Round the weight up
UPS's own guidance says to round any fraction of a pound up to the next full pound when entering weight, on a standard scale — matching the checkout weight to what a UPS scale reads avoids a correction charge after the fact.
UPS
What UPS actually requires from your box
A rejected pickup almost always traces back to one of five things: the wrong tape, not enough cushioning, a box past the weight or size limit, an old label still showing, or corrugated cardboard that isn't fully encasing the item. UPS publishes the rules for all five on its own site, quoted below as read on 2026-08-16.
Quoted from ups.comRead 2026-08-16Checklist, not a summary
Five requirements, one checklist
Box, tape, cushioning, label, and the size and weight ceiling. Miss one and the package either gets an extra charge or doesn't move.
The box itself
UPS's packaging guide, read on 2026-08-16, states plainly: “Use a rigid box with flaps attached, and do not exceed the maximum weight limit for the box” — a limit printed on the box's own bottom flap by its maker, separate from the carrier's own package ceiling further down this page. Its shipping dimensions and weight page, also read 2026-08-16, adds that barrels, drums, pails and tires cannot ship without being fully encased in a corrugated cardboard container, or an Additional Handling charge applies instead of an outright refusal.
A box that has gone soft from a previous trip, lost a flap, or was built for something lighter than what's going in it now fails this requirement even if the tape and label are perfect. Reusing boxes is fine; reusing a box that's already been crushed once is not.
Tape: what's required and what's banned
UPS is specific here, and the banned list surprises people who tape boxes the way their household always has. Read from ups.com's packaging tips page on 2026-08-16: “Do not use masking, cellophane, duct or water activated paper tapes, string or paper over-wrap.” The instruction in its place: “Only Use Shipping Tape” and “Securely seal closures and seams.”
| Situation | What UPS requires |
|---|---|
| Standard box | Plastic or nylon shipping tape, at least two inches wide, sealing every closure and seam |
| Heavier or bulkier item | Heavy-duty, preferably reinforced tape, applied in three strips across both the top and bottom seams so the middle seam and both edge seams are sealed |
| Not allowed at all | Masking tape, cellophane tape, duct tape, water-activated paper tape, string, or paper over-wrap |
Duct tape is the one that trips people up most, because it feels like the strong choice. UPS rules it out anyway — it doesn't hold reliably across the temperature swings a box goes through in a truck, and it fails the "at least two inches of shipping tape" wording specifically.
Cushioning
UPS's packaging guidance, read 2026-08-16, sets a floor rather than a suggestion: “Use no less than two inches (five centimetres) of loose filler material around lightweight items,” whether that's cell bubble sheeting, loose-fill peanuts, or tightly crumpled kraft paper with at least two inches of paper between the contents and the outer box.
For anything fragile, UPS recommends the two-box method by name: an outer box with depth, width and length six inches greater than the inner box holding the item, with three inches of cushioning material packed into the gap on every side. That's a specific, checkable number, not a general instruction to "pack it well."
Labels, and what to do with old ones
Two requirements sit here, both read from ups.com on 2026-08-16. First: “Securely attach a UPS-issued paper shipping document or label.” Second, and the one people skip on a reused box: any old labels, hazardous materials markings, or other previous shipment markings need to be removed or covered before it ships again. UPS also asks for a duplicate address label placed inside the box, so the contents can still be matched to a sender and recipient if the outer label is torn off in transit.
The weight and size ceiling
UPS's shipping dimensions and weight page, read 2026-08-16, sets three numbers for a standard domestic package, and a box over any one of them stops being a normal parcel.
| Limit | Published figure |
|---|---|
| Weight | Up to 150 lb |
| Length | Up to 108 in |
| Length plus girth | Up to 165 in combined |
There's also a middle band worth knowing about before it shows up as a surprise line item: the same page's additional-fees guidance defines a package as qualifying for an Additional Handling charge once the longest side passes 48 inches, the second-longest side passes 30 inches, average weight passes 50 lb, or cubic size passes 10,368 cubic inches. None of those stop the shipment; they just add a fee. A box only becomes "Large," with a 90 lb minimum billable weight applied regardless of its real weight, once length plus girth passes 130 inches, length alone passes 96 inches, cubic size passes 17,280 cubic inches, or weight passes 110 lb.
A package past the 150 lb / 108 in / 165 in ceiling doesn't ship as a parcel at all — it needs to move as freight instead, priced by a person rather than a live parcel rate.
One more thing that isn't about the box
Restricted contents are separate
Meeting the box, tape, cushioning and label requirements above doesn't clear an item UPS won't carry at all, or carries only under a signed agreement. That list is its own topic.
The address itself has to be complete
An incomplete or unreadable address turns a compliant box into a delivery exception. Write it exactly as it appears on the account or order, including apartment or suite number.
Price a box that meets these requirements See what UPS won't carry
Where these rules come from
- UPS, Packaging Tips — box selection, cushioning, tape, and label requirements. Read 2026-08-16.
- UPS, Shipping Dimensions and Weight — the 150 lb / 108 in / 165 in package limits. Read 2026-08-16.
- UPS, Avoid Additional Shipping Fees — corrugated cardboard requirement, Additional Handling and Large Package thresholds, weight rounding. Read 2026-08-16.
UPS revises these pages without notice. Treat the figures above as what was published on the date shown and check ups.com directly before packing anything close to a limit.
Common questions
What does UPS require a box to be made of?
Corrugated cardboard, fully encased, with the flaps intact. UPS states that barrels, drums, pails and tires cannot ship without being fully encased in a corrugated cardboard container, and a package missing that gets an additional handling charge instead of a plain rejection.
What tape does UPS require?
Plastic or nylon shipping tape at least two inches wide, with masking tape, cellophane tape, duct tape, water-activated paper tape, string and paper over-wrap all specifically ruled out. UPS asks for three strips of heavy-duty tape across both the top and bottom seams on anything heavy.
How much cushioning does a box need?
At least two inches of loose filler on every side of a lightweight item. For fragile items packed with the two-box method, UPS specifies an outer box six inches larger in every dimension than the inner one, with three inches of cushioning filling the gap between the two.
What is the UPS weight and size limit for a single package?
150 pounds, 108 inches in length, and 165 inches in length and girth combined, all read from ups.com. Anything over any one of those limits does not ship as a standard parcel.
Do old labels on a reused box cause a problem?
Yes. UPS's own packaging guidance says old labels, hazardous materials markings or other previous shipment markings need to be removed or covered before the box ships again, and it asks for a duplicate address label placed inside the box as a backup.