Small Closet Storage Calculator

Quick answer

Count how many bins fit across the width, how many fit front to back, and how many layers fit in the height, then multiply. The form below does that math in inches or centimeters and shows a layout that stays on the shelf.

Shelf or closet opening (inches)
Bin size (inches)
Bin measurements

9 bins

3 across, 1 deep, and 3 high is 9 bins. About 3 in of width, 1 in of depth, and 2 in of height stay open.

Top-down, one layer, stacked 3 high

These results are estimates. Measure your space and check the product's listed size before you buy.

How do you measure the shelf?

Measure the open space, not the outside of the closet frame. Width runs side to side, depth runs front to back, and height is the clear space above the shelf up to the next shelf, the hanging rod, or the top of the closet.

A bracket, a pipe, or a light that hangs into that opening is not usable room. Leave it out of the number you type.

How many bins fit?

Use whole bins only. A 36 inch shelf and an 11 inch bin fit three across, with 3 inches left over. Multiply bins across by bins deep by layers high.

If the leftover on a side is under about half an inch (1 cm), the row may be too tight to pull a bin out. Drop one bin from that side when they drag.

Which way should the bins face?

Turning a bin can raise the count on a wide, shallow shelf, or on a narrow, deep one. The calculator tries the size you typed and the same bin turned sideways, then keeps the layout that fits more bins.

When both layouts hold the same number, it keeps the facing you typed.

What size bin should you start with?

Buy one bin and set it on the shelf before you buy a set. A bin you can lift down with one hand is easier on a high shelf.

For folded clothes, something near 11 inches wide, 11 inches deep, and 6 inches tall is a common start. Use a shorter bin where the shelf height is tight.

Frequently asked questions

Can I enter centimeters?
Yes. Choose centimeters before you type, or switch units and the numbers convert. The bin count stays the same when the shelf and the bin describe the same real sizes.
Should the lid be included in the bin size?
Yes, if you store the bin with the lid on. Measure the outside of the bin as it will sit, including a lid that sticks out past the base.
What if a pole or pipe crosses the shelf?
Leave that strip out of the width or the height and run the numbers on the open part. A closet rod above a shelf limits height. A bracket in the middle means two shorter widths, so calculate each side on its own.
Does every spot have to be the same bin?
No. The count is the maximum if every spot uses the bin you entered. Mix in a taller bin, shoes, or a hamper and the number goes down. Run it again for the second bin if you want both counts.
Will the bins stack safely?
The calculator only checks that the layers fit in the height. It does not know the bin weight rating. Stack only what the bin is made to hold, and keep heavy things in the bottom layer.

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