Calculate USPS postage by weight and zone, then compare Ground Advantage with Priority Mail Flat Rate using the official 2026 retail tables.
Updated Jul 12, 2026 · sources on every number
Use the weight and zone inputs below to estimate the USPS services covered by FeeStrip. Ground Advantage is priced by package weight and zone; Priority Mail Flat Rate is a useful comparison when the item fits the box or envelope.
Scope: This page covers USPS Ground Advantage and Priority Mail Flat Rate retail list rates. It does not include negotiated commercial rates, insurance add-ons or every USPS service.
Shipping cost calculator
Static tables · 2026
Retail list rates. Canada Post parcels are zone-priced — Lettermail only here, Find-a-Rate for the rest.
Rounds up to the tier — 4.2 oz pays the 8 oz rate.
Zone 1–2 is local, zone 8 is coast to coast. Find yours with your carrier's zone lookup.
Result
USPS Ground Advantage
USPS Ground Advantage
$10.95
12 oz – 1 lb · zone 5
Retail rate, rounded up to the tier. Commercial and volume discounts are lower.
Source: USPS Notice 123 · Jul 12, 2026
Estimates only — always confirm with your label provider.
Inputs restore automatically for an hour · this device only, nothing is sent anywhere.
01
Compare Ground Advantage with a Priority Mail Flat Rate package when the packaging fits.
02
USPS rounds a package up to the next published weight tier, so enter the packed weight.
03
Ground Advantage varies by destination zone; use the USPS zone lookup for the destination ZIP.
04
Use the lower retail rate as a baseline, then check commercial label pricing separately.
The exact retail price depends on the destination zone. Enter 1 lb and the zone above to see the current static 2026 table entry.
Flat Rate can win when the item is dense or heavy enough that a Ground Advantage zone price would exceed the fixed package price. Compare both with the same packed item.
No. These are retail list rates. Online label providers and volume accounts can offer lower commercial prices, and those discounts are separate from the USPS retail table.
Ground Advantage uses zones to price distance. The destination ZIP and origin ZIP determine the zone; this calculator lets you enter the zone once you have looked it up.
Compare every supported carrier, service and weight tier.
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Ground Advantage and Priority Mail rates by weight and zone.
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1st, 2nd, Tracked 24 and Tracked 48 by weight.
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Cross-border postage tables for letters and parcels.
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Rates are retail list rates from the linked carrier tables. For a seller-specific estimate, pair this result with the ROAS and ACoS calculator or the profit margin calculator before setting your shipping price.