Furniture · Reference
A standard bathroom vanity is about 32 in (81 cm) high and 21 in (53 cm) deep, though 34–36 in (86–91 cm) "comfort height" is now common. Widths run 24–48 in for single sinks and 60–72 in for doubles.
A bathroom vanity cabinet is measured by width × depth × height; the countertop and sink add to the finished height and total depth.
| Dimension | Standard | Notes |
|---|---|---|
| Height (traditional / NKBA) | 32–34 in (81–86 cm) | Historic standard; suits shared or child use |
| Height (comfort) | 36 in (91 cm) | Reduces bending; modern preference |
| Depth (standard) | 21 in (53 cm) | Wall to cabinet face, excl. overhang |
| Depth (slim) | 8–18 in (20–46 cm) | Powder rooms and narrow baths |
| Configuration | Width range | Typical use |
|---|---|---|
| Single sink | 24–48 in (61–122 cm) | Powder rooms, guest and single-user baths |
| Double sink | 60–72 in (152–183 cm) | Shared / master baths, two basins |
| Width | Metric | Configuration |
|---|---|---|
| 24 in | 61 cm | Single — small / powder bath |
| 30 in | 76 cm | Single — common |
| 36 in | 91 cm | Single — common |
| 48 in | 122 cm | Single, or tight double |
| 60 in | 152 cm | Double — minimum for two sinks |
| 72 in | 183 cm | Double — master bath |
A spec table only helps if the buyer reads it. Many don't — shoppers routinely try to judge a product's size straight from the images, and wrong size or fit is the most-cited reason things get returned. The fix is to mark the real dimensions on the photo itself, where the buyer is already looking.
SizeMarker snaps dimension lines to the bathroom vanity's edges and exports at Amazon or Alibaba size, so the measurement is accurate and legible — not a guess typed over the picture. That answers the size question up front and cuts pre-sale questions and size-driven returns.
Related: Furniture spec diagram maker · Product spec sheet maker · Best tools to add dimensions to product photos · Ecommerce returns & size statistics
The traditional standard is 32–34 in (81–86 cm), but most new vanities are built at 34–36 in (86–91 cm) "comfort height" to reduce bending; taller users sometimes go up to 40 in (102 cm).
A standard vanity is 21 in (53 cm) deep, measured wall to cabinet face before the countertop overhang. Slim vanities range 8–18 in (20–46 cm) for tight bathrooms and powder rooms.
A double-sink vanity generally needs at least 60 in (152 cm) of width and goes up to 72 in (183 cm); a 48 in (122 cm) unit only fits two small basins in a pinch.
Standard widths are 24, 30, 36 and 48 in (61–122 cm) for single sinks and 60 or 72 in (152 or 183 cm) for double vanities.
Building guidelines call for a minimum of 18 in (46 cm) from the vanity to the centerline of the toilet.
Every figure on this page is traced to a named source, linked under each table. Standard sizes come from published standards and established industry references; where a size is a typical range or varies by manufacturer, we say so. Sizes vary by region, model and revision — treat these as the standard reference, and confirm the exact spec of the item you are selling.
Mark accurate dimensions and specs on your product photos in minutes. Free to start.
Start free · 30 credits on sign-up