Celsius to Fahrenheit Converter
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Formula: (°C × 9/5) + 32 = °F
How to convert Celsius to Fahrenheit
To convert Celsius to Fahrenheit, multiply by 9/5 (or 1.8) and then add 32. Formula: °F = (°C × 1.8) + 32. For example, 100°C = (100 × 1.8) + 32 = 212°F.
A quick mental estimate: double the Celsius temperature and add 30. So 20°C ≈ (20 × 2) + 30 = 70°F. The actual answer is 68°F — close enough for everyday use.
Celsius is the everyday temperature standard used in most countries worldwide. Fahrenheit is used primarily in the United States for weather, cooking, and everyday temperatures. Kelvin is used in science and starts at absolute zero (−273.15°C).
Celsius to Fahrenheit conversion table
| Celsius (°C) | Fahrenheit (°F) | Description |
|---|---|---|
| −40°C | −40°F | Scales are equal |
| −20°C | −4°F | Very cold winter |
| 0°C | 32°F | Freezing point of water |
| 10°C | 50°F | Cool day |
| 20°C | 68°F | Room temperature |
| 25°C | 77°F | Warm day |
| 30°C | 86°F | Hot day |
| 37°C | 98.6°F | Normal body temperature |
| 40°C | 104°F | High fever |
| 100°C | 212°F | Boiling point of water |
| 180°C | 356°F | Moderate oven |
| 200°C | 392°F | Hot oven |