Unit Converter
Convert length, weight, temperature, and volume units for cross-border shipping and product listings.
1 inch = 2.54 cm1 foot = 30.48 cm1 yard = 91.44 cm1 cm = 10 mm
Convert length, weight, temperature, and volume units for cross-border shipping and product listings.
Select the unit type
Choose the type of unit to convert: length, weight, temperature, volume, or area.
Choose input and output units
Select your source unit (e.g., inches) and target unit (e.g., centimeters).
Enter the value to convert
Type the number you want to convert. The result updates instantly.
Use the result in your listing or documents
Copy the converted value into your product listing, shipping documents, or customer response.
The US uses the imperial system (inches, lbs, °F) while most of the world uses metric (cm, kg, °C). When selling on Amazon.com, you write product dimensions in inches and weight in lbs. When sourcing from China or selling on European marketplaces, you need metric equivalents.
Chinese suppliers typically quote product dimensions in millimeters (mm) or centimeters (cm) and weight in kilograms (kg). Convert these to inches and pounds for Amazon.com listings. 1 inch = 25.4mm, 1 pound = 0.454kg.
Amazon Seller Central uses inches and pounds for listings in the US marketplace. For UK/EU marketplaces (Amazon.co.uk, Amazon.de), dimensions are in cm and weight in kg. If you are selling across both, you will need to convert your product measurements for each marketplace.
Product temperature specifications (operating range, storage conditions, cooking temperatures) need to match the target market. US buyers expect °F; most of the world uses °C. For appliances, outdoor gear, and food products, incorrect temperature units cause customer confusion and returns.