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Screen Size Comparison Tool

Compare phones, tablets, laptops, monitors, and TVs by CSS viewport, physical resolution, DPR, PPI, and relative screen shape.

Quick comparison

CSS viewport area

27-inch QHD monitor

27-inch QHD monitor is about 820% larger

Physical pixels

27-inch QHD monitor

27-inch QHD monitor is about 2% larger

Physical screen area

27-inch QHD monitor

27-inch QHD monitor is about 1724% larger

Visual comparison

Compare viewport shapes

Pick two records and compare CSS viewport or physical resolution shapes. The drawing is scaled for relative size, so it is useful for layout intuition before opening the detailed records.

Left device
Right device

CSS viewport comparison

Compare two devices to see the relative area.

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Device

Family · DPR · PPI

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Device

Family · DPR · PPI

Comparison details

Metric iPhone 15 Pro Max 27-inch QHD monitor
CSS viewport430 × 9322,560 × 1,440
Physical resolution1,290 × 2,7962,560 × 1,440
DPR31
PPI460109
Diagonal6.7 inches27 inches
Estimated physical area17.1 in²311.5 in²

Testing note: Use this comparison tool before choosing a target viewport, testing responsive layouts, or explaining why two displays with different physical sizes can behave very differently in CSS.

Frequently asked questions

Should I compare viewport size or physical resolution?

Use viewport size for responsive CSS layout decisions. Use physical resolution for display context, screenshots, and media sharpness.

Why can a phone have more pixels than a monitor?

High-DPI phones pack many physical pixels into a small display, while CSS viewport size remains much smaller.

Is the visual comparison exact?

It is a scaled reference for layout intuition. Browser zoom, OS scaling, and device modes can change live reported values.

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65 vs 75 Inch TV Size Comparison

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