{"markdown":"---\ntitle: \"FBA Pallet Calculator | Units Per Carton, Pallet & Container - Flapen\"\ncanonical_url: \"https://flapen.com/amazon/tools/fba-packing-calculator\"\nlast_updated: \"2026-07-09T18:07:45.668Z\"\nmeta:\n  description: \"Free pallet calculator for Amazon FBA — estimate your master carton, then see how efficiently it fills an air, truck, or sea pallet in 3D, with a supplier spec sheet.\"\n  \"og:description\": \"Free pallet calculator for Amazon FBA — estimate your master carton, then see how efficiently it fills an air, truck, or sea pallet in 3D, with a supplier spec sheet.\"\n  \"og:title\": \"FBA Pallet Calculator | Units Per Carton, Pallet & Container - Flapen\"\n---\n\nBack to Flapen home\n\n# **FBA Pallet Calculator**\n\nUnits per carton, pallet, and shipping container\n\n**Start from an example**\n\n**1 ****Unit & carton**\n\n**Unit dimensions (in)**\n\nlengthwidthheight**Units per carton****Estimated carton****20 × 16 × 12 in **· 2 × 2 × 2 units**2 ****Ship as**## **From one unit to a fully packed pallet**- **Estimate your master carton** Enter your unit size and how many units go in a box; the calculator estimates the tightest master carton — the most compact whole-unit arrangement — capped at Amazon's 150 units per carton. - **Cartons per pallet** Cartons stack upright on the pallet in even layers within each mode's fixed height. The tool shows cartons per layer, number of layers, and total units per pallet. - **Air, truck or sea** Pick a shipping mode with a fixed footprint and height — an air ULD, a road/FBA pallet, or an ocean-container pallet — and see how many pallets and units fit the matching vehicle. - **Efficiency, not just a count** The pallet is a fixed shipping volume. The calculator splits utilization into floor coverage and stack height, so you can see exactly where you are paying to ship empty air. - **Inches or centimetres** Switch between inches and centimetres at any time; your measurements convert automatically so the physical product stays the same size. - **Supplier spec sheet** Copy or print a clean spec sheet — units per carton, cartons per pallet, pallet height, units per vehicle — to send straight to your factory or freight forwarder. ## **Carton, pallet & packing efficiency**","title":"FBA Pallet Calculator | Units Per Carton, Pallet & Container - Flapen","description":"Free pallet calculator for Amazon FBA — estimate your master carton, then see how efficiently it fills an air, truck, or sea pallet in 3D, with a supplier spec sheet.","headings":[],"keywords":[]}