Standard Kitchen Sink Plug Size in Australia: A Comprehensive Guide
When it comes to renovating or upgrading your kitchen, one detail that's often overlooked is the size of your sink plug. However, choosing the right size is crucial for ensuring your sink functions efficiently and safely. This guide will help you understand the standard kitchen sink plug sizes in Australia and provide tips on selecting the perfect fit for your sink.
Understanding Australian Sink Plug Sizes
In Australia, kitchen sink plugs typically come in two standard sizes: 35mm and 40mm. These sizes refer to the diameter of the plug's body, not the hole it covers. The size you need depends on the diameter of the sink's waste outlet.
35mm Sink Plugs
The 35mm sink plug is the most common size in Australian kitchens. It's suitable for standard single-bowl sinks and many double-bowl sinks. If your sink's waste outlet is 35mm in diameter, this is the size you'll need.

40mm Sink Plugs
The 40mm sink plug is less common but still widely available. It's typically used in larger sinks, such as those with a double-bowl design or commercial-grade sinks. If your sink's waste outlet is 40mm in diameter, you'll need a 40mm plug.
Measuring Your Sink's Waste Outlet
Before purchasing a new sink plug, it's essential to measure the diameter of your sink's waste outlet. Here's how:
- Locate the waste outlet at the bottom of your sink.
- Use a ruler or measuring tape to measure the diameter (width) of the outlet.
- If your outlet is oval-shaped, measure the width at its widest point.
Once you have the measurement, you can choose the appropriate-sized sink plug.

Types of Sink Plugs
In addition to size, sink plugs also come in various types. The most common are:
- Pop-up Plugs: These are operated by a lever or handle on the sink's countertop. They're convenient and easy to use but can be more expensive than other types.
- Lever Handle Plugs: Similar to pop-up plugs, these have a lever handle but are typically less expensive. They're easy to use and can be a good budget-friendly option.
- Push-on Plugs: These are simple and affordable, with a plug that's pushed into the outlet to create a seal. They're not as convenient as other types, as they require reaching into the sink to operate.
Choosing the Right Sink Plug Material
The material of your sink plug can affect its durability and appearance. Common materials include:
- Plastic: Affordable and lightweight, plastic plugs are a good budget-friendly option. However, they may not be as durable as other materials.
- Stainless Steel: Stainless steel plugs are durable, resistant to corrosion, and easy to clean. They're a good choice for modern kitchens and can complement stainless steel sinks.
- Brass: Brass plugs are durable, resistant to corrosion, and have a classic, timeless appearance. They can be a good choice for traditional or vintage-style kitchens.
Installing Your New Sink Plug
Installing a new sink plug is a straightforward DIY task. Here's a brief overview of the process:
- Turn off the water supply to your sink and disconnect the old plug.
- Clean the waste outlet to ensure a good seal with the new plug.
- Insert the new plug into the waste outlet, ensuring it's the correct way around.
- Secure the plug in place using the provided hardware.
- Reconnect the water supply and test the plug to ensure it's working correctly.
Conclusion
Choosing the right-sized sink plug for your Australian kitchen is crucial for ensuring your sink functions efficiently and safely. By understanding the standard sizes, measuring your sink's waste outlet, and selecting the appropriate type and material, you can find the perfect sink plug for your needs. With this guide, you're well-equipped to make an informed decision and upgrade your kitchen with confidence.