Kitchen Sinks
Kitchen sink sizes and what cabinet each one needs
A 33-inch sink does not fit a 33-inch cabinet. Here is the arithmetic, the measurements to take, and where the disposal fits into it.
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Short answer
Subtract about three inches from your base cabinet's width to get the largest sink that fits: a 33-inch cabinet takes a 30-inch sink, a 36-inch cabinet takes a 33-inch sink. The missing inches are the cabinet sides and the mounting hardware. Always check the manufacturer's stated minimum cabinet size, which accounts for both.
Sink sizing looks obvious and trips up a great many people, because the number on the box is the sink and the number on the cabinet is the cabinet, and nobody says out loud that they are not the same measurement.
The arithmetic
| Base cabinet | Largest sink (typical) | Manufacturer example |
|---|---|---|
| 30 in | 27 in | Check per model; options are limited at this width |
| 33 in | 30 in | Kraus Kore KWU110-30 states 33 in minimum left to right |
| 36 in | 33 in | Blanco Diamond 33-1/2 in states a 36 in minimum |
| 36 in (apron) | 35-11/16 in | Kohler Whitehaven K-6489 states a 36 in minimum |
Apron-front sinks are the exception that looks like a contradiction: the Whitehaven is 35-11/16 inches wide in a 36-inch cabinet, because an apron sink's front face replaces the cabinet's front face rather than sitting inside the opening. That only works because the cabinet is modified — see farmhouse sinks.
The four measurements to take
- Cabinet width, measured inside. Not the door, not the face frame — the internal clear width. This is the number that constrains everything.
- Cabinet depth, front to back inside. Sinks are typically 18 to 22 inches front to back and need clearance behind for the faucet tailpiece and supply lines.
- Countertop depth and overhang, so you know where the faucet holes will fall relative to the sink's back edge.
- Underside of sink to the center of the trap arm. This is the measurement that decides whether a garbage disposal fits, and it is the one people never take until it is too late.
Where a disposal changes the numbers
A garbage disposal hangs below the sink's drain opening and takes vertical space that the bowl depth also wants. Disposals in this category run from about 11-1/2 inches tall for a compact half-horsepower unit to nearly 15 inches for a batch-feed model, and if the unit's discharge outlet ends up below your trap arm, the plumbing has to be reworked rather than reconnected.
So if a disposal is in the plan, choose bowl depth and disposal together rather than in sequence. A 10-inch bowl plus a 15-inch disposal in a standard 34-1/2-inch cabinet is a tight fit that may not leave room for a trap at the right height. Our disposal sizing and fit page has the numbers for common units.
Quick picks
Tap any row to jump to the full write-up. There are no scores here because we run no test lab — how picks are chosen is published in full on our methodology page.
| # | Product | Best for | Our read | Price |
|---|---|---|---|---|
| 1 |  Kraus Kore KWU110-30 workstation sink Best 30-inch sink | Small kitchens that need counter space | Needs a 33-inch cabinet; rear-offset drain | Check price on Amazon #ad Affiliate link · We publish no price; Amazon shows the current one |
| 2 |  Blanco Diamond Silgranit super single Best 33-inch sink | Hard water and visible sinks | 33-1/2 inches wide, 36-inch cabinet minimum | Check price on Amazon #ad Affiliate link · We publish no price; Amazon shows the current one |
| 3 |  Kohler Whitehaven K-6489 Best 36-inch apron sink | Farmhouse looks without a custom cabinet | 35-11/16 wide, 36-inch cabinet, self-trimming | Check price on Amazon #ad Affiliate link · We publish no price; Amazon shows the current one |
Depth, and how much is useful
Nine to ten inches is the practical sweet spot. Ten inches lays a sheet pan flat, hides a load of dishes and gives a tall faucet somewhere to put its stream. Deeper than that and you pay in reach — a 12-inch bowl in a standard-height counter means bending for anything at the bottom — and in disposal clearance.
Shallower than about eight inches and a tall faucet will splash, which is the height and reach question from the other direction.
Common sizes and who they suit
- 27-30 inch single bowl: apartments, galley kitchens, and anywhere the cabinet run is tight. A workstation ledge earns its keep most at this size.
- 30-33 inch single bowl: the standard for a modern kitchen with a dishwasher. Takes everything flat.
- 33 inch double bowl: two bowls of roughly 15 inches each. Right if you wash by hand; limiting otherwise.
- 36 inch apron front: a feature sink that needs a modified 36-inch cabinet and, for cast iron, a support frame.
Photograph shows the product category, not this specific unit. We do not republish manufacturer product photography.
1. Best 30-inch sink
Kraus Kore KWU110-30 workstation sink
Kraus · Best for small kitchens that need counter space
The workstation sink we would buy, and the clearest case for 16-gauge steel anywhere in this category: a ledge sink is the one configuration where basin flex is genuinely audible, because accessories rest on the rim and transmit it. Ten inches deep, rear-offset drain, and the grid, mat, board and strainer are in the box rather than a $200 upsell.
Published specifications
- Overall size
- 30" x 19" source
- Bowl size
- 28" x 16" source
- Bowl depth
- 10" source
- Gauge
- 16-gauge stainless steel source
- Minimum cabinet
- 33" left to right, 24" front to back source
- Drain
- Rear offset, 3-1/2" opening source
- Sound damping
- NoiseDefend pads covering over 80% of the basin, plus undercoating source
- Warranty
- Kraus limited lifetime source
What works
- The integrated ledge turns a 30-inch sink into prep counter, the best single trade available in a small kitchen
- Rear-offset drain leaves usable cabinet space under the front of the sink
- Genuine 16-gauge with pads over 80% of the basin — gauge and damping do different jobs, and this sink has both
- A 3-1/2" drain opening takes a standard disposal flange with no adapter
What does not
- Needs a 33-inch cabinet for a 30-inch sink — measure before ordering
- A 10-inch deep bowl is a long reach for a shorter person
- The accessories are the reason to buy it and also the reason it costs more than a plain undermount
Skip it if
Skip it if your run of counter is already generous — you would be paying for prep space you do not need, and a plain 18-gauge undermount will serve.
#ad Affiliate link · We publish no price; Amazon shows the current one
Raw specifications: Kraus’s own page for the Kraus Kore KWU110-30 workstation sink.
Photograph shows the product category, not this specific unit. We do not republish manufacturer product photography.
2. Best 33-inch sink
Blanco Diamond Silgranit super single
Blanco · Best for hard water and visible sinks
The granite composite sink that answers the material's usual objection. Silgranit is up to 80% ground granite in an acrylic binder, and what it does better than stainless is hide everything: no water spots, no visible scratch pattern, no dent from a dropped pan. What it does worse is take a screaming-hot pan straight off the burner.
Published specifications
What works
- Hides limescale and water spotting better than any stainless finish — the reason to choose it in hard water
- Color runs through the material, so a scratch does not expose a different substrate
- Quieter than stainless without added pads, because the mass does the damping
- A 9-1/2" bowl is deep enough to lay a sheet pan flat
What does not
- Composite is not stainless: thermal shock is a real limit, so a very hot pan goes on a trivet
- Light colors show tea and turmeric staining more than dark ones
- Blanco publishes no thermal-limit figure, so we will not print one
Skip it if
Skip it if you routinely dump hot pans and boiling stock straight into the sink. Stainless tolerates that; composite is the wrong tool for it.
#ad Affiliate link · We publish no price; Amazon shows the current one
Photograph shows the product category, not this specific unit. We do not republish manufacturer product photography.
3. Best 36-inch apron sink
Kohler Whitehaven K-6489
Kohler · Best for farmhouse looks without a custom cabinet
The enameled cast-iron farmhouse sink to buy, mainly for one structural reason: the self-trimming apron overhangs the cabinet face, so installation is a rough cut rather than a cabinetmaker's fit. That detail is the difference between a weekend job and a trade job. It is also heavy enough that the cabinet needs real support.
Published specifications
What works
- Self-trimming apron means a rough cabinet cut, not a precision one
- Enameled cast iron resists chipping, cracking and heat in a way composite does not
- The 2-degree slope and offset drain genuinely reduce standing water
- Kohler stocks matching drains and accessories, so the sink does not orphan
What does not
- Cast iron is heavy — the cabinet needs a proper support frame, and that is the real installation cost
- Enamel dulls under abrasive cleaners, and a dropped cast pan will chip it
- Kohler does not publish a unit weight on the range page, so plan support using your retailer's shipping weight
Skip it if
Skip it if you are installing alone, or over an existing base cabinet you cannot reinforce. Weight decides this one, not looks.
#ad Affiliate link · We publish no price; Amazon shows the current one
Raw specifications: Kohler’s own page for the Kohler Whitehaven K-6489.
What to take away
- Cabinet width minus about three inches gives the largest sink. Then verify the manufacturer's stated minimum.
- Overall dimensions and bowl dimensions are different numbers, and you need both.
- Take the underside-of-sink to trap-arm measurement before choosing bowl depth if a disposal is involved.
- Apron sinks break the arithmetic because the cabinet face is modified — that is why a 35-11/16 sink fits a 36-inch cabinet.
How we sourced this page
Every figure on this page came from one of the following. Where a manufacturer or an independent lab does not publish a number, we say so rather than estimate it.
Common questions
- What size sink fits a 33-inch cabinet?
- A 30-inch sink. Kraus, for example, states a 33-inch minimum cabinet left to right for the 30-inch Kore. The missing three inches are the cabinet sides and the mounting hardware, which is why a 33-inch sink does not fit a 33-inch cabinet.
- How do I measure for a new kitchen sink?
- Four measurements: the internal width of the base cabinet, its internal depth front to back, the countertop depth including overhang, and the distance from the underside of the sink to the center of your trap arm. The last one is the one that decides whether a garbage disposal fits.
- Will a 33-inch sink fit in a 36-inch cabinet?
- Yes — that is the standard pairing. A 33-inch sink in a 36-inch base cabinet leaves room for the cabinet sides and the mounting hardware. Check the manufacturer's stated minimum anyway, because a few deep or ledge sinks need more front-to-back clearance than you would expect.
- How deep should a kitchen sink be if I have a garbage disposal?
- Nine to ten inches usually works, but take the measurement from the underside of the sink to your trap arm first. Disposals run from about 11-1/2 to 15 inches tall, and a deep bowl plus a tall disposal in a standard cabinet can leave no room for the trap at the right height.
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Found something out of date, or a figure you can source better than we did? Tell us — corrections get read first. Our methodology explains how picks are made, and contact is one click away.