US shipping cost calculator

USPS Ground Advantage (Notice 123, Jul 12, 2026), Priority Flat Rate, and FedEx Ground list rates — plus Royal Mail 1st/2nd Class and Tracked 24/48, Canada Post Lettermail to 500 g, and AusPost letters, Parcel Post and prepaid satchels. Canada Post parcels are zone-priced and excluded; UPS static tables aren't published the same way, so UPS isn't included yet.

Ground rates scale with distance. Zone 1–2 is local, zone 8 is coast to coast, and every zone in between sits somewhere in the price curve. The zone lookup on your carrier's site or label provider tells you the exact zone for a destination ZIP.

Both USPS and FedEx round up to the next rate point. A 4.2 oz envelope pays the 8 oz rate, and a 1.1 lb box pays the 2 lb rate. This calculator rounds the same way — what you see is what the counter would charge.

FedEx Ground shows the $6.45 residential delivery surcharge when you toggle it on; commercial addresses skip it. Fuel surcharges move weekly and are not in static tables. USPS rates never include fuel surcharges — postal rates are set by the Postal Regulatory Commission.

Carriers charge the greater of actual weight and dimensional weight. FedEx uses the length×width×height ÷ 139 formula. A big, light box — like a pillow or poster — can bill at a much higher DIM weight than its scale weight, which is why oversized light items are costly to ship.

No. These are retail list rates. Pirate Ship, ShipStation, Shippo and similar providers get commercial rates that are typically 20–40% cheaper than the counter price. Use this calculator to compare carriers and predict the worst case — then buy your label through a provider.

No. They are published weight-band reference prices, not destination-specific quotes. Australia Post own-packaging parcels can be priced using the greater of actual and cubic weight, and the destination affects the price. Prepaid satchels have a fixed national price within the product's weight limit.