What is Sink Radius? Selecting the Right One

What is Sink Radius? Selecting the Right One
3 minute read

For contractors, fabricators, and others who frequently deal with kitchen sinks, radius is a common term. For others, radius, in the context of a sink, is likely a complete mystery. If you’re reading this, then your probably in the latter group and find yourself scratching your head as to what radius means and why it matters.

The Basics

Radius refers to the angle of the corners in a sink; this small distinction can completely alter the look, style, and functionality of a sink. You are likely used to the radius of standard sinks, the everyday, typical sink you have seen thousands of times. Of course, you’ve also never referred to those corners as being a radius of 80 or 85 because manufacturers don’t advertise the radius of a standard sink. 

To accurately measure the radius of a sink's corner, a clear and precise method can be followed. Initially, identify the points where the curvature of the sink begins at each corner. Utilize a practical approach by aligning two straight edges, such as pieces of paper or rulers, with the sides of the sink that converge at the corner. Extend these straight edges until they intersect, forming a 90-degree angle, which creates an imaginary right angle at the corner of the sink.

The next step is to measure the distance from the point where the curve starts (on the actual edge of the sink) to this intersection point. This length is the radius of the sink’s corner, representing the radius of the circular arc that forms the corner's curve. Typically, this dimension is expressed in millimeters.

It’s common for the radius to be consistent across all corners of the sink, but variations can occur, especially in custom designs or unique sink shapes. Therefore, it's advisable to check each corner.

In summary, a sink’s radius represents the angle of all the corners.

The Range of Radius

Now that you know what radius means, what varieties of radius exist, and how can you transform your kitchen by selecting the right radius? We already learned that standard sinks share a common radius, and between various brands, you’ll likely not see a noticeable difference. Standard sinks are perfect for complimenting a kitchen with a more subdued and traditional theme. If you’re looking to alter the look of your kitchen using a rustic or modern theme, it is critical to understand the radius options that exist beyond standard sinks.

Starting from Zero

Are you looking to transform your kitchen from average to extraordinary or capture the feel of a professional kitchen? Start from zero by looking at sinks with a zero radius. Every corner in a zero radius kitchen sink measures 90 degrees, creating sleek and dramatic lines. In combination with a modern or industrial faucet design, you’ll create an environment perfect for a home chef.


If you intend to make the jump from a standard to zero radius sink, you should know that additional upkeep will be required. With 90-degree corners, you will need to invest some extra time making sure to remove any residue or debris that will collect in the corners. In some cases zero radius sinks feature straight sides and a flatter basin. This can cause water to pool on the bottom, and you may need to wipe the surface down to avoid water spots. 


The Tight Radius

Perhaps the thought of spending additional time cleaning your kitchen sink isn’t your ideal way to spend your free time, but you want your kitchen to make a statement. You can capture that professional look and save yourself time by selecting a kitchen sink with tight radius corners. This radius offers a departure from the traditional standard sink, yet the corners are slightly rounded, reducing the time spent keeping your sink clean.


Standard Radius

Standard radius sinks are the least complicated of any of the radius we will cover today. For most of our readers, the standard radius is synonymous with every kitchen sink they have used or own. Gradual sloping corners that direct water to the drain is the hallmark of standard sinks. If you’re opting for the classic and traditional look, you’re in luck, the majority of sinks will complement your design perfectly.


Shop Today

Now that you understand the term radius and how you can use it to enhance your kitchen design, start shopping for your perfect kitchen stainless steel sink today.

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