34 Inch Ultrawide Monitor Dimensions
A 34 inch ultrawide monitor has a screen 31.4 in79.7 cm wide and 13.1 in33.3 cm tall (79.7 cm31.4 in x 33.3 cm13.1 in). The 34 inches is measured diagonally across the glass, corner to corner. The ultrawide monitor itself is always a little bigger than these numbers.
Below you can see it to scale and check it against your desk. You will also find the resolution and scaling that suit this size.
- Width
- 31.4 in 79.7 cm
- Height
- 13.1 in 33.3 cm
- Diagonal
- 34 in 86.4 cm
- Aspect ratio
- 21:9
How big is a 34 inch ultrawide monitor?
Here it is drawn to scale against the largest size in our chart, the 49 inch. The screen covers 412 sq in2,656 sq cm, 6% less than a 32 inch monitor.
- Diagonal
- 34 in (86.4 cm)
- Width
- 31.4 in79.7 cm · 79.7 cm31.4 in
- Height
- 13.1 in33.3 cm · 33.3 cm13.1 in
- Screen area
- 412 sq in2,656 sq cm
- Aspect ratio
- 21:9
- Perimeter
- 89.0 in226.0 cm
- Pixel density at 2560 × 1080
- 82 PPI
- Pixel density at 3440 × 1440
- 110 PPI
- Pixel density at 5120 × 2160
- 163 PPI
How big is a 34 inch ultrawide monitor with the stand?
Stands add height and depth, and frame widths vary. Here are the real measurements of popular 34 inch monitors from their makers' spec sheets.
Each model name links to its maker's spec sheet. Prices open on Amazon (affiliate links).
What did the real models show?
The table lists three 34 inch ultrawide monitors, all from Dell. Their bodies are 31.8 in80.7 cm to 32.0 in81.3 cm wide, or 0.4 in1.1 cm to 0.6 in1.6 cm more than the screen itself. With under 1 in (2.5 cm) between them, the frame rarely decides whether one of these fits.
Without its stand, the Dell U3425WE is the thinnest at 4.1 in10.4 cm deep. At the other end, the Dell SE3426DW is 4.8 in12.1 cm deep.
Weights run from 14.13 lb6.4 kg for the Dell SE3426DW to 17.15 lb7.8 kg for the Dell U3425WE. A monitor arm rated for 18 lb8.2 kg or more covers the weight of every model here.
With their stands, the makers list heights of 15.5 in39.3 cm to 18.0 in45.6 cm, so measure under any shelf. On their stands, they take 8.6 in21.9 cm to 9.5 in24.1 cm of desk depth.
All three share one VESA pattern, 100 x 100 mm, so one arm pattern covers them all.
Will a 34 inch ultrawide monitor fit on your desk?
Enter the space on your desk, under any shelf or cabinet. We check it against the screen, and the table above shows what each stand adds.
How much desk do two or three need?
Two 34 inch screens side by side need at least 62.7 in159.3 cm (159.3 cm62.7 in) of desk width for the screens alone. Three need 94.1 in239.0 cm (239.0 cm94.1 in). Add the frame widths from the table above.
How far should you sit from a 34 inch ultrawide monitor?
Desk screens are usually viewed from 20 to 30 in (50 to 75 cm). The table shows how much of your view a 34 inch screen fills at each distance. It feels very wide at every distance in the table, from 18 to 32 in46 to 81 cm, so expect to turn your head.
Which resolution suits a 34 inch ultrawide monitor?
Higher resolution looks sharper but makes text smaller, so you need display scaling. At 34 inches, 2560 × 1080 gives 82 PPI and 5120 × 2160 gives 163 PPI. The table shows the Windows scaling each needs.
At this size, 2560 × 1080 looks soft, 3440 × 1440 looks clear and 5120 × 2160 looks very sharp. 2560 × 1080 works at 100% scaling, while 3440 × 1440 needs 125% and 5120 × 2160 needs 175%.
Sit farther away than the last column and you will not see single pixels. See every resolution in the chart.
How does a 34 inch ultrawide monitor compare with other sizes?
The next size up, the 38 inch ultrawide monitor, has 25% more screen area. The next size down, the 32 inch monitor, has 6% more screen area. Area grows with the square of the diagonal, so a few inches feel bigger than they sound.
That makes the size up a clear step, and the size down a small step.
Shop 34 inch monitors and desk gear
Affiliate linksMore questions about 34 inch monitors
What are the dimensions of a 34 inch monitor in cm?
The screen is 79.7 x 33.3 cm, with a diagonal of 86.4 cm.
Is a 34 inch monitor too big for a desk?
At 24 in away it fills 66 degrees of your view. Above about 40 degrees, you may need to move your head to see the edges.
Is a 34 inch monitor 34 inches wide?
No. 34 inches is the diagonal, and the screen is 31.4 in wide.
What resolution is best for a 34 inch monitor?
3440 × 1440 gives 110 PPI at this size, which suits 125% Windows scaling. Higher resolutions look sharper but need more scaling, so text stays readable.
How much does a 34 inch monitor weigh?
The models above weigh 14.13 lb (6.4 kg) to 17.15 lb (7.8 kg) without the stand. The lightest is the Dell SE3426DW, and the heaviest is the Dell U3425WE.
Which of these 34 inch monitors is the thinnest?
The Dell U3425WE is the thinnest in the table, at 4.1 in (10.4 cm) deep without the stand. On an arm, that is close to all the depth it takes, while a stand needs more desk.
How we measure
Screen width = diagonal x a / sqrt(a^2 + b^2) and height = diagonal x b / sqrt(a^2 + b^2) for an a:b screen. Viewing angle = 2 x arctan(half the screen width / distance). Pixel visibility uses 1 arcminute, the limit of 20/20 vision.
Model sizes come from each maker's published spec sheet, linked in the table. Last checked 2026-10-09.