How to Measure for a Toilet Replacement: A Step-by-Step Guide

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How to Measure to Replace a Toilet

If your toilet is old, leaking, or simply not working properly, it may be time for a replacement. Replacing a toilet is a relatively simple DIY project that can save you money on labor costs. However, before you can start shopping for a new toilet, you need to know how to measure your old toilet so that you purchase the right size replacement.

In this article, we will discuss the different measurements you need to take in order to replace a toilet, as well as provide tips for choosing the right toilet for your bathroom. We will also cover some of the common mistakes people make when replacing a toilet, so that you can avoid them and ensure a successful project.

Steps to Measure for a Toilet Replacement

To measure for a toilet replacement, you will need to take the following measurements:

  • The rough-in measurement: This is the distance from the back of the toilet to the center of the drainpipe. The standard rough-in measurement is 12 inches, but some toilets may have a different rough-in measurement.
  • The toilet bowl width: This is the width of the toilet bowl, measured from the inside of one side to the inside of the other side.
  • The toilet bowl length: This is the length of the toilet bowl, measured from the front to the back.
  • The toilet seat height: This is the height of the toilet seat from the floor to the top of the seat.

Choosing the Right Toilet for Your Bathroom

Once you have taken the necessary measurements, you can start shopping for a new toilet. When choosing a toilet, there are a few factors you will need to consider, including:

  • The size of your bathroom: If you have a small bathroom, you will need to choose a toilet that is not too large.
  • The style of your bathroom: You will want to choose a toilet that complements the style of your bathroom.
  • The features you want: Some toilets come with features such as a bidet, a self-cleaning function, or a heated seat.

Common Mistakes to Avoid When Replacing a Toilet

Replacing a toilet is a relatively simple project, but there are a few common mistakes that people make that can lead to problems. Here are a few tips to avoid these mistakes:

  • Don’t forget to shut off the water supply to the toilet before you start work. This is an important safety precaution that will prevent you from flooding your bathroom.
  • Make sure the new toilet is the right size for your bathroom. If the toilet is too large, it will not fit in your bathroom. If the toilet is too small, it will not be comfortable to use.
  • Follow the instructions carefully when installing the new toilet. This will help you avoid making mistakes and ensure that the toilet is installed correctly.

By following these tips, you can avoid common mistakes and ensure a successful toilet replacement project.

Step Measurement Instructions
1 Toilet Bowl Height Measure from the floor to the center of the drain hole in the toilet bowl.
2 Toilet Bowl Depth Measure from the front of the toilet bowl to the back of the toilet bowl.
3 Toilet Bowl Width Measure from the left side of the toilet bowl to the right side of the toilet bowl.
4 Toilet Bowl Bolt Location Measure the distance between the two bolts on the back of the toilet bowl.

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Replacing a toilet is a relatively simple task that can be completed in a few hours. However, it is important to measure the toilet correctly before you begin the replacement process. This will ensure that you purchase the correct size toilet and that the new toilet fits properly in your bathroom.

In this guide, we will walk you through the steps of measuring a toilet so that you can replace it with confidence. We will also provide tips on how to choose the right toilet for your bathroom.

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Tools and Materials Needed

The following tools and materials are needed to measure a toilet:

  • Tape measure
  • Pencil
  • Level
  • Combination square
  • Saw
  • Pliers
  • Tape
  • Gloves
  • Safety glasses

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Measuring the Toilet

To measure a toilet, you will need to measure the following three dimensions:

  • The distance from the wall to the center of the toilet bolts.
  • The distance from the floor to the top of the toilet tank.
  • The distance from the front of the toilet to the back of the toilet.

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Measuring the Distance from the Wall to the Center of the Toilet Bolts

To measure the distance from the wall to the center of the toilet bolts, you will need to do the following:

1. Place the tape measure against the wall behind the toilet.
2. Extend the tape measure to the center of the toilet bolts.
3. Read the measurement on the tape measure.

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Measuring the Distance from the Floor to the Top of the Toilet Tank

To measure the distance from the floor to the top of the toilet tank, you will need to do the following:

1. Place the tape measure against the floor in front of the toilet.
2. Extend the tape measure to the top of the toilet tank.
3. Read the measurement on the tape measure.

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Measuring the Distance from the Front of the Toilet to the Back of the Toilet

To measure the distance from the front of the toilet to the back of the toilet, you will need to do the following:

1. Place the tape measure against the front of the toilet.
2. Extend the tape measure to the back of the toilet.
3. Read the measurement on the tape measure.

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By following these steps, you can easily measure a toilet and ensure that you purchase the correct size toilet for your bathroom. For more information on replacing a toilet, please consult a qualified plumber.

How to Measure to Replace a Toilet?

Replacing a toilet is a relatively simple task, but it is important to measure the old toilet before you buy a new one. This will ensure that the new toilet fits in the same space and that you have the right parts.

To measure a toilet, you will need a tape measure and a pencil.

1. Measure the Distance Between the Bolts

The first step is to measure the distance between the bolts on the back of the toilet. This measurement will determine the type of toilet you need to buy.

To take this measurement, place the tape measure between the two bolts on the back of the toilet. The measurement should be taken from the center of one bolt to the center of the other bolt.

2. Measure the Height of the Toilet

The next step is to measure the height of the toilet. This measurement will help you determine how much clearance you need underneath the toilet.

To take this measurement, place the tape measure from the floor to the top of the toilet seat.

3. Choose the Right Toilet

Once you have measured the old toilet, you can start shopping for a new one. Make sure the new toilet is the same size as the old toilet. You should also choose a toilet that is the right height for your needs.

4. Installing the New Toilet

Installing a new toilet is a relatively simple task. However, it is important to follow the instructions carefully to avoid any problems.

To install the new toilet, you will need a new wax ring, a new toilet flange, and a new toilet seat.

5. Connect the Water Supply Line to the Toilet

The water supply line is the pipe that connects the toilet to the water supply. To connect the water supply line to the toilet, you will need to remove the old water supply line and install the new one.

6. Connect the Drain Line to the Toilet

The drain line is the pipe that connects the toilet to the sewer line. To connect the drain line to the toilet, you will need to remove the old drain line and install the new one.

7. Connect the Toilet Seat to the Toilet

The toilet seat is the part of the toilet that you sit on. To connect the toilet seat to the toilet, you will need to attach the toilet seat bolts to the toilet.

Replacing a toilet is a relatively simple task, but it is important to follow the instructions carefully to avoid any problems. By measuring the old toilet before you buy a new one, you can ensure that the new toilet fits in the same space and that you have the right parts.

How do I measure for a toilet?

To measure for a toilet, you will need to know the following dimensions:

  • The rough-in measurement, which is the distance from the back of the toilet to the center of the drain pipe. This measurement is typically 12 inches, but it can vary depending on the toilet model.
  • The toilet bowl width, which is the distance between the two outside edges of the toilet bowl. This measurement is typically 18 inches, but it can vary depending on the toilet model.
  • The toilet bowl depth, which is the distance from the front of the toilet bowl to the back of the toilet bowl. This measurement is typically 28 inches, but it can vary depending on the toilet model.

Once you have these measurements, you can compare them to the dimensions of the toilets you are considering to find one that will fit in your bathroom.

What if my rough-in measurement is not 12 inches?

If your rough-in measurement is not 12 inches, you will need to purchase a toilet that is specifically designed for that measurement. There are toilets available with rough-in measurements of 10 inches, 14 inches, and 16 inches.

What if my toilet bowl width or depth is not standard?

If your toilet bowl width or depth is not standard, you may need to purchase a toilet that is specifically designed for that measurement. There are toilets available in a variety of widths and depths, so you should be able to find one that fits in your bathroom.

How do I install a toilet?

Installing a toilet is a relatively straightforward process, but it is important to follow the instructions carefully to ensure that the toilet is installed correctly. Here are the basic steps involved in installing a toilet:

1. Remove the old toilet.
2. Inspect the plumbing and make any necessary repairs.
3. Position the new toilet and mark the locations of the mounting bolts.
4. Drill holes for the mounting bolts and install the toilet flange.
5. Attach the toilet to the flange with the mounting bolts.
6. Connect the water supply line to the toilet.
7. Connect the drain line to the toilet.
8. Seal the toilet to the floor with plumber’s putty.
9. Replace the toilet seat.

For more detailed instructions on how to install a toilet, you can consult a plumbing or home improvement manual.

What are the different types of toilets?

There are a variety of different types of toilets available on the market, each with its own advantages and disadvantages. The most common types of toilets are:

  • One-piece toilets: These toilets are made from a single piece of porcelain, which makes them easy to clean and maintain. However, they can be more expensive than two-piece toilets.
  • Two-piece toilets: These toilets are made from two separate pieces: the toilet bowl and the toilet tank. Two-piece toilets are typically less expensive than one-piece toilets, but they can be more difficult to clean and maintain.
  • Floor-mounted toilets: These toilets are mounted directly to the floor. They are typically the most affordable type of toilet, but they can be difficult to install.
  • Wall-mounted toilets: These toilets are mounted to the wall behind the toilet bowl. They are typically more expensive than floor-mounted toilets, but they can be easier to clean and maintain.
  • Elongated toilets: These toilets have a longer bowl than standard toilets, which makes them more comfortable to sit on.
  • Round-front toilets: These toilets have a shorter bowl than elongated toilets, which makes them more compact.

When choosing a toilet, you will need to consider your budget, the size of your bathroom, and your personal preferences.

replacing a toilet is a relatively simple task that can be completed in a few hours. However, it is important to measure the toilet carefully before you begin, to ensure that you purchase the correct size. By following the steps in this guide, you can easily replace your old toilet with a new one, and enjoy a more comfortable and efficient bathroom experience.

Here are some key takeaways to remember when replacing a toilet:

  • Measure the rough-in dimensions of your toilet before you purchase a new one.
  • Shut off the water supply to the toilet and flush it to drain the water.
  • Remove the old toilet by disconnecting the water supply line, the drain line, and the bolts that hold it to the floor.
  • Clean the toilet flange and install the new toilet.
  • Connect the water supply line, the drain line, and the bolts that hold the toilet to the floor.
  • Turn on the water supply to the toilet and test it to make sure it is working properly.

Author Profile

Liana Farrell
Liana Farrell
Liana Farrell is the owner of toiletty.com. She is a mom of two and is very passionate about home improvement.

Liana has ten years of home improvement experience, and in her own words, she said: “I love improving the home, and I’m very passionate about keeping the home in the best possible condition. I love it!”

Liana Farrell balances beauty and functionality when she goes about her home improvement jobs.