Sofa Sizing Guide for Your Space

Choosing the right sofa for your living space involves more than just picking a style and colour that suits your taste. The size of your sofa is crucial for both the functionality and aesthetics of your room. Whether you're furnishing a cosy studio apartment or a spacious family room, understanding sofa size recommendations and how they relate to your living room size can make all the difference. This guide will help you navigate the world of armchair dimensions and sofa sizes to find the perfect fit for your space.

Understanding Sofa Dimensions

Before diving into the specifics, let's break down the standard dimensions you need to consider when selecting a sofa.

Overall Length

The length of a sofa is the most significant measurement and is typically the first dimension listed. It's measured from one arm to the other and determines how much space the sofa will occupy in your room.


Depth is the distance from the front edge of the seat to the back cushion. A deeper sofa allows for more lounging space, while a shallower one offers a more upright seating position, which might be better suited for formal areas.


Sofa height is measured from the floor to the highest point of the sofa, usually the backrest. Keep in mind that higher backs offer more support and can make a statement in your room, while lower backs can create a sleek, modern look.

Arm Width

The width of the sofa arms can affect both the overall dimensions and seating capacity of the sofa. Slimmer arms give more seating room, whereas wider arms may be more comfortable to lean against but take up more space.

Sofa Size Recommendations by Room Size

When selecting a sofa, you need to consider the size of your living room. Here are some recommendations based on different room sizes.

Small Spaces

For smaller spaces, such as apartments or studios, consider a loveseat or a two-seater sofa. These typically range from 50 to 70 inches in length and are ideal for tight spaces without overwhelming the room.

Medium-Sized Rooms

In medium-sized living rooms, you have more flexibility. Sofas that are between 72 and 84 inches in length work well. You could also explore sectional sofas that can offer a versatile seating arrangement while maximising your space.

Large Rooms

Large living rooms can accommodate larger sofas, often over 90 inches in length. Consider a sectional with a chaise for added comfort, or create a conversation area with multiple sofas or a combination of sofas and armchairs.

Balancing Sofa Size with Other Furniture

When integrating a sofa into your living space, it's essential to balance its size with the other furniture in the room.

Coffee Tables

The ideal distance between the edge of your sofa and your coffee table is about 18 inches. This allows enough legroom while still keeping the table within easy reach.

Side Tables and Lamps

Side tables should be roughly the same height as the sofa arms, with lamps tall enough to cast light over the shoulder of a seated person for reading.

TV and Entertainment Units

The sofa should be positioned at a comfortable viewing distance from the TV. A good rule of thumb is that the distance should be about 1.5 times the diagonal size of your TV screen.


Ensure there's enough space around the sofa for a comfortable walkway. Aim for at least 30 to 36 inches of clearance around the main seating area to avoid a cramped feeling.

Tips for Measuring Your Space

Before heading out to shop for your new sofa, measure your space carefully. Here’s how to do it right:

Room Layout

Sketch a floor plan of your room, noting the placement of doors, windows, and other furniture. This will help you visualise where the sofa will go and how it will interact with the rest of your space.

Use Tape

Mark out the dimensions of potential sofas on the floor with painter's tape. This gives you a physical representation of how much space the sofa will occupy.

Doorways and Stairs

Don't forget to measure doorways, staircases, and elevators to ensure the sofa can be delivered to your space without issues.

Sofa Styles and Their Dimensions

Different sofa styles will have varying dimensions and might suit different room sizes and layouts.


A classic Chesterfield sofa usually has a deep seat and rolled arms. They can range from 72 to 96 inches in length and offer a regal, timeless look.

Mid-Century Modern

Mid-century modern sofas often feature clean lines and a lower profile. They typically measure between 70 and 85 inches in length, making them a good fit for contemporary spaces.


Sectionals come in various sizes, from compact two-pieces to sprawling five-piece setups. They offer flexibility but require careful measurement to ensure a good fit in your room.

Selecting the Right Sofa for Your Lifestyle

Beyond dimensions, consider your lifestyle when choosing a sofa. If you entertain often, a larger sofa with stain-resistant fabric might be your best bet. For those who enjoy lounging, a sofa with a deeper seat or a reclining feature might be ideal.


Sizing up the right sofa for your space is a balance of aesthetics, comfort, and practicality. With the right measurements and a clear understanding of your living room size, you can select a sofa that not only fits your space but also enhances it. Remember to account for the dimensions of other furniture pieces and leave enough room for movement. With these tips, you're now well-equipped to find the perfect sofa for your home.