Practical measurement guide
Common Product Dimensions in CM and Inches
Convert product length, width, and height between cm and inches for listings, packaging, furniture, and fit checks.
Convert each product side separately so length, width, and height stay accurate.
in
Decimals and fractions work, for example 1.5, 1/2, or 1 1/2.
cm
Fractions
20 in = 50.8 cm
20 in × 2.54 = 50.8 cm
Decimal inches20 in
Feet + inches1 ft 8 in
Nearest 1/16 inch20"
Read dimension order carefully
Product dimensions may be listed as length × width × height, but some sellers use width × depth × height. Confirm labels before converting.
Convert each side separately
For a 10 × 20 × 30 cm product, convert each number to inches rather than converting the total. This keeps fit checks accurate.
Related measurement tools
Frequently asked questions
Should I convert all product dimensions separately?
Yes. Convert length, width, and height one by one.
What order are product dimensions listed in?
Often length × width × height, but sellers vary, so check the labels.