Celsius ↔ Fahrenheit Converter
Convert between Celsius and Fahrenheit instantly
📚 Celsius ↔ Fahrenheit Conversion Details
Celsius to Fahrenheit Formula
To convert Celsius to Fahrenheit: multiply by 9, divide by 5, then add 32.
Fahrenheit to Celsius Formula
To convert Fahrenheit to Celsius: subtract 32, multiply by 5, then divide by 9.
Bidirectional Conversion
This converter works both ways simultaneously:
- Type in Celsius → Fahrenheit updates automatically
- Type in Fahrenheit → Celsius updates automatically
- No buttons to click - works as you type
Common Temperature Points
- Water freezes: 0°C = 32°F
- Human body: 37°C = 98.6°F
- Water boils: 100°C = 212°F
- Same value: -40°C = -40°F
🌡️ How This Converter Works
This is a bidirectional converter that works in real-time:
- Celsius → Fahrenheit: When you type in the Celsius field, the Fahrenheit field automatically updates
- Fahrenheit → Celsius: When you type in the Fahrenheit field, the Celsius field automatically updates
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
°F = (°C × 9/5) + 32
°C = (°F - 32) × 5/9
// Example 1: Convert 20°C
°F = (20 × 9/5) + 32
°F = 36 + 32 = 68°F
// Example 2: Convert 68°F
°C = (68 - 32) × 5/9
°C = 36 × 5/9 = 20°C
📊 Temperature Conversion Table
| Celsius (°C) | Fahrenheit (°F) | Description |
|---|---|---|
| -40°C | -40°F | Extremely cold |
| 0°C | 32°F | Water freezes |
| 10°C | 50°F | Cool day |
| 20°C | 68°F | Room temperature |
| 30°C | 86°F | Warm day |
| 37°C | 98.6°F | Human body temperature |
| 100°C | 212°F | Water boils |
❓ Frequently Asked Questions
A: Both input fields work simultaneously. When you change the Celsius value, Fahrenheit updates automatically. When you change the Fahrenheit value, Celsius updates automatically. No swap button needed.
A: °F = (°C × 9/5) + 32. Multiply Celsius by 9/5, then add 32.
A: -40°C = -40°F. This is the only temperature where both scales have the same value.
A: Approximately 37°C (98.6°F).
A: No! The conversion happens automatically as you type in either field.