Convert Celsius to Fahrenheit
Accurate temperature conversion between Celsius and Fahrenheit scales
Temperature Converter
Conversion Formula
Celsius to Fahrenheit
°F = (°C × 9/5) + 32
Example: 0°C = (0 × 9/5) + 32 = 32°F
Fahrenheit to Celsius
°C = (°F - 32) × 5/9
Example: 32°F = (32 - 32) × 5/9 = 0°C
Celsius (°C)
Celsius is a temperature scale where 0°C is the freezing point of water and 100°C is the boiling point of water at standard atmospheric pressure. It's the most widely used temperature scale globally and is part of the metric system.
- Freezing point of water: 0°C
- Boiling point of water: 100°C
- Absolute zero: -273.15°C
- Normal body temperature: 37°C
Fahrenheit (°F)
Fahrenheit is a temperature scale where 32°F is the freezing point of water and 212°F is the boiling point of water at standard atmospheric pressure. It's primarily used in the United States and some Caribbean countries.
- Freezing point of water: 32°F
- Boiling point of water: 212°F
- Absolute zero: -459.67°F
- Normal body temperature: 98.6°F
Common Temperature Conversions
| Celsius (°C) | Fahrenheit (°F) | Description |
|---|---|---|
| -273.15 | -459.67 | Absolute zero |
| -40 | -40 | Equal point |
| -18 | 0 | Very cold winter day |
| 0 | 32 | Freezing point of water |
| 10 | 50 | Cool day |
| 20 | 68 | Room temperature |
| 25 | 77 | Warm room temperature |
| 30 | 86 | Hot day |
| 37 | 98.6 | Normal body temperature |
| 100 | 212 | Boiling point of water |
Frequently Asked Questions
Why is the Celsius to Fahrenheit conversion not linear?
Unlike simple unit conversions that only require multiplication, temperature conversions involve both scaling and shifting because the zero points of the scales are different. Celsius is based on water's freezing/boiling points, while Fahrenheit has different reference points.
What's the easiest way to estimate Celsius to Fahrenheit?
A quick approximation is to double the Celsius temperature and add 30. For example, 20°C ≈ (20×2) + 30 = 70°F (actual: 68°F). This works well for everyday temperatures.
At what temperature are Celsius and Fahrenheit equal?
-40°C equals -40°F. This is the only point where both scales show the same numerical value.
Which countries use Fahrenheit?
Only the United States, Liberia, and Myanmar officially use Fahrenheit. Most of the world uses Celsius as part of the metric system.
How accurate is this temperature converter?
Our converter provides precise calculations using the standard conversion formulas. Results are accurate for all practical and scientific applications.