November and December are the months for refreshing your living room: the holidays arrive, summer visitors come around, and the desire for a change is strong. But there's one mistake that's repeated with every online purchase: the "stamp" rug, too small, that looks like it's floating in the middle of the room, or the sofa that looked perfect in the photo but is too bulky in real life. Choosing the right size isn't a matter of taste, but rather a matter of a few basic measuring rules. Here are the most useful ones and how to check them before you buy.
The golden rule: the carpet unites, it doesn't float
A rug in the living room helps to "anchor" the seating area: it unites the sofa, armchairs, and coffee table into a single ensemble. If it's too small, each piece of furniture will look isolated and the room will appear smaller.
According to the IKEA Spain guide, The front legs of the sofa should be inside the rug, and ideally the rug should extend about 20 cm beyond each side of the sofa. IKEA UK guide He sums it up in another easy rule: at least one third of the sofa should be on the carpet.
Most common carpet sizes
These are the standard sizes you'll most often see in stores:
- 170×240 cm: Reference measurement for medium-sized living areas, with a 2 or 3-seater sofa.
- 200×300 cm: for larger living rooms or when you want the sofas to fit in too.
- 250×350 cm: the large format for spacious rooms or large sofas.
- Circular with a diameter of 195 cm: an option for corners or to soften a living room with many straight lines.
IKEA Canada publishes a size chart by sofa type It ranges from 133×195 to 250×350 cm, in addition to the circular one with a diameter of 195 cm. It is useful for placing across your sofa with the recommended size.
170x240 or 200x300?
Do the math with your sofa: measure its length and add about 40 cm (20 cm per side). If the result exceeds 240 cm, the 170x240 cm rug will be too small, and you should go for the 200x300 cm one. If the sofa is short and the living room is small, the 170x240 cm rug is usually sufficient.
Sofa with chaise longue or corner
Large sofas change the rules:
- With chaise longue: According to IKEA Spain, the rug should extend 60-70 cm in front of the sofa, so that the chaise lounge does not "cut off" the overall look.
- With corner sofa: The rug should cover the area inside the L-shaped sofa and the coffee table. A circular rug would also work well here.
Modular and curved sofas, which are very trendy, require you to check the measurements of each configuration: if you change the location of modules, the surface area that the carpet must cover also changes.
How to choose the size of a sofa
Before you fall in love with a model, measure:
- The wall or the area where it will go. Leave space on the sides for a side table or a lamp.
- Doors, hallways and elevator. A sofa that doesn't fit through the door is the worst scaling mistake.
- The circulation. Mark the outline of the sofa and coffee table on the floor with painter's tape, and walk around it for a day. If you trip or have to go around it, it's too big.
- The depth. A deep sofa is comfortable, but it takes up valuable floor space in narrow living rooms.
Common scaling errors when buying online
- The stamp carpet: too small, without touching any furniture.
- The sofa that blocks the window or the door.
- The disproportionate coffee table: very small next to a large sofa, or so large that it blocks the way.
- Buy by catalog photo: In a showroom, everything looks smaller than in your home.
- Forget the carpet layer: Layering (a large, plain rug with a smaller one on top) is a trend, but the base must comply with size rules.
From centimeter to image: try before you buy
Measurements in centimeters are abstract. The real question is visual: "Will 200x300 look huge in my living room?" A good method is to combine the measurement checklist with a visual test: photograph your living room and then place the rug and sofa to scale on top of that photo. This way you can see the actual proportions before paying and waiting for delivery.
Read more decorating guides in the DekorAI blog. If you own a carpet or sofa store, get to know Home Try-On? y Request a demo so that your customers can try your products in their own living room.
Frequently Asked Questions
Do the sofa legs go on the carpet?
Yes, at least the front ones. According to IKEA, the front legs of the sofa should be tucked under the rug so that the seating area looks cohesive.
How much should the rug extend over the sofa?
Ideally, about 20 cm on each side. With a sofa with a chaise longue, IKEA recommends that it extends 60-70 cm forward.
What size rug should I get for a 3-seater sofa?
Measure the length of the sofa and add about 40 cm. Depending on the result, 170×240 or 200×300 cm are usually the reference measurements.
Round or rectangular rug with a corner sofa?
Both will work. The important thing is that it covers the inside of the L-shaped sofa and the coffee table; a circular one with a diameter of 195 cm works well in that case.
How much space should be left between the sofa and the coffee table?
It depends on your living room and how you move around. Mark the outline of the furniture on the floor with tape and check that you can walk around and sit comfortably.
How can I visualize a piece of furniture in my home before buying it?
With AI-powered visualization tools like Home Try-On, which display the product to scale over a photo of your own space.
References
- IKEA Spain — What size rug do I need? — https://www.ikea.com/es/es/rooms/living-room/how-to/como-elegir-una-alfombra-para-el-salon-pub75d6ea00/
- IKEA Spain — How to choose a rug for the living room — https://www.ikea.com/es/es/rooms/living-room/how-to/como-elegir-una-alfombra-para-el-salon-pub75d6ea00/
- IKEA UK — Choosing the right size rug for your space — https://www.ikea.com/gb/en/rooms/living-room/how-to/choosing-the-right-size-rug-for-your-space-pub4eafcf30/
- IKEA Canada — How to choose the right rug size — https://www.ikea.com/ca/en/product-guides/how-to-choose-the-right-rug-size-pub2e7f9fb0/
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