How do you measure for a bathroom sink replacement?

Author: Dr. Ansley Renner  |  Last update: Saturday, January 6, 2024

If you're replacing an existing sink with the same style, simply measure the length, width, and depth of your current sink and choose a replacement with the same measurements. If choosing a new style, measure the length and width of your vanity's existing cutout, along with the depth of your old sink.

Are bathroom sinks a standard size?

Most round bathroom sink bowls are 16 to 20 inches in diameter, while most rectangular sinks are 19 to 24 inches wide and 16 to 23 inches front to back. The typical basin depth is 5 to 8 inches.

Are sinks measured from inside or outside?

Use inside measurements to find a sink with similar measurements. Ensure you place your measuring tape at the top of the sink and measure the length (side to side), width (front to back), and depth (from the middle of the basin to the top of the sink).

How are vanity sinks measured?

For length and width, measure from one outer sink lip to the opposite side (for most sinks), or from the edge of the counter to the other edge lengthwise (for undermount). For round and oval sinks, measure the diameter, or the length across the widest point of the sink.

Will a 30 inch sink fit in a 33 inch cabinet?

You need a 36" cabinet. A 33" cabinet will only fit a 30" sink.

How to... Measure a bathroom basin

How do I know if my sink is drop-in or undermount?

Undermount sinks are installed below the countertop. The countertop covers the rim of this sink, so no part of the sink rests on top of the counter. Drop-in sinks are also called top-mount or self-rimming sinks. These sinks have a rim that rests on top of the counter's surface.

What are standard undermount sink sizes?

Standard-sized kitchen sinks measure 22 inches by 30 inches.

While the front-to-back measurement of the sink typically remains the same (roughly 22 inches) due to the size of most cabinets, the length of various kitchen sinks can vary immensely. This size range will cover most of the options you'll find when shopping.

What is the most common undermount sink size?

What Are the Most Common Sink Sizes?
  • 25 Inches. ...
  • Blanco Double-Basin Undermount Stainless Steel Sink.
  • 30 Inches. ...
  • Blanco Granite Double-Basin Farmhouse Kitchen Sink.
  • 33 Inches. ...
  • Kohler Stainless Steel Single-Basin Undermount Kitchen Sink.
  • 36 Inches. ...
  • Finding the Right Sink for Your Home.

What is the standard sink measurement?

The standard sink size is about 22 inches long to 30 inches wide, but once again it's crucial to take proper measurements. If you're replacing a drop-in sink with rims, start measuring from the outer lip of the sink, not the basin itself. If you have an undermount sink, start measuring where the edge meets the counter.

What is the height and width of sink?

Small: From 15 to 20 inches long and nine to 12 inches wide, with a depth between 5-3/4-in. and seven inches. Medium: From 20 to 30 inches long, 19 to 24 inches wide and about seven inches deep. Large: From 30 to 50 inches long, 19 to 24 inches wide and about five inches deep.

How do I find the model number of my bathroom sink?

The model number is located on the underside of the sink, either molded into the sink material or stamped with ink. Typically the model number starts with a K, such as K-5942. In some cases, the model number is preceded by 97 or 87.

What are the standards for bathroom sinks?

BATHROOM SINK SIZES

Round sinks are generally 16 to 20 inches in diameter. Rectangular sinks are generally 19 to 24 inches wide, 16 to 23 inches deep, and actual sink depth, from top of the basin to drain, is usually 5 to 8 inches. Sink height is usually 29 to 36 inches, for pedestal and console-style sinks.

What size sink fits in a 24 inch vanity?

The average 24″ sink base cabinet comfortably accommodates a standard 22″ sink; be sure to consider the depth of your sink when planning storage inside the base cabinet.

What are the various sink sizes?

What Size Is a Standard Kitchen Sink?
  • Initial Considerations. ...
  • 22-inch sinks. ...
  • 24-inch sinks. ...
  • 30-inch sinks. ...
  • 33-inch sinks. ...
  • 36-inch sinks. ...
  • 45-inch sinks.

How does an undermount sink fit?

Undermount sinks are attached directly to the underside of the countertop. They work best with solid-surface countertops, such as granite or marble, because they need the strength for support. They can be attached with various methods, including a two-part epoxy, clips and brackets.

How many sink sizes are there?

Sink sizes

The dimensions can differ from nine inches in length, up to 40 inches for large sinks. Single-bowl sinks, on average, measure up to 30 inches in length. Standard double-bowl kitchen sink sizes are 22 inches by 33-36 inches. The standard depth of a kitchen sink is eight to 10 inches.

Can you replace an undermount sink without removing the countertop?

Simply put, yes, you can replace an undermount sink without having to remove the countertop. After the plumbing and garbage disposal are disconnected, the clips that hold the sink to the countertop from below must be removed. Then, the final step is to break the silicone adhesive bond and pull the sink out.

Are undermount sinks hard to replace?

Many undermount sink types are attached to the countertop with silicone sealant and metal clips. Use a utility knife to cut through the silicone, then unscrew the clips. Removing and installing an undermount sink is a two-person job.

Does a plumber install an undermount sink?

Can I Hire a Plumber for Undermount Sink Installation? Installing a sink is no small task, so you may want to hire a plumber to ensure it's connected properly and leak-free. Plumbers charge between $45 and $200 per hour on average. Installing a sink only takes about an hour.

What gauge of sink is best?

A better quality stainless steel kitchen sink is the 18-gauge, which is 0.0500 inches. Many home improvement choices recommend 16 to 18 gauges as a good choice for a stainless steel kitchen sink. The more costly, a 16-gauge stainless sinks is often touted as a luxury sink and are 0.0625 inches thick.

Can you put a 30 inch sink in a 30 inch sink base?

While other sinks are named after their TRUE 30" basin size [This will NOT fit]. Which means you CAN fit some "thirty" inch sinks in a 30" kitchen sink base cabinet. However, definitely take a look at each sink's specifications to make sure it will fit in your cabinet.

How do you determine the minimum cabinet size for an undermount sink?

Measure the opening width under your existing sink (or where the new one will be installed) from left to right. This measurement is your cabinet size. Then, allow at least 2-3 inches on both sides for mounting hardware. For example, a 36" cabinet can accomodate a 30-32" sink.

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