Galaxy S24 Ultra vs Pixel 9: screen size and viewport
The Galaxy S24 Ultra lays web pages out at 384 × 832 CSS px with a pixel ratio of 2.813; the Pixel 9 at 412 × 924 with 2.625. The Pixel 9 is 28 px wider and 92 px taller.
The two screens side by side
Specs compared
| Spec | Galaxy S24 Ultra | Pixel 9 | Difference |
|---|---|---|---|
| Viewport, portrait (CSS px) | 384 × 832 | 412 × 924 | −28 px wide, −92 px tall |
| Device pixel ratio | 2.813 | 2.625 | +0.188 for the Galaxy S24 Ultra |
| Physical resolution | 1080 × 2340 | 1082 × 2426 | Pixel 9: 4% more pixels |
| Aspect ratio | 19.5:9 | 20:9 | Pixel 9 is taller |
| Visible height, portrait, with browser bars | ~736 px | ~828 px | −92 px for the Galaxy S24 Ultra |
| Landscape width (CSS px) | 832 px | 924 px | −92 px for the Galaxy S24 Ultra |
| Visible height, landscape | ~304 px | ~332 px | −28 px for the Galaxy S24 Ultra |
| First released | 2024 | 2024 | same year |
| Engine in MobileCheck | Chromium (Chrome) | Chromium (Chrome) | same engine |
CSS px are the units media queries see. Visible heights subtract the status bar and the Chrome on Android bars as set in our device profiles; real bar heights vary with settings and scrolling. The release year is that of the first model with each screen.
What this means for your layout
How the width difference affects your layout
The Pixel 9 is 28 CSS px wider (412 vs 384, 7% more). One common breakpoint falls between them: (min-width: 390px) (a common phone test width) matches the Pixel 9 but not the Galaxy S24 Ultra, so a rule written for that width applies on only one of the two.
In a 2-column card grid with 16 px page padding and 16 px gaps, each card is 182 px wide on the Pixel 9 and 168 px on the Galaxy S24 Ultra. Check that buttons, prices and long words still fit in the narrower one.
Pixel density and image sizes
The Galaxy S24 Ultra has the denser screen: 2.813× against 2.625×. A full-width image (sizes="100vw") needs about 1080 px on the Galaxy S24 Ultra and 1082 px on the Pixel 9 to look sharp — more on the Galaxy S24 Ultra even though its viewport is narrower.
With a srcset such as 640w, 828w, 1080w, 1290w, 1440w, 1640w, 2048w, the browser would normally pick the 1080w file on the Galaxy S24 Ultra and the 1290w file on the Pixel 9. Leave out the 1290w candidate and the Pixel 9 upscales a smaller file.
Both pixel ratios are fractional: one CSS pixel isn't a whole number of device pixels, so 1 px borders and hairlines can be rounded unevenly. Check thin lines on both rather than assuming they match.
How much fits above the fold
On first load about 828 px of the page is visible on the Pixel 9 and 736 px on the Galaxy S24 Ultra: 92 px less (13%) on the Galaxy S24 Ultra, roughly 3 lines of 16 px body text at a 1.5 line height.
If your main button sits just above the fold on the Pixel 9, it can end up below it on the Galaxy S24 Ultra. Keep the headline and the main action within the first 736 px, and size full-screen sections with 100svh rather than 100vh — see the 100vh problem on mobile.
Relative to its width, the Pixel 9 has the taller screen (19.5:9 vs 20:9), so the same content is laid out narrower but more of its length fits at once.
In landscape
Turned sideways, the Galaxy S24 Ultra is 832 px wide and the Pixel 9 924 px; (min-width: 840px) matches only the Pixel 9 in landscape. The visible height drops to about 304 and 332 px, so a 64 px sticky header covers 21% and 19% of the screen — under the 25% at which MobileCheck flags fixed bars covering the page.
Same browser engine
Both run Android, so both render with Chromium, the engine behind Chrome. Engine quirks are the same; the differences above come from size and density alone. See how to test a website on Android.
More about these devices
- Galaxy S24 Ultra viewport size — one screen for the Samsung Galaxy S24 / S25 Ultra / A15 / A54 / A55
- Pixel 9 viewport size — one screen for the Google Pixel 9 / 9a / 10
Or open the free check with the Galaxy S24 Ultra and the Pixel 9 preselected: full-page screenshots in Chromium, with problems such as small text and crowded buttons highlighted.
Related comparisons
- iPhone 16 Pro vs Galaxy S24 Ultra — 402 vs 384 px wide, 3× vs 2.813×
- iPhone 16 Pro Max vs Galaxy S24 Ultra — 440 vs 384 px wide, 3× vs 2.813×
- iPhone 17 vs Pixel 9 — 402 vs 412 px wide, 3× vs 2.625×
- iPhone 17 Pro Max vs Pixel 10 — 440 vs 412 px wide, 3× vs 2.625×
- iPhone 15 Pro Max vs Galaxy S24 Ultra — 430 vs 384 px wide, 3× vs 2.813×
- iPhone Air vs Pixel 9 — 420 vs 412 px wide, 3× vs 2.625×
Compare other devices → · All mobile viewport sizes →
Frequently asked questions
Is the Galaxy S24 Ultra screen bigger than the Pixel 9?
In CSS pixels, which decide how much of a page fits, the Pixel 9 is larger: 412 × 924 against 384 × 832. The Pixel 9 has more physical pixels (1082 × 2426), which makes it sharper rather than roomier.
Do I need different CSS for the Galaxy S24 Ultra and the Pixel 9?
Only if your breakpoints fall between 384 and 412 px: a min-width query at 390px applies to one and not the other. A fluid layout handles both without device-specific rules.
How much of a web page is visible on the Galaxy S24 Ultra vs the Pixel 9?
About 384 × 736 CSS px on the Galaxy S24 Ultra and 412 × 828 on the Pixel 9 when a page first opens in portrait, after the status bar and Chrome on Android's bars. Bar heights are our device profiles' estimates.