Is There a Standard Sink Size?

If you’re wondering what the standard kitchen sink size is in Australia, there isn’t one fixed number. Most kitchen sinks range from 450mm to 900mm in length. The right size depends on how you cook, clean, and use your space. This guide covers the most common dimensions, how to pick the right fit, and what to think about before you buy.

What Are the Standard Kitchen Sink Sizes?

Most Australian kitchens use sinks between 600mm and 800mm long. Compact homes often choose a 450mm to 550mm single bowl sink, while larger kitchens can fit a double bowl kitchen sink up to 900mm. Depth usually ranges from 180mm to 250mm depending on bowl size and installation type.

The key is balancing function and proportion. A small sink may suit a minimalist apartment kitchen, while a wider model is ideal if you cook daily or clean large cookware. Stainless steel sinks are the most popular for their durable finish and easy maintenance, but fireclay and granite composite sinks offer design variety too.

This Alma sink is 600 x 500 and would be considered a "medium" sink size

How to Choose a Sink Size for Your Kitchen Layout

Before buying, think about your kitchen design, benchtop space, and how you’ll use the sink day to day. Start by measuring the countertop area, including the width and depth of your cabinet below. This defines the maximum bowl size and whether you’ll need a sink with drainer.

Ask yourself:

Is the sink going on a wall run or kitchen island?
Do you have space for a drainboard or second bowl?
Will your tapware fit comfortably behind the sink cutout?

If you’re doing a kitchen renovation, talk to your cabinet maker or plumber early on. They can confirm cabinet clearance, tap holes, and the right basket waste configuration for your plumbing setup.

Topmount vs Undermount Sink Installation

How your sink is installed affects its look and practicality. A topmount sink, also known as a drop-in, sits on top of the benchtop with the rim visible. It’s simple to install and replace, making it popular for standard renovations.

An undermount sink sits below the benchtop for a seamless look. It works best with stone or solid surface benchtops. Cleaning is easier because crumbs and water can be wiped directly into the sink. The trade-off is a more complex installation that can add to cost.

Flushmount sinks are installed level with the countertop. They create a high-end finish but require precise cutting and professional installation. If you’re upgrading to this look, confirm your stone fabricator can handle the exact cut out.

Does Material Affect Sink Size?

It does, but maybe not in the way you think. The material of your sink usually decides what sizes are available and how heavy the whole thing will be. Stainless steel sinks are the most flexible. They come in the widest range of sizes, they’re lightweight, and they work well for both topmount and undermount setups. They’re also tough, easy to clean, and suit pretty much any kitchen design.

If you want something that makes more of a statement, fireclay sinks and farmhouse sinks are your go-to. They’re heavier, often built with apron fronts, and tend to become the hero of the space. You can also explore darker finishes like gunmetal or copper sinks, or softer tones like brushed nickel if you want something that feels warmer than plain stainless steel.

How to Pick a Sink That Suits Your Cooking Habits

Think about what actually happens at your sink each day. If you’re the kind of cook who uses every pot and pan in the kitchen, a deep single bowl sink gives you the room to soak and scrub without splashing everywhere. If you’re more of a multitasker, a double bowl kitchen sink is a game changer. You can rinse on one side, soak on the other, or keep dirty dishes separate while prepping food.

Households with more than one cook usually prefer a left or right hand bowl configuration, depending on how their bench is set up. And if you just need somewhere to rinse veggies or drain pasta, a small half bowl does the job nicely without taking over your benchtop.

What Are the Best Sink Accessories?

Once you’ve picked the size and finish, add a few extras that make everyday tasks easier. A basket waste kit helps with drainage and keeps things tidy. An inset colander is handy for washing fruit and draining pasta. A dishrack and drainboard tray adds extra workspace when you’re short on bench area. Small details like these can make a big difference to how your sink feels day to day.

This Alma Ellie Dishrack is the solution for when you need to dry dishes straight into the sink bowl.

What About Laundry Sinks – Is There a Standard Laundry Sink Size?

Laundry sinks are a little different. They’re deeper and wider because they have to handle bigger jobs. Most laundry sinks in Australia sit between 510mm and 600mm long, and around 450mm to 500mm wide. Bowl capacities range from 30L up to 70L. If you wash bulky items or bathe pets, go for a deep single bowl. If you’re working with a small laundry, a shallower sink will save space and still get the job done.

How to Choose the Right Laundry Sink Size

Your layout will guide your decision. Got a big benchtop? A built-in sink that lines up with your cabinetry will look sleek and neat. Tight on space? A freestanding tub or wall-mounted sink keeps things simple and leaves more room for storage underneath. Try to keep your sink close to the washer to cut down on spills when transferring clothes.

Installation options are the same as kitchen sinks. You can go for topmount, undermount, or flush mount depending on your benchtop material. If you like that farmhouse look, an apron-front design adds charm while staying practical for everyday use.

The Alma Penny 510x450 single bowl sink would suit most laundry layouts!

Practical Tips for Measuring and Planning Sink Size

Before you buy, check the exact external and internal bowl dimensions. Measure your cabinet width and make sure there’s space for your tapware, basket waste, and any under-sink storage. If you’re replacing an existing model, match the new sink to your current cutout or ask your installer to confirm before checkout.

Buildmat’s sink collection includes compact, standard, and oversized designs to suit any space. Every model is made from quality materials, backed by a warranty, and built to last. Whether you’re upgrading your kitchen or laundry, you’ll find something durable, functional, and made for everyday use.

FAQs

What is the most common kitchen sink size in Australia?

The most common size is around 600mm to 800mm in length, depending on whether it’s a single or double bowl design. Compact kitchens often use 500mm sinks, while large family homes may go up to 900mm.

Are stainless steel sinks better than fireclay?

Both have benefits. Stainless steel sinks are light, durable, and easy to clean, while fireclay offers a premium finish that suits farmhouse-style kitchens. The best choice depends on your design and how much maintenance you want to do.

What size laundry sink should I choose?

If you mainly use it for hand-washing clothes, a 30L or 40L bowl is fine. For bulk washing or pet baths, go for a 70L sink. Always match the sink depth to your countertop height to avoid strain.

Can I replace my topmount sink with an undermount sink?

Yes, but it requires modifying the benchtop. Speak to your builder or fabricator before switching styles, as the existing cutout and countertop material determine compatibility.

Where can I find high quality kitchen sinks in Australia?

Browse Buildmat’s full kitchen sink collection for high quality stainless steel sinks, double bowl kitchen sinks, and matching tapware. All come with warranties and are designed for modern Australian homes.

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