The Best Corner Toilets of 2020
Reviews & Buying Guide

Featured image - Corner toilets

Corner, triangle, isosceles triangle, three-corner square, whatever you want to call this kind of toilet, writing an article about it  isn’t very high on my bucket list.

However, during a recent client visit, I found an annoying problem that some of the smaller houses faced: Small bathrooms. I had to squeeze myself into the bathroom.

Teacher in front of a blackboard

Me in the Future

Needless to say, the space in these smaller bathrooms was horribly restricting, especially the knee space. I would say I’m a big dude, but wow. You wouldn’t believe what kind of position I had to adapt so that I could do a number two!

Housing problem aside, let's hope I’m not going out of the bathroom industry and becoming a real estate agent…

The 2 Best Corner Toilets Reviewed

Triangular toilets aren’t that common so there are a very limited number of corner tanks I believe deserve to be on Flush Guide's list - we advocate the best, and only the best! Hence, today, our list is relatively short. Enjoy.




#1 American Standard Cadet- 3

American Standard Cadet-3
  • Great for saving space
  • Strong flushing power
  • Comfort seat height
  • EverClean surface - minimal cleaning

Type: Two-Piece

Bowl Type: Elongated

Water Use: 1.6 GPF

#2 American Standard Titan Pro

Titan Pro Right Height Elongated Toilet
  • Great for saving space
  • Strong flushing capacity
  • Reasonable price
  • 10 year warranty

Type: Two-Piece

Bowl Type: Elongated

Water Use 1.28 GPF

Another great triangle toilet for any small bathroom.

Even though the triangular tank fits nicely in the corner of any bathroom, it will not be completely flush against the wall, however, it is very close and looks as if it was made for the room.

Although it has a single flush system, here’s a hack to get dual flush. Push the handle slightly to get a light flush (liquid waste), or push all the way down to get a heavier flush for the big ones.

The Cadet-3 triangle toilet is a gravity assist flushing system that uses 1.6 gallons of water per flush. The triangular tank holds enough water, more than the conventional 1.6 gallons of flush. The extra water in the tanks provides additional pressure for the normal flush, so you can guarantee you will never see your droplets ever again.

All necessary parts are supplied (except the supply hose), so installation is fairly easy. No additional tools are required as it comes with what’s needed.

What We Like:

  • Triangle tank - Great for saving space
  • Strong flushing power
  • Comfort seat height - better pooping experience
  • EverClean surface to resist mold, mildew, and more - minimal cleaning

What We Don't Like:

  • Seat not included
  • Supply line not included
  • Not completely flush against the wall

If you’re looking for something that will save you space while providing great style and height, then you came to the right place.

The American Standard 2840.016 model with its triangular tank will fit perfectly into any corner. Don’t worry if you’ve never installed a toilet yourself before, because installation is a breeze.

It has great height- from the floor to the bowl is 16 ½ inches, and with a elongated seat it totals 17 ¾ inches.

This added height is taller than your regular toilet height, which makes it great if you have back problems, or if you have elderly people in the house. And I'm sure it hits the comfort height criteria.

Flushing is what you expect. No adjustment is needed to guarantee your poo particles disappearing forever. It’s also very efficient with a 1.28 gallon per flush; meaning if you’ve been drinking a lot of protein shakes, it won’t be too costly to make all those trips to the bathroom.

It’s  very simple, yet functional. Great for anyone who just wants something simple, but also wants to save space in the bathroom.

What We Like:

  • Triangle tank - Great for saving space
  • 3" Oversized flush valve - Strong flush capacity
  • Reasonable price
  • 10 year warranty

What We Don't Like:

  • Seat not included
  • Only one color option - Bone


You may wonder why you don’t see that many corner toilets in the U.S. The reason is simple: The installation of corner toilet pipe is different from a traditional water closet.

Bear with me here, I’m going to get a little bit technical.

The "dynamics" of a corner toilet almost ensures that it will be 15" away from any obstacle at the "center of the bowl" where the measurement would be taken. But since the opening will ONLY be 12" from the side wall, it can never be replaced with a conventional model unless the pipe is shifted. And, there's usually a cabinet next to it which would interfere with the leg room.

The Best corner toilet installation diagram


In other words, once you decide on a triangle toilet, it will be challenging to switch back to normal ones.

Sounds a bit tricky, I know, but hey, beggars can’t be choosers. And since you have limited options, why not make the most out of it? Under this belief, I quickly dive into the market and search for the best corner model.

What's The Solution To Small Bathrooms?

The solution to this space problem: Corner toilets. Also known as triangle toilet, these toilets have normal bowls; however, here comes the intriguing part - the triangle-shaped tank. The triangular tank can fit smoothly into any corner.

One important thing I want to point out here is that the corner toilet doesn’t “save” you precious space in the bathroom. The corner part uses your space WISELY.

I could do the math and show you how it saves space, but just trust me on this. The main reason is that the tank is stuffed inside into the corner.

Sometimes, you can even go crazy to have a sink just towering above the bowl if you’re really fighting for space...

American Standard Cadet-3
Our #1 Triangle Toilet Choice

  • Ever Clean antimicrobial surface
  • Durable and easy-to-clean vitreous china construction
  • Oversized 3 inch flush valve with chemical resistant flapper
  • check
    Comfort seat height
  • check
    Gravity assisted flushing power

Make sure to check out our guide on the best water closet. (

Good luck. Stay clean. Be white.