Sofa Dimensions (Size Guide) - Designing Idea (2023)

Here we share our sofa dimensions size guide to help you select the right one for your interior design.
Sofa Dimensions (Size Guide) - Designing Idea (1)Your sofa is an investment – spend wisely. Deciding on which sofa to go for in a room is a big deal. Sofas don’t come in cheap, so it’s important you invest wisely. It’s so easy to be distracted by the pretty patterns, and stunning fabrics – but there’s much more to consider when purchasing such an important item for your home.

Table of Contents

Standard Sofa Dimensions

Did you know there are standard sofa dimensions? It might sound surprising, but it’s true. Of course there may be slight variations across different types of furniture, but generally speaking most of the sofas available to buy have the same approximate measurements.

Once you know what these are, you can create a rough plan of your space, based on these dimensions. Because we’re kind, we’ve researched them for you.

The standard sofa dimensions range from 72″ to 96″ in length, 33″ tall and 32″ to 40″ inches in depth.

Sectional Sofa Dimensions

The sectional sofa… Naturally, there are many different common styles of sectional sofas. The most common kinds are:

(Video) Sofas for Small Spaces: Sofa Shopping Guide! | Interior Design Tips

Sofa Dimensions (Size Guide) - Designing Idea (2)– Where the left and right sections of the sofa are of equal lengths. For example, if you’re looking at a typical 5 seat sectional with equal sides, this will usually measure in at 95 x 95 inches or 98 x 98 inches. Depths from the back of the sofa to the front are usually between 36 to 40 inches.

– Three seater sectional sofas measure in at lengths of 78 to 88 inches. Depths from the back of the sofa to the front are usually between 37 to 40 inches.

3 Seater Sofa Dimensions

Sofa Dimensions (Size Guide) - Designing Idea (3)The three-seater…The three seater sofa typically measures in at 90 to 96 inches wide. Depths from the back of the sofa to the front are usually between 31 to 39 inches.

Loveseat Dimensions

The Loveseat… You’re looking at measurements ranging from 48-72 inches wide and 36 inches deep.

Sleeper Sofa Dimensions

If you’ve run out of beds, and your friends are egging to stay over, having a sleeper sofa is the perfect practical solution. Not only will you experience its space saving benefits, but its dual function makes it incredibly useful as somewhere to lounge too!

Full Size Sleeper Sofa Dimensions

Sofa Dimensions (Size Guide) - Designing Idea (4)Made in custom sizes, if you’re after a full sized sleeper sofa, you’re looking at measurements of 67″ to 83″ with a mattress width of 52″ to 55″ and about 90″ when fully opened up.

Queen Sleeper Sofa Dimensions

If you’re thinking bigger is better, then the next size up – the Queen, is available ranging from 75″ to 96″ inches with a mattress width of 58″ to 62″.

King Sleeper Sofa Dimensions

For a king sleeper sofa you’ll find the dimensions ranging from 84″ to 92″ with a mattress width of 74″ to 76″.

(Video) DREAM SPACE SERIES: Measuring Your Space for the Right Furniture | Julie Khuu

Coffee Table Dimensions

Always handy to note is the size of an average coffee table which can sit perfectly next to the sofa, or in front of it. The standard measurement of your average coffee table is 48 inches long by 30 inches wide. Now, time to get the kettle on!

How To Choose The Right Size Sofa For A Room

Before you begin to choose a sofa, think about scale… It may seem self-explanatory, but if your living space is small, having a huge sofa will dominate the space and make it feel overbearing.

Likewise, if you have a larger living space, a small sofa will look disproportionate to the rest of the room. It’s also worth considering the ceiling height here too.

If the ceiling is high, you’ll want to find a long, wide and low backed sofa to add visual interest to the space. If your room has a low ceiling, the opposite will apply.

Why not test out your 2D drawing skills, and draw the room out to scale? Include the rest of your furniture in your sketch to help you visualize how the room can be configured.

Remember to leave space to move around in the room, so factor this into your drawing to ensure you get an accurate representation of the area you’re working with. There are even interior design programs that can help you visualize your space with the exact measurements of your room.

Then, the shape and character of your room…

You might not think it, but the shape of your space makes a huge impact on how big or small your sofa should be, and ultimately how well it fits in situation.

(Video) 4 Furniture Ideas to Maximize Your Living Room Layout | Julie Khuu

You might live in an older property with stunning period features which deserve attention in their own right. The size you pick may be just as important as the sofa colors, especially if you’re working with a smaller floor plan.

Your sofa size should mold to the existing features and character of your room. That way it won’t look out of proportion with the rest of the space, and will actually help to enhance what’s already there. Sofa Dimensions (Size Guide) - Designing Idea (5)

Have you thought about traffic flow?

And no, we don’t mean outside. You’ll need to consider how you, and others can freely move around the space. Your sofa shouldn’t be so large that it obstruct doorways, or segments the space to inhibit movement. The last thing you want in your living space is to feel restricted, and confined by your furniture.

Then, ask yourself ‘What do I want from my sofa?’

The answer is obvious – a space to relax of course! However, there are different ways to relax, and it depends entirely on you, your home and personal requirements.

Is your sofa meant to be a place where the whole family can congregate closely together? If so, a large sectional sofa might be ideal. Maybe you’re after a serene space where you can fully stretch out in front of the TV? Consider a long sofa with extra support.

Or, you’re simply after an elegant place where you can put your feet up and take a nap –how about a smaller chaise lounge?

(Video) INTERIOR DESIGN | No-Fail Furniture Placement Tips For the Best Layout

Defining what it is that you require from your sofa makes all the difference in how you go about finding the perfect solution for your space.

Measure up

As you bring together your considerations to the scale and shape of your room, the movement of traffic through it, and your personal sofa requirements, it’s time to measure up.

You may have a sofa style in mind, or perhaps have even set your eye on a sofa that’s for sale! Measure up the area where your sofa is likely to go and put down some masking tape to get a sense of the width.

You could even draw out the size of your sofa onto plain paper, and cut this out, so you have a realistic idea of size. Then, walk around the imaginary sofa to check how much space you have for walkways, coffee tables etc. Read more about how to measure a sofa here.

Measuring up your room will help you to realistically consider the size, and (perhaps re-evaluate the) style of sofa you should be looking at, which will then help fine tune your options when it comes to your sofa search.

For more ideas check out our gallery of types of sofa fabrics here.


What are ideal sofa measurements? ›

A standard size sofa, or three-seater sofas, is about 90 inches wide in the seating area, 38 inches deep, and 34 inches high. However, this can vary from brand to brand. In this guide, we'll help you find the perfect new sofa for your living room.

What is the 2 3 rule sofa? ›

The golden ratio rule essentially says that your living room furniture arrangement should follow a 2:3 ratio. This means that between your couches, chairs, area rugs, and coffee tables, proportions should generally be a two-thirds proportion.

How do you write dimensions of a sofa? ›

The first number is the width (W), the second number is the depth (D), and the third number is the height (H). Another way to write the same measurements would be: 30″W x 16″D x 36″H.

What is the ideal sofa size for living room? ›

The sofa should be about two thirds the size of the entire room. If you decide to add in a coffee table too, that should then be two thirds the size of the sofa (if no chaise) or one third to half the size of the sofa if it has a chaise.

Will a 40 inch wide sofa fit through a 36 inch door? ›

Yes, the diagonal distance between a lower and upper corner of a door frame is greater than 54 inches, so another wider material could fit in the defined space, but not sheetrock, you are limited by the size of the product and not the opening size.

Can couch be too big for space? ›

'When a couch dominates a space and leaves no room for pieces like a coffee table, side tables or accent chair, it is likely too big. Small spaces can still live like bigger spaces when furniture selections are scaled appropriately.

What is the most comfortable seat depth for a sofa? ›

The exact number will vary depending on your height, but 20 to 22 inches tends to be a good range for most people (think a height range of 5' 4” to 5' 10”) to sit up comfortably. The tallest people — think 6 feet or taller — many need a depth of 23-24 inches.

How many cushions look good on a sofa? ›

Too many cushions and your living room could look cluttered, and they may even make the sofa less comfy. As a general rule, we reckon a two- or three-seater sofa needs a maximum of three cushions. If your sofa's larger then you can get away with more. Think six or more on a large corner sofa.

How do I know if a sofa will fit in my room? ›

Compare the width of your doorframe with the height of your sofa allowing some wiggle room either side. This will determine if we can take the sofa through on its side. If the door width is greater than the height of your sofa, then it will fit through.

Is a 72 inch sofa big? ›

In general, the width of a small sofa (A) is 72 inches or less, the width of a standard sofa (B) is 84-88 inches and the width of a grand sofa (C) is 96 inches or more.

What is the most common size sofa? ›

While the general range for sofas is between 72 and 96 inches, the average length is roughly 84 inches long. Sleek, armless sofas may be on the lower end of the scale, while traditional couches with thick rolled arms are likely to be on the higher side. Meanwhile, loveseats are typically between 48 and 72 inches long.

How much room should I have on each side of my couch? ›

Your sofa should not occupy the entire length of a wall and there should be at least 18 inches of space on either side of the sofa, a good rule to use when figuring out if a sofa or sectional couch will suit your space.

What is the standard size of a 2 seater sofa? ›

Standard sofa sizes for a two seater couch are usually 63 inches in width, 38 inches in depth and 34 inches in height. The dimensions of a loveseat are typically a few inches shorter in width, measuring around 58 inches.


1. BEST SECTIONALS for Your Living Room - What to Look for, Where to Buy! | Julie Khuu
(Julie Khuu)
2. ✅ TOP 16 SMALL LIVING ROOM Interior Design Ideas and Home Decor
3. 10 Sectional Sofa ideas and Layouts
4. AWKWARD SPACE SOLUTIONS - Open Concept Layouts | Julie Khuu
(Julie Khuu)
(Kristen McGowan)
6. How to Choose a Sofa
(Nick Lewis)
Top Articles
Latest Posts
Article information

Author: Mrs. Angelic Larkin

Last Updated: 03/28/2023

Views: 5719

Rating: 4.7 / 5 (47 voted)

Reviews: 86% of readers found this page helpful

Author information

Name: Mrs. Angelic Larkin

Birthday: 1992-06-28

Address: Apt. 413 8275 Mueller Overpass, South Magnolia, IA 99527-6023

Phone: +6824704719725

Job: District Real-Estate Facilitator

Hobby: Letterboxing, Vacation, Poi, Homebrewing, Mountain biking, Slacklining, Cabaret

Introduction: My name is Mrs. Angelic Larkin, I am a cute, charming, funny, determined, inexpensive, joyous, cheerful person who loves writing and wants to share my knowledge and understanding with you.