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Moving Box Dimensions and Volume Chart

Convert measured box dimensions into cubic feet and compare sample carton volumes without confusing size, packed weight or carrying limits.

MoveDayPlan Editorial Updated

Convert measured box dimensions into cubic feet and compare sample carton volumes without confusing size, packed weight or carrying limits.

Use outside measurements for a load plan

The rows below are rectangular measurement examples, not a claim that every manufacturer's small, medium or large box has these dimensions. Measure a closed box including bulges. Product listings may use nominal or inside dimensions; those can understate the space taken by a packed carton.

Sample outer dimensions — planning worksheet
Sample outer dimensionsCalculation in inchesVolumeTwenty identical boxes
18 × 12 × 12 in 2,592 ÷ 1,728 1.5 cu ft 30 cu ft
18 × 18 × 16 in 5,184 ÷ 1,728 3 cu ft 60 cu ft
18 × 18 × 24 in 7,776 ÷ 1,728 4.5 cu ft 90 cu ft
24 × 18 × 24 in 10,368 ÷ 1,728 6 cu ft 120 cu ft

Add packaging and weight separately

These outer dimensions already include the carton, so do not add wall thickness again. A 10% layout allowance on 60 cu ft gives 66 cu ft; it does not turn a measured 500 lb of cartons into 550 lb. Record actual packed weight in a separate column. Carton strength markings and human handling limits are different checks, and neither is determined by cubic feet.

For mixed sizes, multiply each size's volume by its whole count and add the results. Keep oversized or non-stackable cartons on a separate list for a layout check. A total of 90 cu ft does not prove those cartons can pass through a particular door or fit into every 90 cu ft space.

Reviewed October 22, 2026. This worksheet uses editorial examples; measurements, prices, dates and provider requirements must be confirmed for your own move.

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