25 degrees Fahrenheit is approximately -3.8889 degrees Celsius.
To convert 25°F to Celsius, subtract 32 from 25, then multiply the result by 5/9. This changes the Fahrenheit temperature to the Celsius scale, which measures temperature differently.
Conversion Tool
Result in celsius:
Conversion Formula
The formula to convert Fahrenheit to Celsius is C = (F - 32) × 5/9. First, you subtract 32 from the Fahrenheit value to adjust for the freezing point difference between the two scales. Then, multiply the result by five ninths because each degree Fahrenheit is smaller than a degree Celsius by this ratio.
For example, converting 25°F:
- Subtract 32: 25 – 32 = -7
- Multiply by 5/9: -7 × 5/9 ≈ -3.8889
- So, 25°F equals about -3.8889°C
Conversion Example
Let’s convert 77°F to Celsius step-by-step:
- Subtract 32 from 77: 77 – 32 = 45
- Multiply 45 by 5/9: 45 × 5/9 = 25
- Therefore, 77°F equals 25°C
Another example, 0°F:
- 0 – 32 = -32
- -32 × 5/9 ≈ -17.7778
- So, 0°F is about -17.7778°C
And converting 100°F:
- 100 – 32 = 68
- 68 × 5/9 ≈ 37.7778
- Thus, 100°F equals approximately 37.7778°C
Conversion Chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 0.0 | -17.7778 |
| 5.0 | -15.0000 |
| 10.0 | -12.2222 |
| 15.0 | -9.4444 |
| 20.0 | -6.6667 |
| 25.0 | -3.8889 |
| 30.0 | -1.1111 |
| 35.0 | 1.6667 |
| 40.0 | 4.4444 |
| 45.0 | 7.2222 |
| 50.0 | 10.0000 |
The chart shows Fahrenheit values in the left column and their Celsius equivalents on the right. To find the Celsius temperature for any Fahrenheit value within this range, look across the table rows.
Related Conversion Questions
- What is 25 degrees Fahrenheit in Celsius without a calculator?
- How cold is 25°F compared to Celsius temperatures?
- Can you convert 25°F to Celsius using mental math?
- Is 25 degrees Fahrenheit above or below freezing in Celsius?
- What’s the Celsius equivalent of 25 degrees Fahrenheit in weather reports?
- How do I convert 25°F to Celsius for cooking recipes?
- Does 25°F equal negative Celsius degrees or positive?
Conversion Definitions
f: Fahrenheit is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric pressure. It is mainly used in the United States and some Caribbean countries. The scale divides the interval into 180 equal parts called degrees Fahrenheit.
celsius: Celsius, also called centigrade, is a temperature scale based on 0 degrees for the freezing point of water and 100 degrees for its boiling point at sea level. It is widely used internationally for scientific and everyday temperature measurements, especially in countries using the metric system.
Conversion FAQs
Why does the formula subtract 32 from the Fahrenheit value?
The Fahrenheit scale sets the freezing point of water at 32 degrees, while Celsius sets it at 0. Subtracting 32 adjusts the Fahrenheit value to a scale starting at zero for freezing, aligning it with Celsius before converting the degree size difference.
Can the Fahrenheit to Celsius conversion be reversed easily?
Yes, reversing the conversion uses the formula F = C × 9/5 + 32. This multiplies Celsius by 9/5 to match the Fahrenheit degree size, then adds 32 to reset the freezing point difference. Both formulas reflect the linear relationship between the scales.
Is 25°F considered cold in Celsius terms?
Since 25°F converts to about -3.9°C, it’s below freezing, so it would be considered cold in Celsius terms. Temperatures below 0°C often mean freezing conditions, which can affect weather, water state, and human comfort.
Why use 5/9 in the conversion formula?
The fraction 5/9 represents the ratio between size of one Celsius degree and one Fahrenheit degree. Because there are 180 Fahrenheit degrees between freezing and boiling points, and 100 Celsius degrees, each Celsius degree equals 9/5 Fahrenheit degrees.
Does the formula work for negative Fahrenheit values?
The formula works for all Fahrenheit temperatures, including negatives. Subtracting 32 and multiplying by 5/9 correctly converts any Fahrenheit value to Celsius, whether above or below freezing. Negative Fahrenheit values convert to even colder Celsius temperatures.
