Choosing the right kitchen sink size is key to creating a functional and comfortable kitchen. This guide explains standard sink sizes, cabinet requirements, and the differences between single and double bowl sinks, helping you select the best option for your space and lifestyle.
Choosing the right kitchen sink isn’t just about material or style, size matters just as much. A sink that’s too small can feel impractical, while one that’s too large can overwhelm your benchtop or cabinetry. Understanding standard kitchen sink sizes and how they relate to your layout will help you choose a sink that looks right and works well every day.
Here’s a practical guide to kitchen sink sizes and how to find the best fit for your space.
1. Start With Your Cabinet Size
The most important measurement isn’t the sink itself — it’s the cabinet underneath. Your sink must fit comfortably within the base cabinet, allowing space for mounting, plumbing, and installation.
Common sink cabinet sizes:
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450–600mm cabinet → compact or single bowl sinks
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700–800mm cabinet → standard single bowl or small double bowl sinks
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900mm+ cabinet → large single bowl or full double bowl sinks
Check the minimum cabinet size specified for the sink before purchasing.
2. Single Bowl Sinks: Simple and Spacious
Single bowl sinks are one of the most popular choices for modern kitchens, especially where space or simplicity is a priority.
Typical single bowl sink sizes:
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Width: 450–600mm
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Depth: 180–220mm
Best for:
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Small to medium kitchens
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Households using dishwashers
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Washing large pots, trays, and baking dishes
A larger single bowl offers maximum usable space and a clean, uncluttered look.
3. Double Bowl Sinks: Flexible and Functional
Double bowl sinks provide separate areas for washing and rinsing, which can be helpful in busy kitchens.
Typical double bowl sink sizes:
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Width: 780–900mm
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Depth: 180–220mm
Best for:
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Larger kitchens with wider cabinets
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Homes without a dishwasher
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People who like to multitask at the sink
Keep in mind that each bowl is smaller than a single bowl, so consider how you use your sink daily.
4. Sink Depth: More Important Than You Think
Depth affects both comfort and usability. A deeper sink can hold more dishes and reduce splashing, but it should still be comfortable to use.
Common sink depths:
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180–200mm – standard and comfortable for most users
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200–220mm – ideal for larger cookware and busy kitchens
If multiple people in the household use the kitchen, aim for a depth that balances capacity with ergonomic comfort.
5. Sink Size vs Benchtop Space
Your sink should feel proportional to your benchtop. Oversized sinks can crowd preparation areas, while undersized sinks may feel out of place.
Consider:
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How much bench space you need for food prep
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Whether accessories like drainers or covers are required
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The overall visual balance of your kitchen layout
In compact kitchens, a well-chosen single bowl sink often provides the best balance.
6. Measuring Correctly Before You Buy
Before choosing your sink, take these measurements carefully:
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Cabinet internal width
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Benchtop cut-out size (if replacing an existing sink)
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Distance to tap holes and splashbacks
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Space for plumbing underneath
Accurate measurements help avoid installation issues and unnecessary returns.
7. Matching Sink Size to Your Lifestyle
The “right” sink size depends on how you use your kitchen.
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Small households / apartments: compact or standard single bowl
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Families / frequent cooking: larger single bowl or double bowl
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Minimalist kitchens: single bowl for clean lines
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Traditional kitchens: double bowl for classic functionality
Final Thoughts
Kitchen sink size plays a major role in both functionality and comfort. By understanding cabinet requirements, bowl configurations, and depth options, you can choose a sink that fits your space perfectly and supports your everyday routine.
A well-sized sink makes daily kitchen tasks easier, keeps your benchtop feeling balanced, and ensures your kitchen works as beautifully as it looks.
If you’re planning a kitchen upgrade, taking the time to choose the right sink size is a simple decision that delivers long-term benefits.
