Buying a sofa isn’t just about picking your favourite colour or fabric — it’s about choosing the right size for your space and lifestyle. Whether you’re furnishing a cosy apartment or a spacious living room, the right sofa size can make all the difference in comfort, style, and functionality.
In this guide, we’ll walk you through standard sofa dimensions, types of sofas and their ideal room sizes, and practical tips to help you choose the perfect sofa for your home.
Why Sofa Size Matters
A sofa that’s too large can overwhelm your space, while one that’s too small might not provide enough seating. Sofa dimensions also affect your room layout, traffic flow, and overall aesthetics. Plus, depth, height, and width all contribute to how the sofa feels when you’re actually sitting on it.
Whether you’re binge-watching a show or entertaining friends, you want a sofa that fits your space and your lifestyle.
Key Sofa Dimensions to Know
Here are the main measurements to consider before choosing your sofa:
✅ Overall Width
The total length from arm to arm.
- 1-seater: approx. 90–110 cm
- 2-seater: approx. 140–180 cm
- 3-seater: approx. 180–230 cm
- Sectional/Corner sofas: 250 cm and up
✅ Seat Depth
Deeper seats (60 cm+) are great for lounging; shallower seats (~50 cm) are better for upright sitting.
✅ Seat Height
The typical seat height is around 40–45 cm. Higher seats are easier for older adults to get up from.
✅ Back Height
Higher backs offer more neck and shoulder support, while lower backs create a minimalist look.
Common Sofa Types and Recommended Sizes
🪑 1-Seater Sofa (Armchair)
- Width: 90–110 cm
- Best for: reading corners, bedrooms, or small living areas
🛋️ 2-Seater Sofa
- Width: 140–180 cm
- Best for: small living rooms, couples, or studio apartments
🛋️ 3-Seater Sofa
- Width: 180–230 cm
- Best for: family spaces, larger rooms, or everyday lounging
🛋️ 3+2 Sofa Combination
- 3-seater: 180–230 cm
- 2-seater: 140–180 cm
- Best for: medium to large living rooms, family households
What is it? A 3+2 sofa set includes a separate 3-seater and a 2-seater, offering flexible layout options. Unlike an L-shaped sofa, it can be rearranged to suit different room shapes or conversation areas.
Why choose it?
- Ideal for families needing more seating without committing to a fixed corner
- Allows more freedom when reorganising your space
- Suitable for more traditional or symmetrical room layouts
🛋️ L-Shaped Sofa
- Width: 250–300+ cm
- Best for: open-plan living rooms, lounge lovers, or larger spaces
🛋️ Modular Sofa
- Size: varies depending on the number of modules
- Best for: flexible layouts, renters, or growing families
Sofa Size Buying Tips (Before You Click “Add to Cart”)
📏 Measure your space — twice
Always measure the area where the sofa will go. Leave at least 10–20 cm of clearance around the edges for airflow and movement.
🚪 Check doorways and elevators
Make sure your chosen sofa fits through your front door, staircases, and hallways.
🛋️ Balance your furniture
A giant sofa and a tiny coffee table can throw off your room’s proportions. Match sofa size with other furniture pieces.
👨👩👧👦 Think about your lifestyle
Have pets or kids? Choose durable, easy-clean fabrics and a seat height that works for everyone.
🎨 Don’t forget visual weight
A bulky sofa with thick arms and backs may feel too “heavy” in small spaces. Slim legs and clean lines create a lighter look.
Common Sofa Shopping Mistakes to Avoid
❌ “Bigger is better”
Large sofas aren’t always more comfortable — and they can overcrowd your space.
❌ Assuming L-shaped fits every room
L-shaped sofas can block traffic flow or look awkward in certain layouts. Always sketch out your floor plan first.
❌ Trusting labels blindly
A “3-seater” might only comfortably seat two adults, depending on the design and seat width.
Final Thoughts: Find Your Perfect Fit
Choosing the right sofa is about finding balance — between comfort, size, and style. With the right measurements and a clear idea of how you’ll use the space, you’re well on your way to choosing a sofa that looks great and feels like home.
👉 Explore our sofa collection to find the perfect style and size for your home. Enjoy fast Australia-wide delivery and premium customer support.
