Best Modular Bookcases

Sturdy, stylish construction that comes in multiple colors and design options

Available in espresso, honey, white, and black. Six stackable storage units that measure 15 inches by 15 inches each. Made with a combination of solid wood and PVC laminate. Holds up to 200 pounds in total.

4 Cube Wire Storage Shelves

This is the most expensive item on our list.

Best Bang for the Buck

AmazonBasics

A basic, budget-conscious choice if you don't need all the bells and whistles.

Durable, mild steel construction that is lightweight but lasts a long time. Comes in a four- or six-cube basic starter pack. Each cube measures 14 inches by 14 inches. Comes with a one-year warranty. Offered in white or black.

Modular Shelving, DIY Closet Organization System, Plastic Wire Storage Cubes

This is a low-cost option, so the quality isn't as high as other options.

LANGRIA

Multiple display choices and a unique style that is different from other options.

Each storage unit can hold up to 10 pounds. Each cube can be used separately or combined and stacked to make a customization storage unit. Long-lasting materials are made from biodegradable properties.

Storage Cube Organizer with Rubber Hammer, 6-Cube Bookcase Cabinet

This is best used for lighter items, as it can fall apart easily under heavier weight.

SONGMICS

Three color options to match your style.

Hammer and everything you need to assemble in one box. Easy-to-clean and water-resistant design makes it great for kids rooms. 12-inch-by-12-inch storage cubes. Eco-friendly and safe for children and pets. Panels are rustproof and long-lasting.

Wire Cube Storage with 12 Individual Units

Compared to other similar bookcases, this one is trickier to assemble.

Tespo

Great for organizing lots of items at a heavier weight.

Each cube measures 14 inches by 14 inches with 1.5 cubic feet of volume. This unit comes with 12 separate storage containers. Great option to use as a pet fence too. Rust-resistant steel is highly durable and long lasting. With tool-free assembly, this bookcase snaps quickly and easily in place.