Shipment Weight Calculator

Calculate shipment weight for multiple packages

Use this when you need a quick total shipment estimate for several cartons of the same size. Enter per-carton dimensions, per-carton actual weight, quantity, and the divisor.

This is an estimate for planning and supplier communication. Your carrier, forwarder, marketplace, destination country, contract, and service level may use a different divisor, rounding rule, minimum weight, or surcharge.

What shipment weight includes

Shipment weight can mean total actual weight, total dimensional weight, or total chargeable weight depending on the quote context. A buyer usually needs all three numbers when asking a supplier, freight forwarder, or courier for a realistic estimate.

This page focuses on cartons of the same size. For mixed carton sizes, calculate each carton group separately and add the totals.

Real-world use case

You plan to ship 24 cartons from a factory in Suzhou. Each carton is 45 x 35 x 28 cm and weighs 8 kg. This calculator gives the total actual weight, total dimensional weight, and total estimated chargeable weight before you request air or express quotes.

Common mistakes

• Adding product net weight but forgetting carton, foam, insert, pallet, or packaging weight.
• Multiplying length, width, and height by carton quantity instead of calculating each carton first.
• Using one mixed shipment average when cartons have very different sizes.
• Forgetting that palletized shipments may be charged by pallet dimensions.
• Using the estimate as a final invoice amount without carrier confirmation.

When this tool is not enough

This calculator assumes each package has the same dimensions and actual weight. For mixed cartons, calculate each group separately. For pallet freight, enter pallet dimensions or use a pallet loading calculator.

Related shipping tools

Use these tools together when checking dimensions, weight, carton volume, and freight planning.

FAQ

How do I calculate shipment weight for multiple cartons?

Calculate actual and dimensional weight per carton, then multiply by the number of cartons. The billable method depends on the carrier rules.

Can I use this for mixed carton sizes?

Yes, but calculate each carton size group separately and add the totals.

Does shipment weight include packaging?

For shipping quotes, yes. Use packed carton weight, not only product net weight.