How wide is a 45 inch ultrawide?

The active area of a 45 inch ultrawide is 97.7 cm wide and 45 cm tall — 38.5 in by 17.7 in. With bezels the body is about 98.9 cm wide, which is the figure to measure your space against.

How tall is a 45 inch ultrawide on its stand?

About 59.6 cm from the desk to the top of the panel: 47.6 cm of body on 12 cm of stand. Both are estimates from the size band — check the model’s spec sheet.

Will a 45 inch ultrawide fit a 120 cm × 60 cm desk?

Yes. Standard desk is 120 cm × 60 cm, and a 45 inch ultrawide uses 82 % of its width, leaving 21.1 cm spare.

Dimensions

45 inch ultrawide dimensions

A 45 inch ultrawide measures 97.7 cm × 45 cm of active area — 38.5 in by 17.7 in — and about 98.9 cm wide including its bezels. Below it is drawn to scale on a 140 cm desk, measured against real spaces, and compared with the sizes either side of it.

Try it on your desk

On a 140 cm desk

Exact size

Active area, body size and height on the stand, by aspect ratio
Aspect	Active area	Active area (in)	Body, approx.	Height on its stand
21:9	97.7 cm × 45 cm	38.5 in × 17.7 in	98.9 cm × 47.6 cm	59.6 cm

Active areas are exact for the aspect ratio. Body sizes and stand heights are approximate — check the model’s spec sheet.

This is a curved panel, assumed at 800R. The widths above are the space it occupies: 97.7 cm across, from 105.1 cm of screen measured flat. Its ends stand about 17.1 cm forward of its centre, which is depth your desk has to give it.

Does it fit your desk?

Whether this size fits each standard space, and by how much
Space	Size	Fits?	Detail
Compact desk	100 cm × 50 cm	Fits	99% of the width, 1.1 cm spare
Standard desk	120 cm × 60 cm	Fits	82% of the width, 21.1 cm spare
Large desk	140 cm × 70 cm	Fits	71% of the width, 41.1 cm spare
Deep desk	160 cm × 80 cm	Fits	62% of the width, 61.1 cm spare

How far back to sit

Comfortable viewing distance for a 45 inch monitor, by what it is used for
Used for	Sit	In feet	Field of view
Work / productivity	0.9 m – 1.3 m	3 ft 0 in – 4 ft 2 in	42–56°
Coding	1 m – 1.3 m	3 ft 2 in – 4 ft 2 in	42–54°
Design	0.9 m – 1.2 m	2 ft 11 in – 4 ft 0 in	44–58°
Gaming	0.8 m – 1.1 m	2 ft 7 in – 3 ft 7 in	48–64°
Movies	0.8 m – 1 m	2 ft 6 in – 3 ft 5 in	50–66°
Mixed	0.8 m – 1.2 m	2 ft 9 in – 3 ft 10 in	45–61°

Measured from your eyes to the face of the screen, for a 45 inch 21:9 monitor 97.7 cm wide. A wider target field of view means sitting closer, not further away.

The sizes either side

The sizes either side, and how much bigger or smaller they are
Size	Active width	Width	Screen area
40"	92.3 cm	−5%	−16%

Compared with a 45" 21:9 panel. Area grows roughly as the square of the diagonal, which is why a step up is always a bigger jump than it sounds.

Common questions

How wide is a 45 inch ultrawide?: The active area of a 45 inch ultrawide is 97.7 cm wide and 45 cm tall — 38.5 in by 17.7 in. With bezels the body is about 98.9 cm wide, which is the figure to measure your space against.
How tall is a 45 inch ultrawide on its stand?: About 59.6 cm from the desk to the top of the panel: 47.6 cm of body on 12 cm of stand. Both are estimates from the size band — check the model’s spec sheet.
Will a 45 inch ultrawide fit a 120 cm × 60 cm desk?: Yes. Standard desk is 120 cm × 60 cm, and a 45 inch ultrawide uses 82 % of its width, leaving 21.1 cm spare.