Case packing
Carton quantity and cube calculator
Compare all six axis-aligned item orientations inside one carton and apply an optional gross cargo-weight constraint.
Browser-local calculation · no account · no data upload
Live worksheet
Enter shipment data
Values stay on this device. Required fields are marked required.
Planning note: Results are unrounded estimates unless shown otherwise. Verify dimensions, units, carrier rules, and operational constraints independently.
Procedure
How to use this tool
- 01
Enter item and carton inside dimensions in the same unit.
- 02
Enter the item weight and maximum allowed contents weight per carton.
- 03
Enter the target item quantity to estimate full and partial cartons plus total outer cube.
Useful for
Common planning tasks
- Master-carton planning
- Case-pack comparisons
- Shipment cube forecasting
Model boundary
Assumptions
- Items and cartons are rectangular and consistently axis-aligned.
- The carton dimensions entered are usable inside dimensions for fit.
- Total shipment cube uses entered outside carton dimensions as an approximation.
Operational caution
Limitations
- Partitions, padding, carton wall thickness, irregular shapes, nesting, and practical packing access are excluded.
- Compression strength and safe gross carton weight require separate verification.
Reference
Questions and answers
Which item orientation is used?
The calculator checks all six axis-aligned orientations and uses the one with the highest grid count.
How is a partial carton counted?
Cartons required is rounded up, so the last carton may not be full.
Are carton dimensions inside or outside?
Use usable inside dimensions for fit. The cube result is only exact if those also equal the outside dimensions.