Carrier Comparisons

USPS vs UPS vs FedEx: Where the Cheaper Carrier Flips

Head-to-head carrier comparisons that name the weight, zone or box size at which the answer changes, rather than crowning one carrier overall.

No carrier is cheaper than another in every case. USPS bills actual weight on most domestic services, UPS bills the greater of actual and dimensional weight, and the point where that difference flips the cheaper option depends on the box, the weight and the destination zone. These 12 comparisons work out where each flip sits.

I'd Ship That prints discounted USPS and UPS labels. FedEx appears in several of these comparisons because sellers compare against it, and those pages are reference material: FedEx is not sold through I'd Ship That.

Pick the comparison that matches the two options you are actually choosing between. If you have already chosen a carrier and only need its price table, go to the rate guides instead.

USPS vs UPS: Where the Cheaper Carrier Flips
Where dimensional weight and cubic pricing flip the cheaper carrier
See comparison
USPS vs FedEx: The Surcharge Stack That Doubles It
Why a FedEx Ground quote is not what a residential parcel actually costs
See comparison
UPS vs FedEx: Surcharges Decide It, Not Base Rates
The surcharge structure, not the $1-3 base gap, decides a UPS or FedEx invoice
See comparison
USPS vs UPS Small Packages: the 1 lb Line
Where sub-pound USPS pricing beats the UPS Ground floor, and where cubic wins
See comparison
USPS vs FedEx Overnight: Which Window You Need
Which overnight guarantee you are actually paying for, and when 6 PM is enough
See comparison
UPS Ground vs FedEx Ground: the Fee Stack
Residential, delivery-area, fuel, and DIM decide a Ground bill, not the $1-3 base gap
See comparison
USPS Ground Advantage vs Priority Mail
When the Priority Mail upgrade is worth paying for, and when 2-5 days is enough
See comparison
USPS vs UPS Heavy Packages: Where DIM Flips It
Where dimensional weight and girth flip the cheaper carrier on a big box
See comparison
USPS vs FedEx for Ecommerce: Route by SKU
Route each SKU by weight and cube instead of standardizing on one carrier
See comparison
USPS Flat Rate vs Weight-Based: Break-Even Weight
The break-even weight where a flat rate box stops saving you money
See comparison
USPS Ground Advantage vs UPS Ground: Surcharges
The surcharges that decide the two everyday ground services, shipment by shipment
See comparison
USPS Media Mail vs Ground Advantage: Eligibility
When Media Mail eligibility is worth the savings, and when it is a postage-due risk
See comparison

Where to Go Next#

Cheapest way to ship an item
Packing and service picks, item by item.
Rates by service
Zone and weight breaks for each USPS and UPS service.
Cost by package weight
What a package costs at each weight tier.
Guides by selling platform
Which service each marketplace expects.
Delivery times by service
Business days by zone, and whether it is guaranteed.

Compare All Carriers in One Place#

Get instant quotes from USPS and UPS side by side.

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