Galaxy S25 Ultra screen size
Galaxy S25 Ultra: 6.9″, 1440 × 3120, 498 PPI, 384 × 832 CSS viewport at DPR 3.75.
To proportion
6.9″
- Display size
- 6.9″ (17.5 cm) diagonalofficial
- Resolution
- 1440 × 3120 pxofficial
- Pixel density
- 498 PPIofficial
- Aspect ratio
- 19.5:9calculated
- Physical size (display)
- 2.89″ × 6.26″ (7.3 × 15.9 cm)calculated
- CSS viewport
- 384 × 832 pxreference
- Device pixel ratio
- 3.75reference
- Release year
- 2025
For developers
/* Galaxy S25 Ultra — portrait reference, not a breakpoint */
viewport: 384 × 832 CSS px
panel: 1440 × 3120 · DPR 3.75
/* Test immediately below and above your layout breakpoints. */Tailwind breakpoint
base
0px-639px
Bootstrap breakpoint
xs
0px-575px
Image slot example
1536 × 864
384px wide at DPR 3.75
Responsive testing plan
Galaxy S25 Ultra responsive workflow
Use the 384 × 832 CSS px at DPR 3.75 as a real QA target, then pair it with nearby widths for regression testing.
Values marked official come from manufacturer specifications; calculated values are derived from them; reference values are developer layout references and can vary with browser, zoom and operating-system settings.
Sources: Samsung · Facts reviewed 2026-08-07
Phones with a similar screen size
Devices with a similar viewport
Devices with a similar DPR
Related tools
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- Viewport Size CheckerSee your browser's CSS viewport size and window size live. Updates as you resize — with current responsive breakpoint for developers.
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- Responsive Image CalculatorCalculate responsive image export sizes from CSS pixels and DPR. Generate srcset, sizes and CSS image-set snippets for crisp images.
- PPI CalculatorCalculate PPI from resolution and screen size. Instant results with the formula worked through your numbers, plus physical dimensions and dot pitch.