How many boxes fit in the car?

Moving day math: enter your box size, pick the car or storage unit, and see how many boxes actually fit — at a realistic packing efficiency.

Enter your setup

Your box

Box length

Box width

Box height

Your vehicle or unit

Cargo spaceUsable L×W×H. Assumes ~80% packing efficiency.

Use positive measurements and valid numbers.

MOVING · VOLUME

Boxes that fit

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Do you need moving supplies?

Moving box multi-packsAmazon Furniture dollyAmazon

Hand-picked for this exact result — no generic lists.

Volume is only half the story — the cargo opening decides what actually goes in.

Measure the opening, not just the trunk.
A box that fits the volume may not pass the trunk lid.
Count on 80% efficiency.
Wheel wells, sloping roofs and odd corners eat space.
Heavy boxes low and forward.
Weight over the axle keeps the car stable.
Strap tall stacks.
Anything above the seat line should be tied down.

One concrete case, with the assumptions spelled out.

A ~445 L trunk at 80% efficiency holds about 9 boxes of 36 L each.

ƒ(x)boxes = floor(cargo litres × 0.8 ÷ box litres)