Inches ↔ Centimeters Converter
Convert between inches and centimeters instantly
Conversion Result
12 inches = 30.48 cm
1 foot • 0.3048 meters • 304.8 mm
📚 Inches ↔ Centimeters Conversion Details
Inches to CM Formula
centimeters = inches × 2.54
To convert inches to centimeters, multiply the inches by 2.54.
CM to Inches Formula
inches = centimeters ÷ 2.54
To convert centimeters to inches, divide the centimeters by 2.54.
Bidirectional Conversion
This converter works both ways simultaneously:
- Type in inches → cm updates automatically
- Type in cm → inches updates automatically
- No buttons to click - works as you type
Common Uses
- Height measurement
- Screen and TV sizes
- Clothing measurements
- DIY and construction
📏 How This Converter Works
This is a bidirectional converter that works in real-time:
- Inches → Centimeters: When you type in the inches field, the cm field automatically updates
- Centimeters → Inches: When you type in the cm field, the inches field automatically updates
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
// Bidirectional Conversion Logic:
centimeters = inches × 2.54
inches = centimeters ÷ 2.54
// Example 1: Type "12" in inches
cm = 12 × 2.54 = 30.48
// Example 2: Type "50" in cm
inches = 50 ÷ 2.54 = 19.685
centimeters = inches × 2.54
inches = centimeters ÷ 2.54
// Example 1: Type "12" in inches
cm = 12 × 2.54 = 30.48
// Example 2: Type "50" in cm
inches = 50 ÷ 2.54 = 19.685
📊 Conversion Table
| Inches | Centimeters | Common Usage |
|---|---|---|
| 1" | 2.54 cm | Small measurements |
| 6" | 15.24 cm | Mobile phones |
| 12" | 30.48 cm | Ruler length |
| 24" | 60.96 cm | Monitor size |
| 36" | 91.44 cm | TV size |
| 60" | 152.4 cm | Person height |
❓ Frequently Asked Questions
Q: How many centimeters are in one inch?
A: There are exactly 2.54 centimeters in one inch.
Q: How does the bidirectional conversion work?
A: Both input fields work simultaneously. When you change the inches value, cm updates automatically. When you change the cm value, inches updates automatically.
Q: Do I need to click any button to convert?
A: No! The conversion happens automatically as you type in either field.
Q: Why is 2.54 used for conversion?
A: 2.54 is the exact conversion factor defined in the international yard and pound agreement of 1959.