Package Size Converter
Convert package dimensions and weight
Enter package length, width, height and weight to convert between metric and US units. Useful for shipping, online selling, storage, product listings and box size planning.
Enter package details
Use the dimensions shown on your box, product listing, shipping label or package.
Result
Dimensions in inches
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Dimensions in centimeters
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Actual weight
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Estimated dimensional weight
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Estimated billable weight
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Practical meaning
Enter package details to see a practical explanation.
Common package size examples
| Metric size | Approx inches | Example weight | Example use |
|---|---|---|---|
| 20 × 15 × 10 cm | 7.87 × 5.91 × 3.94 in | 0.5 kg / 1.10 lb | Small parcel or accessory box |
| 30 × 20 × 10 cm | 11.81 × 7.87 × 3.94 in | 1 kg / 2.20 lb | Tablet box or small product package |
| 40 × 30 × 20 cm | 15.75 × 11.81 × 7.87 in | 2 kg / 4.41 lb | Medium box or backpack package |
| 55 × 40 × 20 cm | 21.65 × 15.75 × 7.87 in | 7 kg / 15.43 lb | Carry-on style package size |
How it helps
Understand package size before shipping
Package dimensions may be shown in centimeters or inches depending on the seller, marketplace, carrier or country. This converter helps you quickly compare package size and actual weight in familiar units.
The dimensional weight estimate is useful when a large lightweight package may cost more than its actual weight suggests. Always confirm the final charge with the shipping carrier before purchasing postage or quoting a customer.
FAQ
Package size converter questions
What does the package size converter do?
This package size converter converts package length, width and height between centimeters, millimeters, meters, inches and feet. It also converts weight between kilograms, grams, pounds and ounces.
Can I use this for shipping packages?
Yes. You can use it to understand package dimensions and weight before shipping, selling online or comparing box sizes. Always verify final shipping cost with your carrier.
What is dimensional weight?
Dimensional weight is an estimated shipping weight based on package volume. Some carriers charge based on the greater of actual weight and dimensional weight.
Is the shipping weight estimate official?
No. The dimensional weight and billable weight shown here are general estimates. Shipping carriers may use different rules, divisors, rounding and service-specific pricing.
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