1.5 Bowl Kitchen Sinks: The Flexible Choice for Everyday Kitchens

Choosing the right kitchen sink can make everyday cooking, washing, and food preparation much easier. While single- and double-bowl sinks remain popular, a 1.5 bowl sink offers a useful middle ground between the two. It provides a full-size main bowl along with a smaller secondary bowl, giving you extra space for rinsing, soaking, food preparation, or other kitchen tasks.

A 1.5 bowl sink with drainer can be particularly practical because it combines two different bowl sizes with a dedicated draining area. This configuration can work well in both traditional and modern kitchens, especially when you want more flexibility without installing a large double-bowl sink.

In this guide, we explain what a 1.5 bowl kitchen sink is, its advantages and disadvantages, typical sizes, installation options, materials, costs, and how to decide whether it is the right choice for your kitchen.

What Is a 1.5 Bowl Kitchen Sink?

A 1.5 bowl sink has one large main basin and a smaller secondary bowl. The smaller bowl is usually about half the size of the primary basin, although exact dimensions vary between manufacturers. 

Unlike a traditional double sink, where both bowls are often similar in size, a 1.5-bowl configuration gives you one large uninterrupted washing area and a smaller separate basin for additional tasks.

The smaller bowl can be used for:

● Rinsing vegetables

● Washing cutlery

● Soaking smaller items

● Preparing food

● Draining small amounts of water

● Washing hands

● Separating dirty and clean items

Many models also include an integrated drainer, making them especially useful for traditional kitchen layouts.

How Does a 1.5 Bowl Sink Differ From a Double Bowl Sink?

The main difference is the size of the two basins.

A conventional double-bowl sink typically has two similarly sized bowls, although 60/40 and other configurations are also available. A 1.5 kitchen sink, on the other hand, has one dominant basin and one much smaller bowl.

This gives you some of the flexibility of a double sink without sacrificing as much space in the main basin.

For many homeowners, the 1.5-bowl layout offers a practical compromise.

Pros of a 1.5 Bowl Kitchen Sink

1. Gives You a Large Main Basin

One of the biggest advantages of a 1.5 bowl sink is that the main basin remains large enough for most everyday cookware.

You can wash:

● Pots

● Frying pans

● Plates

● Mixing bowls

● Baking dishes

● Large utensils

At the same time, the smaller bowl provides a separate area for other tasks. This makes the design more flexible than many traditional double-bowl sinks.

2. Provides a Separate Rinsing Area

The smaller bowl can be used for rinsing vegetables, fruit, dishes, or utensils. For example, you could place dirty dishes in the main basin while rinsing produce in the smaller bowl. This separation can make food preparation and cleaning feel more organized.

3. Excellent for Multitasking

A 1.5 kitchen sink allows you to perform different tasks at the same time.

You might use the main bowl for washing dishes while using the smaller bowl to:

● Rinse vegetables

● Hold utensils

● Soak cutlery

● Drain food

● Keep a sponge or cleaning cloth

This is particularly useful in busy kitchens where the sink is frequently used for multiple purposes.

4. Uses Space Efficiently

A 1.5-bowl design can provide two basins without requiring the same amount of space as some larger double-bowl configurations. This can be helpful when you want additional functionality but do not have enough room for a wide sink. 

However, always compare the product’s overall dimensions with your available countertop and cabinet space.

5. Can Include an Integrated Drainer

A 1.5 bowl sink with drainer is a popular configuration because it combines washing, rinsing, and drying areas in one unit.

The drainer can be used for:

● Drying dishes

● Placing wet cookware

● Rinsing vegetables

● Letting utensils drip dry

● Keeping excess water away from the countertop

This can be particularly useful in kitchens where countertop space is limited.

6. Suitable for Different Kitchen Styles

A 1.5 bowl sink is available in a variety of materials and designs.

You can find models suitable for:

● Contemporary kitchens

● Traditional kitchens

● Farmhouse-inspired kitchens

● Minimalist kitchens

● Industrial kitchens

The overall appearance depends on the material, finish, bowl shape, and installation style.

7. More Versatile Than a Traditional Single Bowl

A single bowl offers plenty of space, but it does not provide a separate basin. A 1.5-bowl configuration gives you the best of both concepts to some extent: a large primary basin plus a smaller dedicated area. This can make everyday tasks more convenient without requiring a full-size double sink.

Cons of a 1.5 Bowl Sink

Although the configuration offers flexibility, it is not perfect for every kitchen.

1. The Smaller Bowl Has Limited Capacity

The secondary bowl is much smaller than the main basin. It may be useful for cutlery, vegetables, or small dishes, but it is generally not suitable for large pots or pans. If you regularly need two large washing areas, a conventional double bowl may be more appropriate.

2. Takes More Space Than a Single Bowl

A 1.5-bowl sink is wider than many single-bowl models. If your kitchen has a small countertop or narrow cabinet, check the dimensions carefully. Do not assume that a sink will fit simply because it is advertised as compact.

3. More Areas to Clean

With two bowls and potentially a drainer, there are more surfaces, edges, and corners to clean. The extra cleaning is generally manageable, but homeowners who prefer a very simple sink layout may prefer a single bowl. 

4. The Divider Reduces Some Main-Bowl Flexibility

Although the main bowl is usually large, the smaller bowl and divider occupy some of the sink’s overall width. This means the entire sink surface cannot be used as one uninterrupted basin.

If you regularly wash extremely large baking sheets or oversized cookware, compare the actual bowl dimensions before purchasing.

Common 1.5 Bowl Sink Sizes

There is no universal standard size for a 1.5 bowl sink. Dimensions vary depending on the manufacturer, installation type, material, and whether the model includes a drainer.

Common overall widths may fall around:

● 30 inches

● 32 inches

● 34 inches

● 36 inches

● Larger configurations

The main bowl may be approximately 16 to 20 inches wide, while the smaller bowl may be significantly narrower.

These figures are only general examples. Always use the manufacturer’s exact dimensions when planning an installation.

Important Measurements to Check

Before purchasing a 1.5 bowl kitchen sink, measure:

● Overall sink length

● Overall sink width

● Bowl length

● Bowl width

● Bowl depth

● Countertop cutout

● Cabinet width

● Drain position

● Faucet hole configuration

● Drainer orientation

The sink needs to fit both the countertop and the cabinet underneath.

1.5 Bowl Sink With Drainer: Is It Worth Choosing?

For many households, a 1.5 bowl sink with drainer can be one of the most practical configurations available. 

The two bowls provide separate areas for washing and rinsing, while the drainer provides space for wet dishes and cookware.

The layout can be especially useful if you:

● Wash dishes by hand

● Have limited countertop space

● Frequently prepare fresh produce

● Need a dedicated rinsing area

● Prefer traditional sink layouts

● Want multiple functions from one fixture

However, the drainer does occupy part of the overall sink footprint.

If your priority is maximizing bowl size, you may prefer a 1.5-bowl sink without an integrated drainer or a larger single-bowl model.

Final Verdict: Is a 1.5 Bowl Sink Right for Your Kitchen?

A 1.5 bowl sink is a flexible option for homeowners who want more functionality than a single basin provides without giving up the large main bowl.

Its biggest advantage is versatility. You can wash large cookware in the primary bowl while using the smaller bowl for rinsing, preparation, soaking, or other tasks. Adding a drainer can make the setup even more practical for households that wash dishes by hand.

However, the smaller bowl cannot replace a full-size second basin. If you regularly need two large washing areas, a conventional double bowl may be better.

Before buying, consider your available cabinet and countertop space, main bowl dimensions, secondary bowl size, material, installation style, drain position, and whether you want an integrated drainer.

For many everyday kitchens, the 1.5 kitchen sink offers an excellent balance between space, functionality, and flexibility.

Frequently Asked Questions

Is a 1.5 bowl sink better than a double bowl?

It depends on how you use your kitchen. A 1.5-bowl sink provides more space in the main basin, while a double bowl usually provides two more substantial areas for separate tasks.

What is the standard size of a 1.5 kitchen sink?

There is no single standard size. Many models are available in widths around 30 to 36 inches, but exact dimensions vary by manufacturer and design. Always check the product specifications before installation.

Is a 1.5 bowl sink with drainer practical?

Yes. A 1.5 bowl sink with drainer can provide washing, rinsing, and drying areas in one unit. It can be particularly useful for households that wash dishes by hand.

Can a 1.5 bowl sink fit in a small kitchen?

Some models can work well in smaller kitchens, but the exact dimensions must be checked. Measure the countertop cutout and cabinet space before purchasing.

What can I use the small bowl for?

The small bowl can be used for rinsing vegetables, washing cutlery, soaking small dishes, draining food, or separating clean and dirty items.