How to Measure a Toilet for Replacement

Why Accurate Measurements Matter

If your measurements aren’t accurate, the new toilet might not fit the space, or it could cause issues that require extra work and even a call to a plumbing repair service.

Tools You’ll Need

You don’t need anything fancy to measure a toilet. Here’s what you’ll need:

• A measuring tape
• A notepad and pen to jot down the measurements
• A flashlight (optional, for tight or dimly lit spaces)

If you’re unsure about the process, a plumbing service can assist you with the measurements to ensure everything is accurate.

Step 1: Measure the Rough-In Distance

The rough-in distance is the most crucial measurement for toilet replacement. This is the distance between the wall behind the toilet and the center of the toilet’s floor bolts. Here’s how to do it:

1. Locate the two bolts on either side of the toilet's base. These secure the toilet to the floor.
2. Use your measuring tape from the wall (not the baseboard) to the center of one of these bolts.
3. Write down the measurement.

Most toilets have a standard rough-in distance of 12 inches, but older homes might have rough-ins of 10 or 14 inches. If you’re replacing a toilet, the rough-in measurement will guide you in selecting a compatible model. If this step feels overwhelming, you can hire a plumber or a plumbing repair service.

Step 2: Measure the Bowl Size

Toilets come with either a round or elongated bowl. Measuring the size of the bowl will help you determine which style to purchase. Here’s how:

1. Start at the center of the toilet seat bolts at the back of the toilet.
2. Measure straight to the very tip of the bowl at the front.
3. Note the measurement. A round bowl is typically about 16.5 inches long, while an elongated bowl measures around 18.5 inches.

When choosing between round or elongated bowls for your toilet installation, consider the available space in your bathroom. A cramped bathroom might not have enough room for an elongated model.

Step 3: Check the Toilet Height

Toilets also come in different heights, ranging from standard to comfort. Here’s how to measure it:

1. Use the measuring tape to check the distance from the floor to the top of the toilet bowl (not including the seat).
2. Comfort-height toilets are slightly taller, which makes them an excellent choice for older adults or people with mobility issues.

Consider who will be using the toilet most often. If you’re unsure which height is best, a plumbing service or plumber can offer guidance.

Step 4: Measure the Space Around the Toilet

The space around the toilet is just as important as the measurements of the toilet itself. Here’s what to do:

1. Measure the distance from the center of the toilet to the nearest wall or object on either side.
2. Measure the clearance in front of the toilet from the front edge of the bowl to the nearest wall or obstacle.

Step 5: Double-Check Everything

Once you’ve taken all your measurements, double-check them to ensure accuracy. A slight mistake can lead to big problems during toilet installation. If you’re not confident in your measurements, don’t hesitate to contact a plumber.

When to Call a Professional

While measuring a toilet isn’t overly complicated, it’s not uncommon to feel unsure whether you’ve done it correctly. A plumber can ensure the job is done right if you're not confident in your abilities. Hiring a plumbing service can also save you time, especially if you’re dealing with an old toilet that’s difficult to remove or if the new toilet requires modifications to the existing plumbing.

Mr. Rooter Plumbing

Measuring a toilet for replacement is essential to ensure a smooth installation. If you’re unsure about any part of the process, don’t hesitate to contact Mr. Rooter Plumbing.