Free 3D Logistics Calculators
Size the carton, load the pallet, estimate the freight class — every calculation runs in your browser. No installation, no sign-up, free.
Carton 3D Calc
Turn product dimensions into a finished carton spec: inner and outer size, an RSC dieline PDF, and the arrangement that loads the most units on a pallet.
Pallet 3D Calc
Calculate cartons per pallet, compare interlocked vs column stacking in 3D, and export a one-page loading report.
LTL 3D Calc
Estimate NMFC density-based freight class on both the classic and the 2025 13-sub scale, palletize multi-item shipments, and preview truck loading.
DIM Weight Calc
Get the dimensional (volumetric) weight and billable weight for parcel and courier shipments — UPS, FedEx, DHL and USPS dim factors built in.
CBM Calculator
Convert carton dimensions into cubic meters for ocean and air freight, with chargeable weight and how many fit in a 20ft or 40ft container.
CubeFreight Pro COMING SOON
Desktop-grade suite with mixed-SKU palletizing, double stacking, brick patterns and bulk exports. In development.
What is CubeFreight?
CubeFreight is a suite of five free logistics calculators built for packaging engineers, warehouse planners, e-commerce sellers and LTL shippers. Each tool solves one step of the same chain: the Carton calculator designs the shipping box around your product, the Pallet calculator finds the best way to stack those boxes on a pallet, the LTL calculator estimates the NMFC freight class that determines what the shipment costs to move, and the DIM Weight and CBM calculators convert those dimensions into the billable weight and volume that parcel, ocean and air carriers actually charge on.
Everything is a plain web page — dimensions never leave your browser, results render as interactive 3D views, and every tool exports a printable PDF report you can hand to the warehouse or your carrier.
Which calculator do you need?
| If this is your situation | Start here |
|---|---|
| You have a product and need to design the shipping box around it | Carton 3D Calc |
| The carton is fixed and you want the most units per pallet | Pallet 3D Calc |
| You are quoting an LTL shipment and need the NMFC freight class | LTL 3D Calc |
| A courier is billing you for more weight than the parcel actually weighs | DIM Weight Calc |
| You are booking ocean LCL or air freight and need cubic metres | CBM Calc |
How the tools fit together
Freight cost is decided long before a carrier quotes it. The carton size sets how many units fit on a pallet; the pallet pattern sets the density that determines the freight class; and that same set of dimensions decides whether a parcel is billed on its real weight or its dimensional weight. Changing a box by half an inch can move all three numbers. Working through the tools in order - design the carton, stack the pallet, then check the class, billable weight or cubic metres - shows where a shipment is losing money instead of only confirming the invoice after it arrives.
Frequently Asked Questions
Are the calculators really free?
Yes. All three calculators are free, with no account, no trial limit and no watermarks on the PDF exports. The site is supported by advertising.
Which calculator should I start with?
Follow the shipping chain: if you are still deciding the box size, start with the Carton calculator — it also shows the pallet load for each candidate box. If your carton is fixed, use the Pallet calculator to maximize the load. If you ship LTL in North America, run the result through the LTL calculator to estimate the freight class.
Does my data leave the browser?
No. Dimensions, weights and quantities are processed entirely in your browser by JavaScript. Nothing you type is uploaded or stored on a server.
Which pallet standards are supported?
T11 (1100×1100, KR/JP), Euro EPAL (1200×800), US GMA (48×40 in), ISO industrial (1200×1000), Australian (1165×1165) and fully custom sizes, in mm, cm or inches.
How accurate is the freight class estimate?
The LTL calculator applies the official density break points, including the July 2025 13-sub scale, and calculates density exactly the way the NMFC measures a handling unit — pallet included. Actual classification can still differ for commodities with special stowability, handling or liability rules, so treat it as an estimate.
When should I use the DIM weight calculator vs the CBM calculator?
Use the DIM weight calculator for parcel and courier shipments (UPS, FedEx, DHL), where the carrier bills the greater of the actual and dimensional weight. Use the CBM calculator for ocean and air freight, where cost is based on cubic metres and chargeable weight.
Can these tools estimate my shipping cost?
Yes, as an estimate. Enter your own rate — per pound or kilo in the DIM weight calculator, or per CBM or kg in the CBM calculator — and the tool multiplies it by the billable or chargeable weight. Actual charges vary by zone, service, surcharges and your carrier contract.
What will the Pro version add?
A desktop-grade suite for daily production use: mixed-SKU palletizing, double stacking, brick stacking patterns, container planning and bulk exports. It is in development — the free web calculators stay free.