Calculator
Use the grid below: three columns on large screens, two on smaller, and one on mobile.
Example Data Table
| Scenario | Trailer height | Door height | Pallet height | Case height | Top clearance | Max layers | Build height |
|---|---|---|---|---|---|---|---|
| Standard load | 110 in | 96 in | 6 in | 10 in | 2 in | 8 | 86 in |
| Low door | 110 in | 84 in | 6 in | 9 in | 2 in | 8 | 78 in |
| Rack limited | 110 in | 96 in | 6 in | 12 in | 2 in | 7 | 90 in |
These examples are illustrative. Always confirm site-specific rules and carrier guidance.
Formula Used
The calculator finds the smallest usable height after safety clearance:
- usable_height = min(trailer, door, forklift, rack, carrier) − top_clearance
- max_product_height = usable_height − pallet_height
- max_layers = floor(max_product_height ÷ case_height) (or rounded, if selected)
- build_height = pallet_height + (max_layers × case_height)
A simple stability heuristic estimates center of gravity and compares it to a footprint-based threshold adjusted by the handling factor.
How to Use This Calculator
- Select your units, then choose a pallet type.
- Enter case height, and optionally layer caps and clearance.
- Fill in any known height constraints (door, trailer, rack, forklift).
- Press calculate to see the maximum layers and build height.
- Use CSV for records; use PDF for quick sharing.
FAQs
1) Which height constraint should I trust most?
Use the tightest real-world constraint. Door clearance is often the limiter at docks. Trailer height matters in transit. Rack limits apply in storage.
2) Why subtract top clearance?
Clearance helps prevent rubs against door frames, roof bows, and uneven floors. It also covers measurement error and pallet deck variation.
3) What if my cases are mixed heights?
Use the tallest case height when stacking mixed items. This keeps layers conservative and reduces the chance of exceeding a hard height limit.
4) How accurate is the stability check?
It is a quick heuristic, not a certified engineering analysis. Use it to flag risky builds, then validate with load testing, wrap patterns, and site procedures.
5) Why can forklift height limit my pallet build?
If a forklift cannot lift a tall pallet safely, operators may tilt or re-handle the load, increasing damage risk. A practical build fits equipment capability.
6) Should I round down layers?
Yes, in most shipping workflows. Rounding down keeps builds within limits when pallets settle, cases compress, or floors are uneven.
7) How do I use the weight section?
Enter your maximum allowed gross weight and an estimated pallet gross weight. The tool flags when the estimate exceeds your limit, helping prevent compliance or equipment issues.
8) Does pallet height include stretch wrap or corner boards?
Wrap and boards can add small height. If you use tall caps, add a little extra clearance or increase case height slightly to stay conservative.