Weight tells you how heavy your shipment is. Cubic feet tell you how much truck space it occupies. For an interstate household move, the more important questions are whether the estimate is binding, whether the inventory is complete, and how the final charge can be verified.
A sofa can be light for its size; a box of books can be heavy for its size. That is why two homes using the same truck space can have different weights—and why neither measurement can rescue an incomplete inventory.
Weight and cubic feet answer different questions
A binding estimate promises a total price for the goods and services written into it. A non-binding estimate is an expected price; under federal interstate rules, the final charge follows the shipment’s actual weight, services performed, and the mover’s tariff. The words binding and non-binding therefore matter more at signing than whether the salesperson first discussed pounds or truck space.
How a weight-based estimate works
For a non-binding interstate shipment, the truck is weighed before loading and again after loading on certified scales. Suppose the empty truck and equipment weigh 28,400 pounds and the loaded truck weighs 34,700 pounds. The household shipment weighs 6,300 pounds. The mover then applies its tariff and adds the services shown on the paperwork.
A weight estimate can still be weak if the inventory omits the garage, attic, patio, storage unit, packed-by-owner boxes, or a heavy specialty item. Review the item list line by line. If the shipment changes before loading, ask for the required written revision before the crew begins.
How a cubic-foot estimate works
Volume is the space an item or stack occupies. A box measuring 24 by 18 by 18 inches occupies 4.5 cubic feet: multiply the three dimensions in inches and divide by 1,728. Movers usually estimate an entire home from a cube sheet rather than measuring every packed surface on the truck.
Cubic feet are especially useful when choosing a rental truck, portable container, or storage unit. For a professional interstate estimate, ask to see the complete cube sheet and the mover’s written formula for converting volume to weight. Federal guidance requires that explanation when a mover provides an estimate by volume and converts it to weight.
Compare estimates on the same home
Give each company the same room-by-room inventory, packing responsibility, addresses, dates, stairs, elevators, long carries, shuttle needs, storage, and specialty items. A quote that omits packing or access work is not cheaper in a useful sense; it is pricing a smaller job.
Which method should you prefer?
For a DIY truck or container, cubic feet help choose capacity. For a non-binding interstate mover, actual certified weight provides a clear verification path. For a binding estimate, the complete inventory, included services, and signed total are the center of the agreement.
Moveline’s U.S. agent network is responsible for more than one million moves each year, giving its team extensive experience with inventories, estimates, access limits, packing, and moving-day handoffs. That experience supports a simple habit: make the inventory accurate before comparing prices. You can start with Moveline’s moving cost calculator, then use questions to ask moving companies before accepting an estimate.
The bottom line
Do not choose a mover because one number is expressed in pounds and another in cubic feet. Choose the estimate that describes the same complete move, names the price terms, explains how changes are handled, and gives you documents you can verify.
