80°F is equal to 26.67°C.
To convert 80 degrees Fahrenheit to Celsius, you subtract 32 from the Fahrenheit value, then multiply the result by 5/9. This process changes the temperature to its Celsius equivalent.
Conversion Tool
Result in c:
Conversion Formula
The formula to convert Fahrenheit (F) to Celsius (C) is:
C = (F – 32) × 5/9
You subtract 32 from the Fahrenheit temperature because 32°F is the freezing point of water, corresponding to 0°C. Multiplying by 5/9 scales the difference to the Celsius scale, as Celsius degrees are larger than Fahrenheit degrees. This makes the value fit the Celsius temperature range.
Example calculation for 80°F:
- Subtract 32: 80 – 32 = 48
- Multiply by 5/9: 48 × 5/9 = 26.666…
- Rounded result: 26.67°C
Conversion Example
- Convert 100°F to Celsius:
- Subtract 32: 100 – 32 = 68
- Multiply by 5/9: 68 × 5/9 ≈ 37.78
- Result: 37.78°C
- Convert 50°F to Celsius:
- Subtract 32: 50 – 32 = 18
- Multiply by 5/9: 18 × 5/9 = 10
- Result: 10°C
- Convert 70°F to Celsius:
- Subtract 32: 70 – 32 = 38
- Multiply by 5/9: 38 × 5/9 ≈ 21.11
- Result: 21.11°C
- Convert 90°F to Celsius:
- Subtract 32: 90 – 32 = 58
- Multiply by 5/9: 58 × 5/9 ≈ 32.22
- Result: 32.22°C
Conversion Chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 55.0 | 12.78 |
| 60.0 | 15.56 |
| 65.0 | 18.33 |
| 70.0 | 21.11 |
| 75.0 | 23.89 |
| 80.0 | 26.67 |
| 85.0 | 29.44 |
| 90.0 | 32.22 |
| 95.0 | 35.00 |
| 100.0 | 37.78 |
| 105.0 | 40.56 |
This chart helps by giving quick reference points between Fahrenheit and Celsius. You can find the Fahrenheit value closest to your temperature, then read across to see the corresponding Celsius value. Useful when no calculator is nearby.
Related Conversion Questions
- What is 80 degrees Fahrenheit in Celsius with decimals?
- How do you convert 80°F to °C manually?
- Is 80 Fahrenheit hotter than 25 Celsius?
- What Celsius temperature equals 80°F exactly?
- How much colder is 80°F than 30°C in Celsius?
- Can you show the step-by-step conversion of 80°F to Celsius?
- What formula should I use to turn 80 degrees F into Celsius?
Conversion Definitions
F (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 the United States and its territories. The scale divides the interval between these points into 180 equal parts called degrees.
C (Celsius): Celsius is a temperature scale based on the metric system where water freezes at 0 degrees and boils at 100 degrees at sea level. It’s widely adopted worldwide for scientific and everyday use. The scale divides this range into 100 equal parts, degrees Celsius.
Conversion FAQs
Why do we subtract 32 in the Fahrenheit to Celsius formula?
Subtracting 32 adjusts the Fahrenheit temperature so it’s relative to the freezing point of water, which is 32°F. This step resets the zero point to align with 0°C before scaling the temperature difference with 5/9. Without subtracting 32, the conversion wouldn’t adjust for the offset between the scales.
Can I convert Fahrenheit to Celsius without a calculator?
Yes, you can estimate the conversion by approximating the subtraction and multiplication mentally. For example, subtract 30 instead of 32 and multiply by 0.5 to get a rough Celsius value. However, this is less accurate and should be used only for quick estimates.
Does the conversion formula work for all Fahrenheit temperatures?
The formula works for any temperature in Fahrenheit, whether below freezing or above boiling. It converts the value to Celsius by applying the same offset and scaling, so negative temperatures or very high values convert correctly.
Why is the multiplying factor 5/9 in the formula?
Because the size of one degree Celsius is larger than one degree Fahrenheit. The Fahrenheit scale divides the range between freezing and boiling into 180 parts, Celsius into 100. The fraction 5/9 adjusts the Fahrenheit difference to match the Celsius scale size.
What is the difference between converting Celsius to Fahrenheit and Fahrenheit to Celsius?
Converting Celsius to Fahrenheit uses a different formula: multiply by 9/5 and then add 32. This process reverses the offset and scale change used when going from Fahrenheit to Celsius, reflecting the different zero points and degree sizes in each scale.