28 degrees Fahrenheit equals approximately -2.2222 degrees Celsius.
To convert 28°F to Celsius, subtract 32 from the Fahrenheit value, then multiply by 5/9. This adjusts the temperature scale from Fahrenheit’s freezing point at 32 to Celsius’s freezing point at 0, scaling the difference by the ratio of their degree sizes.
Conversion Tool
Result in celcius:
Conversion Formula
The formula to convert Fahrenheit (f) to Celsius (C) is:
C = (F – 32) × 5/9
This formula works by first subtracting 32 from the Fahrenheit temperature which aligns the freezing points of both scales to zero. The multiplication by 5/9 scales the remaining value because Fahrenheit degrees are smaller than Celsius degrees; there are 180 Fahrenheit degrees between freezing and boiling, but only 100 Celsius degrees.
For example, converting 28°F:
Step 1: Subtract 32 → 28 – 32 = -4
Step 2: Multiply by 5/9 → -4 × 5/9 = -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 = 10°C
- Convert 10°F to Celsius:
- Subtract 32: 10 – 32 = -22
- Multiply by 5/9: -22 × 5/9 = -110/9 ≈ -12.2222°C
- Convert 100°F to Celsius:
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 = 340/9 ≈ 37.7778°C
- Convert 0°F to Celsius:
- Subtract 32: 0 – 32 = -32
- Multiply by 5/9: -32 × 5/9 = -160/9 ≈ -17.7778°C
Conversion Chart
The chart below shows Fahrenheit values from 3.0 to 53.0 and their Celsius equivalents. You can use this chart to quickly find approximate Celsius temperatures for common Fahrenheit values without calculation.
| 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
- What is 28 degrees Fahrenheit in Celsius with decimals?
- How do I convert 28°F to Celsius on a calculator?
- Is 28°F above or below freezing in Celsius?
- What temperature in Celsius equals 28 degrees Fahrenheit?
- Why does 28°F convert to a negative Celsius value?
- How accurate is the formula to convert 28°F to Celsius?
- Can I use the same formula to convert 28°F to Kelvin?
Conversion Definitions
F (Fahrenheit): Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric conditions. It’s commonly used in the United States and some Caribbean nations for weather forecasts and cooking temperatures. The scale divides the range between freezing and boiling into 180 equal parts.
Celcius: Celsius is a temperature scale in which water freezes at 0 degrees and boils at 100 degrees under standard atmospheric pressure. It is widely used around the world for scientific and everyday temperature measurements. The scale divides the freezing-to-boiling range of water into 100 equal parts called degrees.
Conversion FAQs
Why does subtracting 32 appear in the Fahrenheit to Celsius formula?
Because the Fahrenheit scale sets water freezing at 32°F, subtracting 32 shifts the temperature value down to zero corresponding to water’s freezing point in Celsius. This aligns the two scales’ reference points before scaling the difference by 5/9.
Can this formula be reversed to convert Celsius to Fahrenheit?
The reverse formula is different: Fahrenheit = Celsius × 9/5 + 32. This converts the Celsius temperature to Fahrenheit by scaling up the degree size and then shifting the zero point to 32°F.
Is the result always exact when converting Fahrenheit to Celsius?
No, because of decimal rounding and the fractional multiplier 5/9, some results are approximations. For example, 28°F converts to about -2.2222°C, but displayed values may round to fewer decimals depending on precision.
Why does 28°F result in a negative Celsius value?
Since 28°F is below the freezing point of water (32°F), its Celsius equivalent is below 0°C, which indicates temperatures under freezing. The negative Celsius value reflects that the temperature is cold enough to be below freezing in metric scale.
Is this conversion used in scientific calculations?
Yes, converting Fahrenheit to Celsius is necessary for scientific contexts where Celsius or Kelvin scales are standard. The formula provides a straightforward way to translate temperature data between measurement systems.
