Wash Basin Dimensions Explained: Find the Right Washroom Basin Size

Common Wash Basin Sink Dimensions

1. Rectangular & Oval Wash Basin Dimensions

•   Small: 15” - 20” length, 9” - 12” width & 5¾” - 7” depth are common wash basin small size measurements.
•   Medium: 20” - 30” length, 19” - 24” width & about 7” depth is the standard dimension of wash basin in medium size.
•   Large: 30” - 50” length, 19” - 24” width & about 5” depth is the standard dimension of wash basin in large size. This large wash basin size works better as wall mounts than as drop-ins.

With the wash basin dimensions of an oval sink, take the length as the longer axis and the width as the shorter one. If a product description mentions diameter, that will refer to the length and width.

2. Round Wash Basin Dimensions

• Small: 7” - 10” in diameter is the wash basin small size dimensions for round sinks.
  
  
• Medium: 11” - 15” in diameter is the most common bathroom wash basin size range.
  
  
• Large: 16” - 20” in diameter is standard wash basin dimensions.

For most round wash basin dimensions, depth will vary from 5” - 8”.

3. Wall-Mount Wash Basin Dimensions

While bathroom wash basin size for wall-mount sinks can vary a lot, length is typically 16” - 23”, with 15” - 18” width and 5” - 8” depth being the more common bathroom basin size ranges. By design, these sinks are space-savers and there’s no doubt you can find the perfect basin size for bathroom layouts of any dimension. Remember, only a good bathroom design can transform a basic, functional space into a tranquil oasis that provides relaxation and comfort.

4. Vessel Wash Basin Dimensions

While still keeping your wash basin small, these over-counter sinks can be wider and deeper than others, depending on the height of your vanity. The wash basin standard size range for round vessel sinks is 14” - 20” in diameter & 4”- 7” deep. Rectangular and square ones may have a shallower wash basin with a minimum size and run 15” - 25” long & 16” - 20” “wide.

5. Pedestal Wash Basin Dimensions

Remember that wash basin full pedestal dimensions are outside dimensions. While the classic length is between 22” & 28”, these days length usually varies from 15½” - 30”. The width can also vary, but is usually between 17” and 20”. As for the standard wash basin height of wash basin full pedestal, it is usually 29” - 34” tall.

6. Countertop Wash Basin Dimensions

Countertop wash basins add a chic touch to any bathroom. Typically, these basins range from 16 to 24 inches in width and 5 to 8 inches in height. However, the exact size can vary depending on the specific design and style. When selecting your basin, ensure it fits comfortably on your countertop design.

7. Under-Mount Sinks Dimensions

Under-mount sinks, installed beneath the counter, provide a sleek look. The standard measurements for these sinks are usually around 20 to 24 inches in width and 6 to 8 inches in depth. However, dimensions can differ based on the model and manufacturer. So, always verify the countertop cut-out dimensions before installation.

8. Semi-Pedestal Sinks

Semi-pedestal sinks, which are wall-mounted with a partial pedestal hiding the plumbing, typically measure around 18 to 24 inches in width and 5 to 8 inches in height. The depth of the sink can vary, but it's usually between 14 to 20 inches. These sinks are excellent for smaller bathrooms where saving floor space is essential.