Kitchen Sinks by Size: Find the Right Sink for Your Cabinet Width
Choosing a kitchen sink by size is one of the easiest ways to narrow down your options.
Your sink needs to fit the cabinet beneath it, so cabinet width is the first measurement to check. Once you know that, you can choose from the sink sizes and bowl layouts designed to work with your unit.
This guide explains which kitchen sink sizes suit common cabinet widths, what to check before ordering and why bowl depth and tap holes matter too.
Why Cabinet Width Matters
A kitchen sink is fitted into the worktop, but the bowls sit inside the cabinet below.
That means the cabinet width decides which sinks will fit. If the bowl is too wide for the cabinet, it can clash with the cabinet sides, plumbing or fittings underneath.
Always check the minimum cabinet width listed on the product before buying. This is more reliable than judging by the overall sink size alone.
Shop Kitchen Sinks by Cabinet Width
Kitchen sink cabinets often come in standard widths. Each width gives you different sink options.
400mm to 500mm Cabinets
A 400mm to 500mm cabinet usually suits a compact single bowl sink.
This is a good choice for small kitchens, flats, galley kitchens, utility rooms and secondary prep spaces. The aim is to get a practical bowl without taking up too much worktop or cabinet space.
At this size, a single bowl is usually the most useful option.
600mm Cabinets
A 600mm cabinet is one of the most common kitchen sink cabinet sizes.
It can often take a single bowl sink or a 1.5 bowl sink, depending on the product dimensions. This makes it a flexible size for many standard kitchens.
A 1.5 bowl is popular because it gives you a main washing bowl plus a smaller half bowl for rinsing, draining or food prep.
800mm Cabinets
An 800mm cabinet gives you more choice.
It may suit a larger 1.5 bowl sink or a double bowl sink, depending on the design. This size works well in busier kitchens where you want more washing and rinsing space.
If you are choosing a double bowl, check the bowl dimensions and any drainer width carefully.
1000mm Cabinets and Wider
A 1000mm or wider sink cabinet can suit larger double bowl sinks and wider designs with drainers.
This is best for generous kitchen runs, family kitchens and homes where the sink is used heavily every day.
At this size, you have more freedom to choose larger bowls, twin bowls and statement sink designs.
Which Sink Fits Which Cabinet?
As a guide, use the sink’s minimum cabinet size as your starting point.
A sink designed for a 600mm cabinet will usually be smaller than 600mm overall once the bowls, rim, cut-out and fitting requirements are considered. The cabinet size is not the exact sink size. It is the minimum unit width needed below.
You can usually fit a smaller sink into a wider cabinet, but you cannot fit a sink that needs a wider cabinet into a smaller one.
Kitchen Sink Size Guide by Cabinet Width
400mm Cabinet
A 400mm cabinet is best suited to a compact single bowl sink.
Choose a simple layout and avoid large drainers or extra bowls. A deeper bowl can help add capacity without increasing the width.
500mm Cabinet
A 500mm cabinet usually suits a compact single bowl sink.
Some designs may include a small drainer, but the bowl size should remain practical. If you want a second bowl, you may need to move up to a wider cabinet.
600mm Cabinet
A 600mm cabinet can often take a single bowl or a 1.5 bowl sink.
This is a strong all-round size for many kitchens. Choose single bowl if you want maximum washing space, or 1.5 bowl if you want added flexibility for rinsing and draining.
800mm Cabinet
An 800mm cabinet can often take a larger 1.5 bowl or a double bowl sink.
This is a good choice for busier kitchens where two sink areas are useful.
1000mm Cabinet
A 1000mm cabinet gives you room for larger double bowl sinks and wider layouts with drainers.
It suits bigger kitchens where the sink can take up more worktop space without crowding the layout.
Measuring for a Kitchen Sink
Before ordering, measure carefully.
Measure the Internal Cabinet Width
Measure the inside width of the sink cabinet.
Do not rely only on the external cabinet size or the door width. The sink bowls need to fit inside the unit below the worktop.
Check the Minimum Cabinet Size
Look at the sink’s minimum cabinet width in the product details.
This tells you the smallest cabinet the sink is designed to fit. If your cabinet is narrower than this, choose a smaller sink.
Check the Overall Sink Width
The overall sink width includes the bowl, rim and drainer if there is one.
This matters for the worktop space above, especially if the sink sits near a hob, wall, tall unit or corner.
Check the Worktop Cut-Out
Inset sinks need a cut-out in the worktop.
Make sure there is enough worktop around the cut-out for a secure fit, a neat seal and any tap holes. If you are replacing an old sink, check whether the new sink will cover or suit the existing cut-out.
Check the Bowl Depth
Bowl depth affects how the sink feels in use.
Deeper bowls offer more capacity for pans, trays and washing up. Shallower bowls can be more comfortable to use and leave more room below for storage, waste pipes or bins.
Many kitchen sinks are around 180mm to 220mm deep, but this varies by design.
Check Tap Holes
Tap holes need to match your chosen kitchen tap.
Some sinks have one tap hole, some have two, and some have no tap holes. Reversible sinks may have tap holes prepared on both sides or knock-out positions.
Always check before ordering, especially if buying the sink and tap separately.
Replacing an Existing Kitchen Sink
If you are replacing a sink, measure the cabinet rather than only measuring the old sink.
The old sink may not use the full cabinet width, and the new sink still needs to work with the unit below. You should also check the existing worktop cut-out, tap position and plumbing.
Choosing a sink that is too small for the existing cut-out can leave gaps. Choosing one that is too large can mean more worktop cutting or may not fit the cabinet.
Should You Size Down?
If you are between two sizes, sizing down is usually safer.
A sink designed for a slightly smaller cabinet can fit into a wider cabinet with room to spare. A sink that needs more width than your cabinet simply will not fit properly.
This is especially important with double bowl sinks and sinks with drainers, where overall width can increase quickly.
Bowl Layout by Size
The right sink size also depends on the bowl layout.
Compact Single Bowl Sinks
Compact single bowl sinks are best for 400mm and 500mm cabinets.
They make the most of narrow spaces and are ideal for small kitchens, flats and utility rooms.
Standard Single Bowl Sinks
A standard single bowl sink works well in many 600mm cabinets.
It gives you one generous washing area and is a practical choice if you regularly wash pans, trays and larger items.
1.5 Bowl Sinks
A 1.5 bowl sink is a popular option for 600mm cabinets and above.
It gives you a main bowl plus a smaller half bowl for rinsing, draining or food prep.
Double Bowl Sinks
Double bowl sinks usually need wider cabinets, often around 800mm or more.
They are best for busy kitchens where washing, rinsing and prep often happen at the same time.
Sinks with Drainers
A drainer adds useful drying space, but it also increases the overall footprint.
If your worktop run is tight, check that the drainer will not crowd the hob, wall or preparation area.
Kitchen Sink Size FAQs
What size kitchen sink fits a 600mm cabinet?
A 600mm cabinet can usually take a single bowl or 1.5 bowl sink designed for that unit size. Always check the sink’s minimum cabinet width, overall size and bowl dimensions before ordering.
How do I know what size sink to buy?
Measure the internal width of your sink cabinet, then choose a sink rated for that cabinet size. Check the bowl depth, worktop cut-out, tap holes and overall sink width too.
What size sink fits a 500mm cabinet?
A 500mm cabinet usually suits a compact single bowl sink. Some designs may include a small drainer, but the product must state that it is suitable for a 500mm cabinet.
Can I fit a wider sink than my cabinet?
No. The sink bowls need to sit within the cabinet below. If a sink needs an 800mm cabinet, it will not fit properly into a 600mm unit.
Can I fit a smaller sink in a larger cabinet?
Yes, in most cases. A sink rated for a smaller cabinet can usually fit in a wider cabinet, as long as the worktop cut-out, tap position and plumbing all work.
What size cabinet do I need for a double bowl sink?
Many double bowl sinks need an 800mm or wider cabinet, but exact requirements vary by product. Always check the minimum cabinet width before buying.
Find the Right Kitchen Sink Size at Plumbworld
Shopping by size is one of the easiest ways to find a kitchen sink that fits.
Start with your cabinet width, then choose the bowl layout that suits how you use the kitchen. Check the minimum cabinet size, bowl depth, tap holes, cut-out and drainer space before ordering.
Browse Plumbworld’s kitchen sinks by size, compact kitchen sinks, single bowl sinks, 1.5 bowl sinks, double bowl sinks and kitchen taps to find the right fit for your home.
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