Couriers charge the greater of actual weight and dimensional weight. If your product is light and boxy, this is where shipping quotes blow up.
Quoting a whole shipment? The Excel version calculates a full packing list of mixed cartons at once and feeds the result straight into your landed-cost sheet.
Get the ToolkitEstimates only. Divisors and rounding rules vary by carrier, service and account - verify billable weight with your carrier or forwarder before quoting customers. Your inputs never leave your browser.