eBay Shipping Calculator

Enter the weight of your packed parcel, the box size, the shipping zone and how you buy postage. The calculator looks up the USPS Ground Advantage price for that weight and zone, checks whether dimensional weight or an oversize price applies, adds any size surcharges and packaging cost, and shows your total cost to ship. If you tell it what you charge the buyer, it also works out the eBay fee on that shipping charge and whether you make or lose money on shipping.

Ground Advantage is the USPS service most eBay sellers use for parcels up to 70 lb, and it is the cheapest option for most small and medium packages. The prices in this calculator are copied from the official USPS Notice 123 price list effective October 4, 2026. We show both the commercial price, which you get when you buy postage online through eBay labels, Pirate Ship or Shippo, and the retail price you pay at the post office counter.

Ground Advantage rates depend on three things: the weight of the parcel, the shipping zone, and whether you pay commercial or retail prices. Under the October 2026 price list, a 1 lb parcel costs $8.01 in zone 1 and $11.22 in zones 8 and 9 at commercial prices. A 5 lb parcel costs $10.35 in zone 1 and $20.24 in zone 8. The same 5 lb parcel at retail prices costs $13.75 in zone 1 and $27.45 in zone 8, which is why almost every regular seller buys postage online.

Lighter parcels are priced in ounce steps, up to 4 oz, 8 oz, 12 oz and just under 1 lb. From 1 lb upward every extra pound moves the parcel to the next price row, and anything that weighs even slightly more than a whole pound is charged as the next pound. That is why trimming a few ounces of packaging can drop a parcel into a cheaper row.

USPS updates its price list several times a year. The prices in this calculator reflect the list effective October 4, 2026. Check the date shown in the calculator result, and confirm against the latest Notice 123 on the USPS Postal Explorer site if you are quoting large orders.

A zone is a distance band between the ZIP code where you ship from and the buyer's ZIP code. Zones 1 and 2 cover roughly the first 150 miles, zone 3 covers 151 to 300 miles, zone 4 covers 301 to 600 miles, zone 5 covers 601 to 1,000 miles, zone 6 covers 1,001 to 1,400 miles, zone 7 covers 1,401 to 1,800 miles and zone 8 covers anything further. Zone 9 is for Alaska, Hawaii and US territories. USPS publishes a free zone chart that tells you the zone for any pair of ZIP codes, and eBay and shipping apps work it out automatically when you buy a label.

If you are pricing a listing for the whole country, use zone 5 as a middle estimate, then check zone 8 as your worst case. Heavy items shipped across the country can cost two to three times as much as the same item shipped locally, so the zone matters more than most new sellers expect.

USPS charges for the space a parcel takes up, not only for its weight. For Ground Advantage parcels larger than one cubic foot (1,728 cubic inches), it works out a dimensional weight: round each side up to the next inch, multiply length by width by height, divide by 139 and round up. You pay for whichever is higher, the real weight or the dimensional weight. For irregular parcels the volume is first multiplied by 0.785.

A pillow in an 18 by 14 by 10 inch box weighs almost nothing, but its volume of 2,520 cubic inches gives a dimensional weight of 19 lb. At zone 5 that is $25.54 at commercial prices, instead of about $8 to $9 for a light parcel under one cubic foot. Go over 2 cubic feet (3,456 cubic inches) and a $21 surcharge is added on top. The fix is simple: use the smallest box that protects the item. This calculator switches to dimensional weight automatically and tells you when it has done so.

If a parcel measures more than 108 inches in length plus girth (the longest side plus twice the other two sides added together) but not more than 130 inches, USPS charges a flat oversized price regardless of weight, which is $112.94 in zone 1 and $295.93 in zones 8 and 9 at commercial prices. Parcels over 130 inches cannot be sent with Ground Advantage at all.

Parcels longer than 22 inches, up to 30 inches, add $4.50. Parcels longer than 30 inches add $10. Parcels over 2 cubic feet add $21. There is also a $4.50 charge for tubes, cans and some liquids that this calculator does not include. These fees do not apply to oversized-price parcels.

eBay charges its final value fee on the total the buyer pays, including shipping. That means every dollar of shipping you collect also loses 13.6% in most categories, so a shipping charge that equals your postage cost still leaves you short. The break-even figure in this calculator accounts for that: it is the shipping charge that covers your postage, packaging and the eBay fee on the shipping itself.

Free shipping can help a listing stand out in search, but only if you raise the item price enough to cover the shipping cost plus the extra fee that comes with a higher total. A good method is to price for your most expensive likely zone, or to offer calculated shipping so each buyer pays for their own distance. Use our eBay fee calculator to see the full profit after fees.

A seller ships a 2 lb parcel in a 12 by 9 by 4 inch box to zone 5 using eBay labels at commercial prices. The box is under one cubic foot, so the actual weight applies and postage is $10.50. With $1 of packaging, the total cost to ship is $11.50. The same parcel at the post office counter would cost $14.85, so buying online saves $4.35. If the seller charges the buyer $9 for shipping, eBay takes about $1.22 of it, leaving $7.78, and the seller loses $3.72 on shipping. To break even the seller needs to charge about $13.31 for shipping, or build the difference into the item price.