You’re standing in the appliance aisle or scrolling through endless dishwasher listings online, and suddenly it hits you: Wait… aren’t these things supposed to be standard size? It seems like they should be, right? They all fit under the counter, so they must be the same.
Well, not exactly. Let’s clear this up so you don’t end up with a dishwasher that sticks out like a sore thumb—or worse, doesn’t fit at all.
So, are they all the same size?
Here’s the simple answer: most dishwashers come in a standard size, but that doesn’t mean they’re all identical. The “standard” built-in dishwasher is usually about 24 inches wide, 24 inches deep, and 35 inches high. This size is designed to slide neatly under a typical kitchen counter.
But (and there’s always a “but”), there are variations. Compact dishwashers, for example, are narrower—around 18 inches wide—perfect for smaller kitchens or apartments. On the flip side, some high-end or European models might be slightly deeper or taller depending on their design.
Why does this matter when buying one?
Imagine ordering a sleek new dishwasher, waiting excitedly for delivery, only to realize it doesn’t fit your space. Not fun. Measuring your opening is key—even if you think you have a standard kitchen setup. Cabinets settle, floors get replaced, countertops get adjusted, and suddenly that “standard” opening isn’t so standard anymore.
Plus, some dishwashers have extra insulation or fancy door panels that make them bulkier than they look online.
What about portable and countertop dishwashers?
Ah, yes, those exist too! Portable dishwashers roll around on wheels and hook up to your sink—they’re not built-in, so size varies. Countertop models are even smaller, sitting right on your counter like a big coffee machine.
So no, those definitely don’t follow the same size rules as your traditional built-in units.
A quick measuring tip (because it saves headaches)
Before you hit “buy,” grab a tape measure and check three things:
Width – Measure the space between cabinets.
Height – From the floor to the bottom of the countertop.
Depth – From the wall to the edge of the counter (and remember to account for door clearance!).
This 2-minute step can save you from a delivery day disaster.
You pick the perfect dishwasher, it slides into the space like it was made for it, and everything lines up beautifully. No gaps, no awkward sticking out, just a clean fit. That’s what happens when you know what to expect size-wise.
So, are dishwashers all the same size? Mostly, but not always. The standard is 24 inches wide, yet there are compact and specialty models out there. Always measure your space and double-check the specs before buying.
Ever had a dishwasher that didn’t fit? Or found a clever way to make one work? Share your story—sometimes the best tips come from those “oops” moments!
