CM to Inches Converter — Quick Conversion Table & Formula
Convert centimeters to inches instantly. Common conversions for height, screen sizes, and measurements. 1 cm = 0.3937 inches.
Centimeters to inches is the single most searched unit conversion on the internet — because the world is split between metric and imperial, and height measurements, screen sizes, and product dimensions constantly need translating.
1 cm = 0.3937 inches | 1 inch = 2.54 cmThe CalcHub CM to Inches Converter handles any value instantly.
Quick Conversion Table
| CM | Inches | CM | Inches |
|---|---|---|---|
| 1 | 0.39 | 60 | 23.62 |
| 2 | 0.79 | 70 | 27.56 |
| 5 | 1.97 | 80 | 31.50 |
| 10 | 3.94 | 90 | 35.43 |
| 15 | 5.91 | 100 | 39.37 |
| 20 | 7.87 | 120 | 47.24 |
| 25 | 9.84 | 150 | 59.06 |
| 30 | 11.81 | 180 | 70.87 |
| 40 | 15.75 | 200 | 78.74 |
| 50 | 19.69 | 300 | 118.11 |
Height Conversion (Most Searched)
| Height (cm) | Height (ft'in") | Height (cm) | Height (ft'in") |
|---|---|---|---|
| 150 | 4'11" | 172 | 5'8" |
| 152 | 5'0" | 175 | 5'9" |
| 155 | 5'1" | 178 | 5'10" |
| 157 | 5'2" | 180 | 5'11" |
| 160 | 5'3" | 183 | 6'0" |
| 163 | 5'4" | 185 | 6'1" |
| 165 | 5'5" | 188 | 6'2" |
| 168 | 5'6" | 190 | 6'3" |
| 170 | 5'7" | 193 | 6'4" |
Screen Sizes
TV and monitor sizes are measured diagonally in inches:
| Screen (inches) | Diagonal (cm) | Width 16:9 (cm) | Height 16:9 (cm) |
|---|---|---|---|
| 24" | 61 cm | 53 × 30 cm | |
| 27" | 69 cm | 60 × 34 cm | |
| 32" | 81 cm | 71 × 40 cm | |
| 43" | 109 cm | 95 × 54 cm | |
| 50" | 127 cm | 111 × 62 cm | |
| 55" | 140 cm | 122 × 69 cm | |
| 65" | 165 cm | 144 × 81 cm | |
| 75" | 191 cm | 166 × 94 cm |
Common Product Measurements
| Item | CM | Inches |
|---|---|---|
| Standard paper (A4) width | 21 cm | 8.27" |
| Standard paper (A4) height | 29.7 cm | 11.69" |
| US Letter width | 21.6 cm | 8.5" |
| US Letter height | 27.9 cm | 11" |
| Credit card length | 8.6 cm | 3.37" |
| iPhone 15 Pro height | 14.7 cm | 5.77" |
| Standard door width | 91.4 cm | 36" |
The Formula Both Ways
CM to Inches: Inches = CM × 0.3937 (or CM ÷ 2.54) Inches to CM: CM = Inches × 2.54 Why 2.54? In 1959, the international yard and pound agreement defined 1 inch as exactly 25.4 millimeters (2.54 cm). This is an exact definition, not an approximation.Why does the world use two different systems?
The metric system (cm) was developed in France in the 1790s for scientific precision. The imperial system (inches) evolved from older English units. Most of the world adopted metric; the US, Liberia, and Myanmar haven't fully switched. This creates the endless need for conversion.
Is 1 cm exactly 0.3937 inches?
More precisely, 1 cm = 0.393700787... inches (repeating). For practical purposes, 0.3937 or even 0.39 is accurate enough. The exact relationship is 1 inch = 2.54 cm (exact by definition).
How do I convert cm to feet and inches?
Divide total cm by 2.54 to get total inches. Then divide by 12 for feet with remainder as inches. Example: 175 cm ÷ 2.54 = 68.9 inches ÷ 12 = 5 feet 8.9 inches ≈ 5'9".
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