Summary
Most warehouses still pack orders into whatever standard box is closest.
The result is that you ship air, and carriers charge you for it through dimensional weight on every parcel that leaves the dock.
Carriers have only tightened this. As of August 2025, both UPS and FedEx round each parcel dimension up to the next whole inch before billing, so an oversized box costs even more. Cartonization software fixes that by calculating the best box for each order based on item dimensions, weight, and constraints.
Two of the tools worth weighing here are 3DBinPacking and Pulse, and they sit at different ends of the spectrum.
Feature Comparison
Both tools pack boxes. The difference is how far the optimization reaches, and what it connects to.
3DBinPacking
3DBinPacking is a packing optimization service built around one core job: tell you which box or space to use, and how to arrange the items inside it.
It runs as both a web app and a REST API, and it is fast, with most calculations returning in milliseconds.
What 3DBinPacking Does
It provides six tools: Pack a Shipment, Stack Pallets, Find a Box Size, Try Out Box Sizes, Find a Missing Dimension, and Check Max Load.
The engine optimizes by one of three goals you select: the fewest boxes, the highest space utilization, or the lowest cost, where cost is a value you assign to each box yourself.
It treats every item and container as a cuboid, with a single per-item vertical-rotation toggle. You can set a maximum weight per packing space, group or separate items, and cap items per box. Each result returns the boxes used, the arrangement, and step-by-step visual instructions.
Where 3DBinPacking Stops
3DBinPacking gives you a packing answer, but your team builds everything around it: connecting it to order data, surfacing the result to packers, and maintaining the integration.
- Axis-aligned packing only. The API exposes a single vertical-rotation parameter per item, so placement is limited to 90-degree orientations. There is no diagonal rotation, which typically leaves 3 to 5% of fill on the table.
- No envelopes and no nesting. Every item and container is a cuboid. There is no poly-mailer or envelope mode, and no nesting of irregular shapes.
- Cost optimization is manual. You optimize by cost only against a price you assign to each box yourself, not against carrier rate tables or DIM thresholds.
- Pallet stacking is basic. The Stack Pallets tool reduces pallet counts, but it is bin-packing applied to a pallet, not dedicated palletization with layer building, weight distribution, and stability logic.
- No connection to picking or slotting. There is no pick-to-box workflow, no box-range recommendation, and no native WMS, OMS, or TMS integration.
3DBinPacking fits low-to-mid volume shippers (roughly under 10,000 parcels per month), developers building custom workflows, and teams validating cartonization before committing to a platform.
Pulse by Optioryx
Pulse is simple to start with: drop in your orders and it tells you which box to use, just like a standalone calculator. The difference is that box packing and pallet stacking optimization live in the same platform, so the box you choose can be checked against how it stacks on the pallet. And if you want to connect cartonization to picking, that's there too, with pick-to-box and pick-to-pallet.
Like 3DBinPacking, Pulse can optimize for one of three goals: the fewest boxes, the highest space utilization, or the lowest cost. Where it goes further is letting you rank those goals instead of picking just one, so you can tell it to minimize cost first and maximize fill second, and weigh every objective in the order that matters to you.
You can also load your carrier rates directly into Pulse and instantly see which carrier comes out cheapest for each shipment, turning the box decision and the carrier decision into a single answer.
Pulse runs as a standalone web app and as an API that can integrate with any WMS. You can run simulations without touching your existing systems, then connect when you are ready.
Deeper Packing Intelligence
Pulse rotates items diagonally to find tighter fits, which delivers 3 to 5% better fill than axis-aligned packing alone.
It routes flat, lightweight items to envelopes and poly mailers instead of boxes, typically 70 to 80% cheaper per unit on those SKUs. Its cost-aware engine factors actual carrier rate tiers and DIM thresholds into the decision, so it selects the cheapest box to ship, not just the smallest.
And box-on-demand support means Pulse can optimize for custom-cut cartons where you run on-demand packaging machines.
Configurable to Your Operation
Pulse's packing algorithm is parameterized, not fixed. You decide which behaviors are on: diagonal rotation, envelope routing, stacking and layer rules, adjustable or cut-to-size box height, maximum weight per box, orientation locks, and fragility handling.
Those settings save as profiles and apply per product category, per carrier contract, or per warehouse, so the same engine runs B2C parcels, B2B pallet orders, and mixed flows.
Pallet and Box Count Prediction
Pulse predicts how many boxes and pallets an order needs before picking starts. That early visibility helps teams coordinate with carriers and prevent dock bottlenecks.
2D and 3D Packer Guidance
Both tools generate visual packing instructions. Pulse goes further with 2D layer views and full 3D pack views for each box and pallet layer, so the optimization gets executed correctly on the floor.
Connected to Picking and Palletization
Pulse's pick-to-box workflow assigns the target box before a picker starts their route, eliminating rework at the pack station. Pick-to-pallet flags boxes that do not stack well together before the dock.
The dedicated palletization algorithm optimizes layer building, weight distribution, and stability. That is where the 20 to 35% reduction in outbound pallets comes from.
Beyond Cartonization
Because Pulse also runs picking and slotting optimization, the gains compound. A box selected for packing efficiency also stacks well on its pallet and sits on a pick path that minimizes travel.
Customers such as Voltex, CleanFilter and Van Moer Logistics use Pulse to optimize packing as part of that broader flow.
Pulse works whether you just want a box recommendation, cartonization that helps you reduce transport cost and guides operators or for it to be connected to picking and pallet stacking operations.
How to Choose
Two questions settle most of it.
- Do you just need a packing answer, or a packing operation? The easiest way to find out is to try both. Sign up for Pulse's free web app, run your own orders through it and through 3DBinPacking's trial, and compare the results side by side to see which you like. If a standalone packing answer is all you ever need, either can work. But if you want that box decision connected to the rest of your operation, pallet stacking, picking, and slotting, that is a platform job, and only Pulse does it here, so start there.
- Do you want the cheapest box, or the cheapest shipment? A calculator can hand you the smallest box that fits. The cheaper question is which box, on which carrier, costs the least to actually ship. Pulse lets you load your carrier rates, rank objectives (minimize cost first, maximize fill second, and so on), and see the cheapest carrier per order in one step. 3DBinPacking can optimize by a cost you assign to each box yourself, but it will not compare carriers or weigh objectives for you.
The fastest way to decide is to test both on your own data. Start in Pulse for free, upload your real order mix, and run cartonization and pallet simulations in the browser with no integration. Compare the boxes, fill rates, and pallet counts against your current process before committing.
For a broader view across five platforms, see our best cartonization software buyer's guide, and our head-to-head with Paccurate.
Questions?
3D cartonization software calculates the best box (or combination of boxes) or different containers for an order using 3D item dimensions. In some cases it can also consider handling rules (such as "this side up" information) or carrier rates. It aims to reduce empty space, avoid repacking, and improve packing consistency and reduce transport costs.
3DBinPacking is a packing-calculation service: you send item and box dimensions to its API or web app and it returns which boxes to use and how to arrange items. Optioryx Pulse is a warehouse optimization platform where cartonization is one connected module alongside pallet stacking, picking, and slotting, adding diagonal rotation, envelope routing, carrier-rate cost logic, box-on-demand, and native WMS integration. 3DBinPacking gives you a packing answer; Pulse optimizes the full outbound flow.
Yes, in a basic form. Its Stack Pallets tool applies 3D bin-packing logic to a pallet to reduce pallet counts, but it does not do dedicated palletization with layer building, weight distribution, and stability analysis. Optioryx Pulse runs a separate palletization algorithm for those, which is where a 20 to 35% reduction in outbound pallets comes from.
Partly. 3DBinPacking can optimize by cost only if you assign a shipment cost to each box yourself, so it picks the cheapest of the boxes you defined. It does not read carrier rate tables or dimensional-weight thresholds automatically. Optioryx Pulse factors actual carrier pricing tiers and DIM thresholds into the box decision, so the result is the cheapest option to ship.
Standard cartonization finds a box that fits your items. Cost-aware cartonization finds the box that costs the least to ship. The difference matters because carrier pricing is not linear - dimensional weight thresholds, oversize surcharges, and zone-based rate structures mean that a slightly larger box can trigger a meaningfully higher shipping cost. Cost-aware cartonization factors your actual carrier rate tables into the box selection decision, so the output isn't just "this fits" but "this is the cheapest option that fits." At high parcel volumes, that distinction adds up fast.
Yes. Most cartonization platforms - including Optioryx Pulse - can operate via API without a direct WMS integration. Your order data is passed to the cartonization engine at the time of packing, and the box recommendation is returned in real time. A WMS integration adds convenience and automation, but it's not a prerequisite to get started. Many operations begin with a lightweight API connection and add deeper WMS integration later once the value is proven.
3DBinPacking suits low-to-mid volume shippers and developers who want a packing API priced by calculation volume, with a 14-day trial. Optioryx Pulse is also free to start in the browser and returns the same which-box answer for simple cases, while letting you switch on pallet, picking, and slotting optimization as you grow. For teams that expect to do more than select a box, Pulse is the more future-proof choice even at lower volumes.