Sink Size Chart: Standard Kitchen & Bathroom Sizes 2026

How much counter a sink needs

A sink needs more counter than the sink itself. Allow 2 in of counter on each side of the sink and 3 in behind it for the faucet: the required width is the sink width plus 4 in, and the required depth is the sink depth plus 3 in. A sink fits when the counter is at least that wide and at least that deep. Sizes are industry-standard nominal sizes and brands vary by ±1/2 in, so check the label before you buy.

At the defaults — a 60 in wide counter, 25 in deep, with a kitchen single-bowl sink (30 in wide, 22 in deep) — the counter needs 30 + 4 = 34 in of width and 22 + 3 = 25 in of depth. The counter is 60 in wide and 25 in deep, so it FITS. The extra width is 60 − 34 = 26 in, and the extra depth is 25 − 25 = 0 in — the counter is exactly deep enough, with nothing to spare.

The worked example, line by line

Setup: counter width 60 in, counter depth 25 in, sink type kitchen single-bowl (30 in wide, 22 in deep).

Line 1 — the required width. 30 in of sink + 2 in of counter on each side = 34 in.

Line 2 — the required depth. 22 in of sink + 3 in behind it for the faucet = 25 in.

Line 3 — does it fit? The counter is 60 in wide and 25 in deep, and 60 ≥ 34 and 25 ≥ 25, so it FITS.

Line 4 — the extras. Extra width 60 − 34 = 26 in. Extra depth 25 − 25 = 0 in.

Reverse: the minimum counter width is 34 in for a single-bowl sink, 37 in for a double-bowl, 28 in for a utility sink, 20 in for a vessel sink, 23 in for a drop-in and 24 in for a pedestal; the minimum counter depth is 25 in for a single-bowl, double-bowl or utility sink, 19 in for a vessel or drop-in sink and 21 in for a pedestal.

Every branch, checked

36 x 25 in counter, single-bowl: the counter needs 34 x 25 in, and 36 ≥ 34 and 25 ≥ 25, so it FITS. The extra width is 2 in and the extra depth is 0 in — a 36-in counter is the smallest that fits a single-bowl sink with room to spare on the width.

32 x 25 in counter, single-bowl: the counter needs 34 x 25 in, and 32 is less than 34, so it DOES NOT FIT — width short by 2 in. The depth is fine at 25 in, but two inches of width is all that is missing.

60 x 24 in counter, single-bowl: the counter needs 34 x 25 in, and 60 ≥ 34 but 24 is less than 25, so it DOES NOT FIT — depth short by 1 in. One inch short is still short: the faucet has nowhere to go.

48 x 22 in counter, double-bowl: the counter needs 37 x 25 in, and 48 ≥ 37 but 22 is less than 25, so it DOES NOT FIT — depth short by 3 in. The width is fine, but a 22-in deep counter is the standard bathroom depth, not a kitchen depth.

48 x 22 in counter, drop-in: the same counter with a drop-in sink needs 23 x 19 in, and 48 ≥ 23 and 22 ≥ 19, so it FITS. The extra width is 25 in and the extra depth is 3 in. A smaller sink is the whole answer to a shallow counter.

36 x 22 in counter, vessel: the counter needs 20 x 19 in, and 36 ≥ 20 and 22 ≥ 19, so it FITS. The extra width is 16 in and the extra depth is 3 in. The vessel bowl sits above the counter, so the counter space it needs is the smallest on the chart.

30 x 22 in counter, utility: the counter needs 28 x 25 in, and 30 ≥ 28 but 22 is less than 25, so it DOES NOT FIT — depth short by 3 in. The utility sink is only 24 in wide, so the width fits with 2 in to spare — but the depth is the same 25 in a kitchen sink needs, and the counter is 3 in short.

28 x 20 in counter, pedestal: the counter needs 24 x 21 in, and 28 ≥ 24 but 20 is less than 21, so it DOES NOT FIT — depth short by 1 in. A pedestal is a small sink, but it still needs 21 in of depth, and this counter is one inch short.

60 x 25 in counter, double-bowl: the counter needs 37 x 25 in, and 60 ≥ 37 and 25 ≥ 25, so it FITS. The extra width is 23 in and the extra depth is 0 in — the same counter that fits a single-bowl exactly fits a double-bowl too, with 3 in less room on the sides.

Reverse — the other way round: the minimum counter width is 34 in for a single-bowl sink, 37 in for a double-bowl, 28 in for a utility sink, 20 in for a vessel sink, 23 in for a drop-in and 24 in for a pedestal; the minimum counter depth is 25 in for a single-bowl, double-bowl or utility sink, 19 in for a vessel or drop-in sink and 21 in for a pedestal.

What the defaults assume

The model assumes 2 in of counter on each side of the sink and 3 in behind it for the faucet, and the table’s industry-standard nominal sizes. It assumes the counter width and depth you enter are measured end to end and front edge to wall, and that the faucet mounts on the counter behind the sink — check them, because a counter measured to the backsplash is not the counter the sink sits in, and a wall-mount faucet needs no counter space at all. It leaves out the cabinet below, which must be at least as wide as the sink, and the plumbing underneath. Rounding convention: inches are shown to two decimals, the fit is a yes or no, and all figures are computed from unrounded values, rounded only for display.

Output · formula · meaning

Who uses this

• The homeowner picking a kitchen sink: they learn a 60 x 25 in counter fits a single-bowl sink with 26 in of extra width — so they know the layout works, and they check the 37-in double-bowl width before ordering the bigger sink.
• The renovator with a shallow counter: they learn a 48 x 22 in counter does not fit a double-bowl sink but fits a drop-in with 25 in of extra width — so they know the smaller sink is the answer, and they check the 19-in drop-in depth before cutting the hole.
• The bathroom designer choosing a vessel sink: they learn it needs only 20 x 19 in of counter — so they know the tall bowl costs no counter space, and they check the 16-in vessel width before specifying it.
• The DIYer measuring a laundry room: they learn a 30 x 22 in counter is 3 in short on depth for a utility sink — so they know the deep tub needs a deeper counter, and they check the 25-in minimum depth before ordering.

Accuracy & limitations

The math is exact for the numbers you enter: the counter needs the sink width plus 4 in and the sink depth plus 3 in, and it fits when the counter is at least that big in both directions. What the model cannot do is measure your counter: check the width and depth, because a backsplash eats the depth and a wall on one side eats the width. It assumes the faucet mounts on the counter behind the sink and leaves out the cabinet below, which must be at least as wide as the sink, and the plumbing underneath. Sizes are industry-standard nominal sizes and brands vary by ±1/2 in — check the label. For the cabinets the sink sits in, see cabinet size chart; for the toilet next to it, see toilet size chart.