Kitchen Sink Sizes: US, European and Asian Standards Compared

Sink sizes are one of the few specifications that are genuinely regional. A model that sells well in the United States can be too large for a European base unit and too deep for an Asian apartment kitchen, so importers who carry one size across all markets usually end up discounting stock. Here is how the main conventions differ.

United States: inches drive the specification

US kitchens are still specified in inches, and the common sink footprints follow a small number of standards. A 33 by 22 inch double bowl is the default replacement size, with 32 by 21 and 31 by 20 inch variants close behind. Single bowl sinks are frequently 30 by 22, 32 by 19 or 33 by 18 inches. Because these sizes are tied to existing countertop cut-outs in the replacement market, a supplier that cannot hold an exact footprint loses the installer channel.

Europe: the cabinet decides

European specifications are usually written from the base unit rather than the sink. A 600 mm cabinet takes a sink of roughly 500 to 560 mm overall width; an 800 mm or 900 mm cabinet is required for wider bowls and drainer combinations. Depth is commonly 440 to 500 mm. Because so much of the European range is sold as a sink-and-drainer unit, and because drawer clearance under the bowl is tighter, bowl depth is usually limited to around 180 to 200 mm.

Asia: metric, and often deeper

Asian markets work in metric sizes that map onto locally produced cabinetry, with 600 mm, 760 mm and 800 mm footprints recurring in residential projects. Handmade sinks in this region are frequently deeper, at 200 to 220 mm, because cabinet interiors tend to be built to suit the sink rather than the other way round. Commercial and hospitality specifications often go deeper still.

Bowl depth, and the one number that surprises people

Depth is where market expectations clash. A 220 mm bowl is normal in Asia and increasingly requested in the United States, but it can conflict with accessibility rules: sinks intended for accessible installations in the United States are generally limited to a bowl depth of about 165 mm, or six and a half inches. If you sell into public and commercial projects, depth is a compliance issue rather than a preference.

A sizing checklist for a new market

• Confirm the unit of specification used by the local trade - inches in the United States, millimetres almost everywhere else.
• Check the base cabinet width the sink must fit into, not just the sink width.
• Verify the existing cut-out dimensions if the product is aimed at the replacement market.
• Check bowl depth against local accessibility rules for public projects.
• Confirm the drain position, because a rear-set drain is required in some multi-function designs.

For the countertop side of the same problem, see the cut-out guide. Standard dimensions for a single bowl are covered in more detail in single bowl sink dimensions, and current footprints are listed across the single bowl and double bowl ranges.