Parcel vs LTL Calculator
One question, answered straight: ship it small parcel or palletize it and ship LTL freight? Enter your boxes — we check every one against the parcel size and weight limits, weigh the total, flag oversize surcharges, and if it tips into freight, preview the freight class so you’re ready to quote it.
Enter the weight of one box in each row, then how many of that box you’re shipping. Add a row for each different size.
The call
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Per-package check
| Box | Size (L×W×H) | Weight | L + girth | Parcel? |
|---|
If you ship it LTL
This class is estimated from your box density. Palletizing adds the deck and air gaps, which lowers density and can bump the class a notch — confirm it once you know your real pallet dimensions.
Parcel or LTL — how the line gets drawn
Small parcel and LTL freight are two different networks with two different price curves. Parcel (UPS, FedEx, and USPS Ground) prices each box on its own — cheap for one or a few light packages, but the per-piece charges stack up fast as boxes multiply. LTL freight prices a palletized shipment by weight, class, and the space it takes on the trailer — more overhead for a single box, but far cheaper once you’re moving a pallet’s worth. The trick is knowing where your shipment crosses from one curve to the other.
The cheapest shipment is the one sent on the right network. Guess wrong and you either overpay parcel per-piece fees or eat an LTL minimum on a single small box.
The hard line: parcel size and weight limits
Some boxes simply can’t ride the parcel network. UPS Ground and FedEx Ground both cap a single package at 150 lb, 108 in in length, and 165 in in length plus girth. USPS Ground Advantage is tighter still. Go over any one of these and the package must ship as freight — that’s not a price call, it’s a rule.
| Carrier / service | Max weight | Max length | Max length + girth |
|---|---|---|---|
| UPS Ground | 150 lb | 108 in | 165 in |
| FedEx Ground | 150 lb | 108 in | 165 in |
| USPS Ground Advantage | 70 lb | — | 130 in |
Girth is the wrap-around measure: 2 × width + 2 × height. Length plus girth is the single longest side plus that girth — it’s how carriers catch a box that isn’t heavy but is too bulky to handle as an ordinary parcel.
The soft line: when freight gets cheaper
Below the hard limits it becomes an economics call, and this tool uses the common industry rule of thumb: under about 150 lb and a handful of boxes, parcel almost always wins; over roughly 500 lb, or once the freight fills about a pallet or more, LTL almost always wins. In between is a genuine overlap — the 150–500 lb gray zone — where the right answer depends on your negotiated rates, so quote it both ways. Watch the piece count too: a dozen light boxes headed to one address is often cheaper consolidated onto a pallet than sent as a dozen separate parcels.
Watch the surcharges
A box can be parcel-eligible and still be expensive. Carriers add Additional Handling fees once a package passes about 50 lb, has a longest side over 48 in or a second side over 30 in, and a Large Package surcharge once length plus girth tops 130 in or the longest side passes 96 in. When this tool flags those, the “cheaper” parcel option may not be — another nudge toward palletizing.
Where this stops and freight begins
This gives you the call and, if it’s LTL, an estimated freight class from your box density. It doesn’t quote the rate — real pricing depends on your carrier, lane, and how the freight actually palletizes. When it tips to freight, carry the numbers into the Aggregate Class Calculator for the exact shipment class, or build the whole thing in the Shipment Workpad.