How it works
Use the six-column format shown in the workspace. ShippingMath calculates every valid row locally, highlights packages controlled by volume and totals the estimated empty-space weight.
Download the audited rows for packaging review. Customer addresses, names and order details are not required and should not be included in the file.
Planning estimate: carrier rules, service thresholds, contracts and measurement methods can change. Confirm the current rule before buying a label or quoting a customer.