Freight & Logistics
Carton Size Calculator
Choose an outer carton size for identical products with padding, gaps and orientation constraints. Compare SI/US results and review the method, assumptions and related references below.
Change any input to update the calculation. Unit changes preserve the physical quantity.
Inputs
Calculated locally in your browser. No sign-up or input upload.
Results
Recommended outer length
226 mm8.8976 inRecommended outer width
336 mm13.2283 inRecommended outer height
361 mm14.2126 inOuter shipping volume
0.0274 m³0.9681 ft³Inner carton volume
25.773 L0.9102 ft³Items along length
1Items along width
3Layers
4Unoccupied inner volume
25.5034 %Unfilled grid slots
0Calculation breakdown
- Tested uniform grid
- 1 × 3 × 4; last layer may be partial
- Chosen item orientation
- 0.2 × 0.1 × 0.08 m
Assumptions & checks
Bounded uniform-grid packing heuristic, not a globally optimal mixed-item pack. It selects a box size; Cartons per Pallet packs existing boxes. Compression, cushioning design and shipping acceptance are not validated.
Formula
Choose an outer carton size for identical products with padding, gaps and orientation constraints
Worked example
Using the default values shown in the calculator, the same formula gives the following result. This is a quick sanity check for the calculation, not a design recommendation.
Inputs
- Product length
- 200 mm
- Product width
- 100 mm
- Product height
- 80 mm
- Products per carton
- 12
- Protective padding at each wall
- 10 mm
- Gap between products
- 5 mm
- Carton wall thickness
- 3 mm
- Maximum outer carton height
- 500 mm
- Allowed product orientation
- Rotate footprint, keep upright
Result
- Recommended outer length
- 226 mm
- Recommended outer width
- 336 mm
- Recommended outer height
- 361 mm
- Outer shipping volume
- 0.0274 m³
- Inner carton volume
- 25.773 L
- Items along length
- 1
- Items along width
- 3
- Layers
- 4
- Unoccupied inner volume
- 25.5034 %
- Unfilled grid slots
- 0
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Technical references for this calculation
Frequently asked questions
What does this result tell me?
Bounded uniform-grid packing heuristic, not a globally optimal mixed-item pack. It selects a box size; Cartons per Pallet packs existing boxes. Compression, cushioning design and shipping acceptance are not validated.
How can I check the calculation?
Worked example: A 200×100×80 mm item repeated 12 times is tested against upright rotations, 10 mm padding, 5 mm gaps, 3 mm walls and a 500 mm height cap. Review each stated input and unit; use project-specific values rather than treating the editable example as a requirement.
Reference data & method sources
- NIST SI conversion factors
SI/US dimensional conversions. Geometry and energy balances are stated explicitly, not attributed to a design standard.