Celsius to Fahrenheit Converter
📚 Examples, Formula, and How To
📝 Celsius to Fahrenheit Formula
Celsius to Fahrenheit
°F = (°C × 9/5) + 32To convert Celsius to Fahrenheit, multiply the Celsius temperature by 9/5 (or 1.8) and then add 32.
Fahrenheit to Celsius
°C = (°F - 32) × 5/9To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then multiply by 5/9 (or 0.5556).
💡 Converting Celsius to Fahrenheit
Example 1
Convert: 25°C to Fahrenheit
Start with the conversion formula: °F = (°C × 9/5) + 32
Substitute the value: °F = (25 × 9/5) + 32
Calculate: °F = (25 × 1.8) + 32 = 45 + 32 = 77
Example 2
Convert: 100°F to Celsius
Start with the conversion formula: °C = (°F - 32) × 5/9
Substitute the value: °C = (100 - 32) × 5/9
Calculate: °C = 68 × 5/9 = 37.78
Example 3
Convert: 0°C to Fahrenheit
Start with the conversion formula: °F = (°C × 9/5) + 32
Substitute the value: °F = (0 × 9/5) + 32
Calculate: °F = 0 + 32 = 32
📊 Celsius to Fahrenheit Conversion Table
Common Celsius to Fahrenheit Conversions
| Celsius | Fahrenheit |
|---|---|
| -40°C | -40°F |
| -18°C | 0°F |
| 0°C | 32°F |
| 10°C | 50°F |
| 20°C | 68°F |
| 25°C | 77°F |
| 30°C | 86°F |
| 37°C | 98.6°F |
| 40°C | 104°F |
| 50°C | 122°F |
| 100°C | 212°F |
All values are rounded to 4 decimal places for practical use
⚙️ How to Convert Celsius to Fahrenheit
Temperature Conversion Formula
Use °F = (°C × 9/5) + 32 to convert Celsius to Fahrenheit, or °C = (°F - 32) × 5/9 for the reverse
These formulas account for the different zero points and scale intervals.
Common Applications
Essential for weather, cooking, scientific measurements, and international travel
Used for weather forecasts, oven temperatures, and medical thermometers worldwide.
📚 What are Celsius and Fahrenheit?
📏 Celsius(°C)
Definition:
Celsius is a temperature scale where 0°C is the freezing point of water and 100°C is the boiling point at standard atmospheric pressure.
History:
Created by Swedish astronomer Anders Celsius in 1742. Originally, he set 0° as boiling and 100° as freezing, but this was later reversed.
Common Uses:
- Weather forecasts worldwide (except US)
- Scientific and medical measurements
- Cooking temperatures in most countries
- Industrial and engineering applications
- Laboratory and research work
Fun Fact:
The original Celsius scale was actually upside down! Anders Celsius set 100° as the freezing point and 0° as boiling. It wasn't until after his death that other scientists flipped it to the scale we use today.
📏 Fahrenheit(°F)
Definition:
Fahrenheit is a temperature scale where 32°F is the freezing point of water and 212°F is the boiling point at standard atmospheric pressure.
History:
Developed by German physicist Daniel Gabriel Fahrenheit in 1724. He originally used the freezing point of brine as 0°F.
Common Uses:
- Weather forecasts in the United States
- Medical thermometers in the US
- Oven and cooking temperatures in America
- HVAC systems in North America
- Some industrial applications in the US
Fun Fact:
Fahrenheit originally set 0°F as the lowest temperature he could achieve with a mixture of ice, water, and salt. He set 96°F as human body temperature (later adjusted to 98.6°F). Only 5 countries still primarily use Fahrenheit: US, Bahamas, Belize, Cayman Islands, and Palau!