What a Cube Sheet Is, and How Far You Can Trust It

A cube sheet is a printed table of household items with a cubic-foot value beside each one. Dining chair, 5. Washing machine, 25. An estimator walks the home, marks a quantity against each line, and adds up the column. The total is the volume of the shipment, and everything downstream, truck size, crew size, and on a long-distance move the weight and the price, is built on that one number.

It is also called a table of measurements, which is the name printed at the top of most of the forms in circulation. Same document, older name.

The value on the line is not the size of the object. It is the space that object takes on a truck once it is padded, disassembled where it comes apart, and stacked against other things. That is why measuring a dresser and dividing by 1728 does not give you the number on the sheet, and why the two are not interchangeable.

Room by room, marking quantities. The skill is not arithmetic, it is seeing what is actually there: the boxes that will exist on move day but do not exist yet, the garage the customer did not mention, the closet contents that never appear on any line of the form.

That is where cube sheets go wrong in practice, and it is not the table’s fault. A perfect sheet applied to an incomplete item list produces a confident, precise, wrong number. The failure mode is covered in why moving estimates go wrong.

This is the part most movers have never been told. The values are trade convention, set decades ago and copied forward. There is no standards body publishing them and no measurement programme behind them.

We went and checked. We collected every moving cube sheet we could download free, transcribed 264 values by machine, and compared them. 4 of the 7 US trade forms turned out to be reprints of the same document under different company names. Counting honestly, there are 4 independent lineages in circulation, not 7 independent opinions.

Inside that reprint family 79% of shared lines are identical, which is what copying produces. Across independent lineages, only 54% of items have every source landing on the same number. The full method and the source list are in the cube sheet comparison study, and the per-item values are on the cubic feet chart.

On a long-distance move the price runs off weight, so the cube total gets converted. The convention is seven pounds per cubic foot, and most sheets print it at the bottom of the page.

Worth being precise about what that number is, because it is routinely misused: it is an average across a whole shipment, not a property of any single item. A shipment of books and a shipment of patio furniture do not weigh the same per cubic foot, and neither does a mattress. Multiplying one line of the sheet by seven to get that item’s weight is not what the convention supports, and it is how a dense load ends up underbid.

Use it the way it was meant: on the total, as an estimate, on a shipment of ordinary household goods.

Some lines are settled. Of the 60 items carried by two or more trade forms, 41 get the same number everywhere. A washing machine at 25 across 6 separate forms is about as solid as this gets, and you can quote it without hedging.

19 do not agree, and 8 of those differ by a factor of two or more. The gaps are worst where the object is ambiguous. A wardrobe is a bedroom cabinet on one sheet and a hanging carton on another. The sheets disagree about what the item is before they disagree about the number.

And the copies drift from each other. One form in that reprint family prints a toy chest at 60 cubic feet where its siblings print 5. Two movers can quote the same nursery off what they both call the standard sheet and be a truckload apart, with neither of them misusing the form.

• Date the sheet. 4 of the sources we compared carry no revision date, and one still prices a VCR. Anything it says about a television describes a different object.
• Check the lines you use most. Not the whole table. The ten or fifteen items that appear on nearly every job carry your margin.
• Watch the ambiguous names. Wardrobe, chest, cabinet and console mean different objects on different forms.
• Treat seven pounds as a shipment average. Never as an item weight.
• Worry about the item list first. A disputed cube value costs you a few feet. A missed room costs you the job.