to negative Fahrenheit values?
Yes, the same formula applies regardless of the sign. Negative Fahrenheit numbers convert into Celsius by subtracting 32 and multiplying by 5/9, which can result in either negative or positive Celsius depending on the input.
Why are Fahrenheit degrees not equal in size to Celsius degrees?
The Fahrenheit and Celsius scales differ in degree size because Fahrenheit divides the range between freezing and boiling of water into 180 degrees, while Celsius uses 100 degrees. This difference causes varying step sizes between the scales.