3 Best Tips for Measuring a Toilet Perfectly

Even though it sounds somewhat funny but, toilets are probably one of the most integral parts of our daily life. However, still, most of us do not take much a care for it. Furthermore, many people probably also do not know how to measure their toilets accurately. Hence, whenever the toilet seat or any part for commode gets damaged, they, most times, rush to call the plumbers.

However, accurately measuring a toilet is quite easy. It is actually so simple that you can do it all by yourself. Do you want to know more about it? Then, here are some tips that can help you with it.

1. Measure the Rough-In first

While measuring your toilet, you should always start with the rough-in first. But why do you need to do that? Well, that’s because the rough-in would determine the distance between the wall and your toilet’s base.

You can use a tape measure for doing all the measuring tasks. In this case, you need to, first, crouch down and attach the end of the tape on the wall. After that, keep pulling the tape until you reach the toilet’s central bolts.

Once you get the measurement, write it on a notebook and then move on to the next step. However, keep in mind that the standard measurement should be around 12 to 14 inches.

2. Go for the Bowl Height and Length

Once you are done with the rough-in, then you can move on to the bowl length and height. To measure the bowl height, you would have to, first, keep the tape’s measuring end at the floor and keep stretching it until you reach the lid. The standard height of a toilet bowl generally roams around 15 to 20 inches.

On the other hand, to take the measurements of the bowl length, you would have to stretch the tape from the toilet’s front side to its tank. This section should measure around 16 to 20 inches.

3. Keep The Flush’s Water Usage in Mind

The tank of your toilet would be able to gather only a certain amount of liquid. Hence, it becomes quite crucial for you to measure how gallons of water your toilet uses with every flush.

Most times, you can find a number, which determines the flush’s water usage, in the space between the tank and the bowl. However, if you do not find anything there, then you can follow a few steps to find it out by yourself.

  • Measure the length and the width of the toilet tank
  • After that, determine water’s height in the tank with and without flushing
  • Once you have found out the height of water after flushing, then subtract it from the height of water before flushing
  • Multiply the number, which you have gotten from the third step, with the width and length of the toilet tank that you had measured before
  • Now, divide the result with 231 to get the desired GPF of your toilet


So, these are a few tips that can help you to get the proper measurements of your toilet.

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