The Ideal Box

(For Inbound FBA Shipments)

Part of the cost to ship product to Amazon using UPS is the physical dimensions of the box. However, if the box isn’t heavy enough compared to its size, UPS charges dimensional weight. Large, light boxes can end up costing way more for shipping and eat into your bottom line. Use these calculators to find out what your box needs to weigh to avoid dimensional weight charges and see what all the common box sizes would need to weigh.

Unfortunately this tool couldn’t be effectively converted during a recent migration of platforms. You can still get the PDF version.

  • What’s the math for calculating dimensional weight? Rounding up to the nearest whole number, use: width x height x depth / 139.
  • Does this work for USPS? The math is the same. USPS’ divisor is `166`.