Celsius to Fahrenheit Converter (°C to °F) + Formula & Table
Celsius to Fahrenheit Converter (°C to °F)
This page explains how to convert temperatures from Celsius (°C) to Fahrenheit (°F) using the official conversion formula. It’s useful for weather, travel, cooking, science, and everyday temperature comparisons.
✅ Celsius to Fahrenheit Formula
°F = (°C × 9/5) + 32
This is the exact formula used for temperature conversion between the Celsius and Fahrenheit scales.
Instant Converter
Quick Conversion Table
| Celsius (°C) | Fahrenheit (°F) | Reference |
|---|---|---|
| -40 | -40 | Same on both scales |
| -10 | 14 | Cold winter weather |
| 0 | 32 | Water freezes |
| 10 | 50 | Cool day |
| 20 | 68 | Room temperature |
| 25 | 77 | Warm day |
| 30 | 86 | Hot day |
| 37 | 98.6 | Normal body temperature |
| 100 | 212 | Water boils (sea level) |
Worked Examples
- 20°C to °F: (20 × 9/5) + 32 = 68°F
- 0°C to °F: (0 × 9/5) + 32 = 32°F
- -10°C to °F: (-10 × 9/5) + 32 = 14°F
Frequently Asked Questions
Why are Celsius and Fahrenheit different?
Celsius is based on water freezing at 0°C and boiling at 100°C, making it convenient for science and weather. Fahrenheit uses different reference points, with water freezing at 32°F and boiling at 212°F.
Is there a quick mental shortcut?
A rough estimate is (°C × 2) + 30. This works reasonably well for everyday weather but is not exact.
Does water always boil at 100°C?
Only at sea level. At higher altitudes, water boils at lower temperatures due to reduced air pressure.
Disclaimer: This page provides general reference information only. While the conversion formula shown is accurate, results may vary due to rounding or context. Do not rely on this information for medical, engineering, safety-critical, or regulated use. Always verify measurements using appropriate tools and official sources.