Moving Box Quantity Calculator
Underestimating boxes means a frustrating mid-pack supply run; overestimating wastes money. This calculator gives a realistic starting point. Set the number of rooms, the boxes you expect per room, and a stuff factor that reflects how much you own (1.0 for average, lower for minimal, higher for a full home). It multiplies these into a total, then splits the total into small, medium, and large boxes using shares you control. Add a buffer of 10 to 15 percent when ordering. Every figure is editable, so nothing is assumed about your household.
Moving box formula
Total boxes = rooms * boxes per room * stuff factor
Small boxes = total * (small share / 100)
Medium boxes = total * (medium share / 100)
Large boxes = total * (large share / 100)
Round each category up to whole boxes and add a 10 to 15 percent buffer when you place your order.
Packing tips
- Put heavy, dense items in small boxes so no single box gets too heavy.
- Use large boxes only for light, bulky goods like bedding and pillows.
- Set the stuff factor below 1.0 for a sparse home, above 1.0 for a full one.
- Keep wardrobe boxes and dish packs in mind for clothing and fragile kitchenware.
- Label every box by room and contents to speed up unpacking.
Moving boxes: frequently asked questions
How does the moving box calculator estimate quantities?
It multiplies a base number of boxes per room by your room count, then scales by a stuff factor that reflects how much you own (light, average, or heavy). The total is split into small, medium, and large boxes using shares you can edit. Every assumption is an editable input, so the estimate matches your home.
What are the box sizes for?
Small boxes suit heavy, dense items like books and canned goods. Medium boxes are the general-purpose workhorse for kitchenware and toys. Large boxes hold light, bulky items like bedding and pillows. Mixing sizes keeps individual box weight manageable.
How many boxes per room is realistic?
Box needs vary widely by household, so this calculator uses an editable boxes-per-room figure rather than a fixed assumption. A common starting point is around 10 boxes per room for an average household, adjusted up or down with the stuff factor.
Should I get extra boxes?
Yes. It is easier to return or recycle a few unused boxes than to stop packing for a supply run. Add roughly 10 to 15 percent to the totals, and keep some wardrobe and specialty boxes in mind for clothing and fragile items.
Does this include packing materials?
No, it estimates box counts only. Plan separately for packing paper, bubble wrap, tape, and markers. As a rough guide, budget one roll of tape per 15 to 20 boxes, but buy to your own packing style.
Official sources
- U.S. Department of Transportation: Protect Your Move.
- U.S. General Services Administration: Relocation resources.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.