110 Gallon Tank Dimensions | What Fits Where

A standard 110-gallon rectangular aquarium measures 48 x 18 x 30 inches; other 110-gallon tanks vary widely by type, from 48 x 24 x 24 for open-top models to 76 x 24 x 15.5 for utility styles.

Before you buy a stand, clear a wall, or check your floor’s load rating, you need to know one thing: which 110-gallon tank you’re actually dealing with. The phrase “110 gallon tank” covers everything from fish tanks to fuel storage, and the footprints don’t come close to matching. Here’s the breakdown by tank type, with the measurements that matter for your space and your stand.

Standard 110-Gallon Aquarium Dimensions

The most common 110-gallon aquarium you’ll encounter is the standard rectangular glass tank. Multiple sources, including the Perfecto tank size chart, list this tank at 48 x 18 x 30 inches—that’s 4 feet long, 18 inches deep, and 30 inches tall. Marineland’s version comes in at 48-3/8 x 18-3/8 x 31 inches, a hair larger all around.

This tall, narrow profile is what sets a 110 apart from a 90-gallon (48 x 18 x 24) or a 125-gallon (72 x 18 x 21). The 110 is built for height, which means it gives you vertical aquascaping room but a relatively small footprint for its volume.

Filled Weight and Floor Considerations

Here’s where 110-gallon tanks surprise people.

Before you commit, check two things:

• Stand compatibility: a 48-inch stand built for a 90-gallon (48 x 18) may work, but the extra height and weight demand a stand rated for the 110’s loaded mass. Never assume a “48-inch stand” fits all 48-inch tanks.
• Floor structure:

If you’re still deciding between models, our roundup of top-rated options covers 110-gallon tanks for every setup so you can compare footprints side by side.

Other Types of 110-Gallon Tanks

The moment you leave aquariums, dimensions scatter. A utility tank, fuel tank, or open-top container labeled “110 gallon” will not share the aquarium’s footprint. Here is how the major categories break down:

That last row shows why the word “dimensions” matters: a 110-gallon fuel tank from Turner Tanks is a vertical cylinder, 23 inches in diameter and 24 inches tall, with no rectangular footprint at all. If someone tells you they have a “110-gallon tank,” ask what it holds before assuming any of the numbers above apply.

For aquariums specifically, the Perfecto standard tank dimensions chart lists the 110-gallon rectangular model at 48 x 18 x 30 inches, with alternate color codes (black and oak) for the same footprint.

Measuring Before You Buy

Whatever tank you’re considering, verify the dimensions against your space with a tape measure rather than trusting the volume label. Manufacturers measure outside edges, so a tank listed at 48 inches may need another inch of clearance on each side for trim, hoses, or a hood. For aquariums, also confirm whether the listing is for a standard, tall, low-profile, or open-top model—the same gallon rating can come in footprints that differ by a foot or more in one direction.

The honest rule: dimensions are product-specific, and a 110-gallon tank is whatever its manufacturer says it is. Get the exact model number, measure your space, and check the filled weight before you commit to a stand or a room.