Guides & tips

Poster sizes: how to choose the right size for your wall

The right size is what makes a print look like it belongs. Too small and it gets lost on the wall, too big and it takes over the room. This guide goes through every size we make, from A4 to 100x140 XL, with simple rules for the sofa, the bed and the gallery wall – and how frames and mat boards fit in.

A large XL poster above a stack of books and a small side table

A small framed botanical print on a light wall above a round table

In short

10sizes, from A4 to 100x140 XL – six rectangular and four square
50x70our most popular size, at home above a sofa, bed or table
66–75%of the furniture's width is the sweet spot for the art
5–8 cmbetween the frames when you hang a group

All our sizes at a glance

Six rectangular sizes from 21x30 to 100x140 cm and four square from 40x40 to 100x100 cm, shown here to scale so you can see how big the step is from one size to the next. Click a size to see every poster in it.

Rectangular sizes on the left, square on the right, all drawn to the same scale.

Start with the furniture, not the wall

Most walls have something in front of them – a sofa, a bed, a sideboard – and that is what the art relates to. A simple rule: let the art, or the group of art, cover about two-thirds to three-quarters of the width of the furniture below.

Measure the furniture, multiply by 0.66 and 0.75, and you have the width to aim for. Then choose one large print or a group that adds up to that width, with 5–8 cm between the frames.

Furniture	Width	Aim for	Our suggestion
Nightstand	50 cm	25–38 cm	One 21x30 or 30x40
Sideboard or dresser	100 cm	65–75 cm	One 70x100, or two 30x40 side by side
Desk	120 cm	80–90 cm	Two 40x50 side by side
Single bed	90 cm	60–68 cm	Two 30x40, or one 50x70 for a calmer look
Double bed	140–180 cm	95–135 cm	One 100x100, or two 50x70
Small sofa	160–180 cm	105–135 cm	Two 50x70, or three 40x50
Large sofa	200–240 cm	135–180 cm	Two 70x100, or one 100x140 as a statement

The widths are for the posters themselves – the frames add a little. A single XL print can be narrower than the rule and still hold the wall, because the size does the work. Our guide to hanging wall art covers the height and spacing.

Size calculator

What size fits your wall?

Choose the furniture, enter its width and see what fits – with the size, the gap and the height to hang it.

StatementSubtleA pairSquarePicture ledge

100x140 cm · landscape

140 cmwide in total
20 cmabove the sofa
155 cmfloor to centre

One large print that sets the tone – the wall does the talking. Covers about 70% of the sofa’s width.

Shop 100x140 posters Five gallery wall layouts →

Based on our hanging guide: 20–25 cm above the furniture, 6 cm between frames and the top edge no higher than 210 cm. Standard furniture heights and a 240 cm ceiling.

A large abstract print hanging alone above a low velvet sofa

A landscape-format floral print centred above a double bed

A large dark abstract print above a rattan sideboard

What each size is for

Where each size works best, from the desk to the big wall above the sofa. Click a size to see every poster in it.

A421x30 cmDesks, shelves and the building block of a gallery wall.Shop 21x30 posters →

Easy to combine30x40 cmAbove a nightstand or desk, and the easiest size to combine.Shop 30x40 posters →

40x50 cmThe mid-size that fills a wall without taking over.Shop 40x50 posters →

70x100 cmOne print, one wall – big enough to define the room.Shop 70x100 posters →

XL100x140 cmOur largest, for a wide wall or a high ceiling.Shop 100x140 posters →

Square sizes40x40 and 50x50 suit shelves, nightstands and narrow walls, or break up a row of rectangular prints. 70x70 and 100x100 work alone as a calm focal point.40x40 50x50 70x70 100x100

A small framed poster above a desk with a table lamp

A mid-size framed print above a curved sofa next to a green side table

The Great Wave with a wide white mat board in a square black frame

One large print or several small?

A single large print gives the room a calm, clear focal point. A group adds rhythm and lets you mix motifs, colours and sizes. Whichever you choose, treat a group as one large piece: measure the whole group against the furniture, not each frame on its own.

Sizes that work together

Proportions matter more than you might think. 21x30, 50x70 and 70x100 have almost the same proportions, about 1:1.4, so they line up neatly in a grid. 30x40 and 40x50 are a little squarer, which suits a looser, salon-style mix. Four combinations that work, drawn to scale above the furniture they suit:

The classic centrepiece

One 50x70 in the middle with two 30x40 and two 21x30 around it. About 120 cm wide – right for a 160–180 cm sofa.

The tidy grid

Four 30x40 in two even rows, about 65 cm wide, above a 90–100 cm sideboard or desk. Six 21x30 work the same way.

The pair

Two 70x100 side by side, about 145 cm wide – made for a 200–220 cm sofa or a wide bed.

The relaxed mix

One 40x50, one 30x40 and one 40x40 square in a loose row, about 120 cm wide, above a 160–180 cm sideboard.

Start with the largest print, hang it at eye level and build outwards from there, keeping the same 5–8 cm between all the frames. Or start from one of our ready-made gallery walls, with every print, frame and size already chosen.

A gallery wall of six framed prints in warm neutral tones above a cream sofa with a mushroom floor lamp

A seven-print gallery wall in mixed sizes above a wooden bench in a light living room

Portrait, landscape or square?

Portrait formats lift the eye and make a ceiling feel higher, which is why they suit low furniture and narrow walls. Landscape motifs follow the length of a sofa, bed or dining table. Squares feel calm and balanced, and they are the easiest way to break up a row of portrait prints.

Frames and mat boards

Our frames are made to fit our posters exactly: a 50x70 poster fits a 50x70 frame. Choose "Add frame" on the poster's product page and you get both in the same order. A mat board is the same size as the frame, and the poster inside it is one size smaller:

Frame and mat board	Poster
30x40	21x30
40x50	30x40
50x70	40x50 or 30x40
70x100	50x70
50x50	40x40
70x70	50x50

Mat boards aren't available for 100x100 and 100x140. Our XL frames in those sizes are sold together with the poster – we mount it and deliver it ready to hang. Read more in our guide to mat boards.

Corners of picture frames in black, oak, dark oak and white stacked on each other

A framed print with a blue mat board in a black frame above a round table

Test before you buy

Cut out paper in the sizes you're considering, or mark them on the wall with painter's tape, and look at them from where you usually sit or stand. It takes five minutes and saves you from guessing. If you're torn between two sizes, go for the larger one – art is far more often too small than too big.

What are the standard poster sizes?

Our rectangular sizes are 21x30, 30x40, 40x50, 50x70, 70x100 and 100x140 cm, and our square sizes are 40x40, 50x50, 70x70 and 100x100 cm.

Is 21x30 the same as A4?

Almost. A4 measures 21 x 29.7 cm, and an A4 print fits a 21x30 cm frame. Our 21x30 posters and frames are the A4 format.

Which size is the most popular?

50x70 cm is our most popular size, and 30x40 cm is another favourite. Both work almost anywhere, on their own or in a gallery wall.

What size poster should I hang above a 200 cm sofa?

Aim for art that is about 135–150 cm wide in total: two 70x100 side by side, or a gallery wall of the same width. If you want a single print, 100x140 XL makes the biggest impact.

Do your frames fit your posters?

Yes. Our frames are made to fit our posters exactly – a 50x70 cm poster fits a 50x70 cm frame. With a mat board, the poster is one size smaller than the frame.

Is the poster delivered framed?

The poster is delivered without a frame, unless you choose "Add frame" on the product page. Then you get the poster and the frame in the same order. XL frames in 100x140 and 100x100 are mounted by us and delivered ready to hang.

Shop by size

Posters21x30 30x40 40x50 50x70 70x100 100x140 40x40 50x50 70x70 100x100

Frames21x30 30x40 40x50 50x50 50x70 70x70 70x100 100x100 100x140

Bestsellers in every size