Inches to CM Dimensions Converter
Convert length, width, and height from inches to centimeters for products, boxes, luggage, furniture, and packaging.
How to convert L x W x H inches to cm
Multiply each dimension by exactly 2.54. Do not multiply the three sides together unless you specifically need volume; for fitting, shopping, and product specs, the side-by-side dimensions are usually what matter.
Choose length, 2D, or 3D dimensions
Product listings do not always use the same format. Keep the original order and convert only the sides that matter for the task.
| Format | Best use |
|---|---|
| Length only | Use the main inches to cm converter when the source is a single side, diameter, depth, or straight measurement. |
| Length x width | Use two sides for flat items such as frames, prints, mats, screens, signs, boards, or tablet cases. |
| Length x width x height | Use all three sides for boxes, luggage, furniture, shelves, packages, and storage bins. |
Common dimension examples
| Inches | Centimeters | Use case |
|---|---|---|
| 8 x 10 in | 20.32 x 25.4 cm | Photo print, frame, paper, or small flat panel. |
| 11 x 17 in | 27.94 x 43.18 cm | Tabloid paper, poster, sign, or print layout. |
| 22 x 14 x 9 in | 55.88 x 35.56 x 22.86 cm | Common carry-on luggage size class. |
| 12 x 8 x 4 in | 30.48 x 20.32 x 10.16 cm | Small shipping box or product package. |
| 36 x 18 x 72 in | 91.44 x 45.72 x 182.88 cm | Furniture, shelving, or cabinet-style dimensions. |
Who this page is for
- Shoppers comparing US product dimensions with metric product specs.
- People checking whether luggage, boxes, furniture, shelves, or storage bins will fit.
- Sellers and students who need length, width, and height in centimeters without changing the original dimension order.
Related tools
For the exact inch definition, see the conversion methodology.
Frequently asked questions
How do I convert product dimensions from inches to cm?
Convert each side separately by multiplying length, width, and height in inches by exactly 2.54.
Does this dimensions converter calculate volume?
No. It converts the three linear dimensions only. It does not calculate cubic inches, cubic centimeters, or volume.
What is 22 x 14 x 9 inches in cm?
22 x 14 x 9 inches equals 55.88 x 35.56 x 22.86 cm.
Should I add extra space when checking whether an item fits?
Yes. Leave clearance for handles, packaging, cables, doors, fabric thickness, and measurement tolerance.
Can I use this for length x width only?
Yes. Enter 0 for height when you only need a flat length x width conversion, or convert the two sides manually with the same 2.54 factor.