Celsius to Fahrenheit Converter
Convert Celsius (°C) to Fahrenheit (°F) instantly. 0°C = 32.0°F (freezing point of water).
0°C = 32.0°F
Celsius to Fahrenheit Conversion Table
| Celsius (°C) | Fahrenheit (°F) | Description |
|---|---|---|
| -40°C | -40°F | Extremely cold (same on both scales) |
| 0°C | 32°F | Water freezes |
| 10°C | 50°F | Cool weather |
| 20°C | 68°F | Room temperature |
| 37°C | 98.6°F | Body temperature |
| 100°C | 212°F | Water boils |
How to Convert Celsius to Fahrenheit
The formula to convert Celsius to Fahrenheit is:
°F = (°C × 9/5) + 32
or: °F = (°C × 1.8) + 32
Step-by-Step Example
Converting 25°C to Fahrenheit:
- Multiply 25 by 9/5 (or 1.8): 25 × 1.8 = 45
- Add 32: 45 + 32 = 77
- Result: 25°C = 77°F
Quick Mental Math Trick
For a rough estimate, double the Celsius temperature and add 30. For example:
- 20°C: (20 × 2) + 30 = 70°F (actual: 68°F)
- 30°C: (30 × 2) + 30 = 90°F (actual: 86°F)
When You Need This Conversion
- Traveling to the United States from metric countries
- Following American recipes with oven temperatures
- Understanding US weather forecasts
- Reading medical information from US sources
- Scientific work requiring both scales
History of Temperature Scales
Celsius: Named after Swedish astronomer Anders Celsius (1701-1744). Originally, he set 0° as boiling and 100° as freezing, but this was later reversed. Used by most countries worldwide and in scientific contexts.
Fahrenheit: Named after German physicist Daniel Gabriel Fahrenheit (1686-1736). He set 0°F as the coldest temperature he could create (ice, water, and salt mixture) and 96°F as human body temperature (later refined to 98.6°F).
Frequently Asked Questions
What is 0 degrees Celsius in Fahrenheit?
0 degrees Celsius is equal to 32 degrees Fahrenheit. This is the freezing point of water.
How do I convert Celsius to Fahrenheit?
To convert Celsius to Fahrenheit, multiply the temperature by 9/5 (or 1.8) and then add 32. Formula: °F = (°C × 9/5) + 32.
What is 100°C in Fahrenheit?
100°C is equal to 212°F. This is the boiling point of water at sea level.
What is normal body temperature in Fahrenheit?
Normal body temperature is 37°C, which equals 98.6°F.
At what temperature are Celsius and Fahrenheit the same?
-40 is the only temperature that is the same in both Celsius and Fahrenheit. -40°C = -40°F.