Free eBay Shipping Calculator
Estimate shipping costs across USPS, UPS, and FedEx. Compare rates and find the best deal for your items.
Package Details
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Estimated Rates
Enter package details and click Calculate to see rates.
Understanding Dimensional Weight
Carriers charge based on the greater of actual weight or dimensional weight (also called DIM weight). This means large, lightweight packages may cost more than you expect based on weight alone.
DIM Weight Formula
Dimensional Weight = (Length x Width x Height) / 139
All measurements in inches. The divisor 139 is the standard DIM factor used by USPS, UPS, and FedEx.
Tips for eBay Sellers
- Use the smallest box possible to minimize DIM weight charges.
- Consider poly mailers for soft goods -- they have no DIM weight.
- USPS Priority Mail Flat Rate boxes ignore weight -- great for heavy items.
- Always round up weight to the next pound when setting shipping in eBay.
- Compare rates across carriers -- the cheapest option changes based on weight and distance.
Let AI handle your shipping estimates
FlowLister estimates shipping weight from your photos -- no scale needed.