Centimeters to Inches Converter
Furniture listing says 42 cm wide, but your doorway is measured in inches. Check compatibility instantly.
Last updated: May 2026
Enter a value to see the conversion instantly.
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Measurement Scale Context
Current measurement: 1 cm — Fingernail width
How to convert
Type a centimeter value into the "From" field and see the inch equivalent instantly. The converter handles decimals, so whether you're checking a product listing (12.5 cm), a furniture dimension (120 cm shelf), or a 3D printer tolerance (0.4 mm nozzle = 0.0157 in), the result updates as you type. Use the preset buttons for common sizes, or hit swap (↔) to convert from inches back to centimeters.
Common reference values
| Centimeters | Inches | Typical use |
|---|---|---|
| 1 cm | 0.3937 in | Small part or measurement |
| 5 cm | 1.9685 in | Finger width to small hand span |
| 10 cm | 3.9370 in | Typical pencil length |
| 25 cm | 9.8425 in | Standard notebook width |
| 50 cm | 19.6850 in | Half-meter, common furniture dimension |
| 100 cm | 39.3701 in | One meter, typical door/ceiling height reference |
Understanding Centimeters and Inches
Both centimeters and inches measure length, but they belong to different systems. Centimeters are part of the metric system (used worldwide), while inches are part of the imperial system (used primarily in the USA). The conversion factor is fixed: 1 inch equals exactly 2.54 centimeters, which means 1 centimeter equals approximately 0.3937 inches.
When You'll Need This Conversion
Use this converter for: Shopping online from international sites, reading specifications from imported products, translating workshop plans or sewing patterns, checking furniture dimensions when sites mix units, comparing screen sizes and monitor specs.
Why it matters: Product listings often mix metric and imperial measurements. A quick conversion prevents ordering parts that don't fit your space or tools.
Real-World Context
- 1 cm / 0.3937 in: Roughly the width of a fingernail
- 5 cm / 1.97 in: About a finger width
- 10 cm / 3.94 in: Typical pencil length, or small hand span
- 25 cm / 9.84 in: Standard notebook or tablet width
- 50 cm / 19.69 in: Common furniture or shelf width
- 100 cm / 39.37 in: One meter, typical door or ceiling height reference
Frequently Asked Questions
What is 5 feet in centimeters?
5 feet = 60 inches = 152.4 cm. 6 feet = 72 inches = 182.88 cm. Height conversions come up often when reading international product specs or comparing clothing sizes from US brands. Use the swap button to convert cm back to inches.
Screen sizes are in inches — how do I compare with cm measurements?
Monitor and TV screens are measured diagonally in inches worldwide, even on European websites. A 27-inch monitor is 68.6 cm diagonally. When buying online, check the product page for physical dimensions (width × height), which may be listed in cm or mm separately from the diagonal inch size.
My sewing pattern is in cm but my ruler shows inches — what should I do?
Convert the key measurements once, write them down, then work entirely in one unit system for the rest of the pattern. Switching back and forth mid-project causes rounding errors that compound over many seams. For most clothing patterns, 0.5 cm (about 3/16") precision is sufficient.
Is 30 cm the same as 1 foot?
Close but not exact. 30 cm = 11.81 inches, while 1 foot = 30.48 cm. The 4.8 mm difference is negligible for rough checks but matters when cutting wood, fabric, or metal. For precise work, always use the exact value from this converter.
When should I use mm instead of cm for precision work?
Use millimeters when precision below 1 cm matters — for example, 3D printing tolerances, drill bit sizing, watch parts, or jewelry. At those scales, "5.3 cm" is ambiguous but "53 mm" is unambiguous. Use the mm-to-inch converter for those measurements.
Why do European furniture sizes differ from US sizes, even when both claim the same measurement?
European and US standards sometimes differ slightly due to manufacturing tolerances and historical practices. A European 90 cm wardrobe might have different actual depth than a US 36" cabinet, even though 90 cm ≈ 35.4". Always verify actual vs. nominal dimensions. When ordering internationally, confirm the exact physical dimensions in both systems before purchasing to ensure it fits your space.
How do I convert fractional inches (like 5 1/8") to metric?
Convert the whole number and fractional parts separately. For example, 5 1/8" = 5" + 1/8" = 12.7 cm + 0.32 cm ≈ 13 cm. Alternatively, use this converter: 5.125 inches = 13.0175 cm. For precision work (furniture, woodworking), convert once and use the metric measurement consistently to avoid rounding errors in your project.