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What scaling should I use with a 34-inch 1440p ultrawide monitor?

TechCompare recommends 125% scaling (134.43% exact).

TechCompare recommends 125% for a 34-inch (86.4 cm) 3440 × 1440 ultrawide monitor. The exact target is about 134.43%, so 125% is the closest common setting. Its pixel density is close to a 27-inch 1440p monitor despite the much larger diagonal. The extra diagonal includes more horizontal screen area, which is why diagonal size alone isn't enough to choose a scaling percentage.

By TechCompare · Updated

TechCompare recommendation:

125% Scaling (134.43% exact)

125% scalingWindows 11
Monitor and interface at proportional physical sizes

Recommended monitors

Based on the specs you entered, here are the monitors TechCompare recommends.

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This 34-inch 3440 × 1440 monitor setup Compare scaling settings, desktop styles, and example windows in the full tool.
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How this is calculated

Using both pixel dimensions gives about 109.68 PPI. The 125% setting produces a modeled desktop of 2752 × 1152. At 150%, it becomes about 2293 × 960. The extra width helps accommodate a browser and editor next to each other, but higher scaling still uses up some of that room. This scenario is specifically for 3440 × 1440. A 2560 × 1080 or 5120 × 2160 ultrawide needs its own resolution and diagonal calculation.

Verdict

Try 125% if you want a broad workspace while staying close to our reference interface size. Compare 150% if larger menus and text help you work comfortably. An ultrawide doesn't remove the tradeoff between interface size and workspace, it gives that tradeoff a wider canvas. Enter your exact resolution in the full tool, then check both the browser-and-editor layout and a maximized spreadsheet to see which scale best fits your workflow.

More display scaling scenarios

27-inch 1440p monitor
Recommended 125% scaling for comfortable text while keeping plenty of workspace on a 1440p screen.
View details ➜
27-inch 4K monitor
Recommended 200% scaling for razor-sharp text matching standard 1080p physical interface sizes.
View details ➜
32-inch 4K monitor
Recommended 175% scaling to balance generous desktop workspace with crisp interface elements.
View details ➜

Related guides

34" ultrawide (3440×1440) PPI
Pixel density for a 3440 × 1440 ultrawide monitor.
View guide ➜
34" 21:9 ultrawide screen size
Physical dimensions and width of a 34-inch 21:9 ultrawide.
View guide ➜
1500R 34" ultrawide curve
Curvature depth and viewing comfort on a 34-inch ultrawide.
View guide ➜

Frequently asked questions

What scaling should I use with a 34-inch 1440p ultrawide monitor?
TechCompare recommends starting at 125%. The exact target is 134.43%, based on our 27-inch (68.6 cm) 1080p reference at 100%. It's a size preference, so compare nearby settings and choose the one that feels comfortable on your own display.
Is this the same as Windows' recommended scaling?
No. TechCompare uses its own preferred physical interface size, based on a 27-inch (68.6 cm) 1080p monitor at 100%. We calculate its full pixel density and match other displays to that reference. This tool doesn't detect the setting Windows marks as Recommended. Comfort, eyesight, viewing distance, and your apps can make a different percentage suit you better.
Does scaling change my monitor's resolution or PPI?
Scaling changes how many panel pixels a logical interface unit occupies. It doesn't change the panel's physical pixel density. A 3840 × 2160 display at 200% has a modeled 1920 × 1080 logical desktop while still using the 4K panel. Keep the display at its native resolution when comparing scaling. Microsoft explains resolution and scaling settings.
How do I change display scaling in Windows 11?
Open Settings > System > Display, select the monitor you want to change, then choose a percentage under Scale in the Scale & layout section. Try your preferred setting in a few everyday apps. This preview is a planning aid and won't apply anything to Windows. See Microsoft's display settings guide for the current steps.
Does Ubuntu GNOME support every percentage in the preview?
The dropdown models interface sizes from 100% to 500%. It doesn't check which settings your Ubuntu version, desktop session, or graphics setup offers. The Ubuntu top panel and Dock use illustrative dimensions. Choose the scale that's actually available in your display settings, then use the preview to understand the size and workspace tradeoff.
Is the desktop preview life-size or pixel-perfect?
No. It shrinks to fit the page while preserving panel proportions and modeled interface sizes. Example windows, icons, and fonts are illustrations. The Windows taskbar uses a 48-unit reference measured on one desktop, while the Ubuntu panel and Dock use sizing assumptions. Compare relative layout space here, then judge actual text and app rendering on your own monitor.

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