Monitor Size Comparison
presets · desk · snap · zoom · grid · rotate
Monitor layout & size simulator
Start with a pair, or choose a size and resolution and add a display.
Values describe the screen panel, excluding bezels and stands. Choose Custom to enter your own dimensions.
Choose a preset and add a display.This replaces the current layout with two screens. You can add other displays below.
How to compare monitor sizes and layouts
Choose a pair to compare screen dimensions in cm, PPI and area. Arrange and rotate both screens at the same scale to explore a dual-monitor layout.
A monitor’s inch size is its diagonal, not its width or height. Even at 27 inches, aspect ratios such as 16:9, 16:10, 21:9 and 32:9 produce different physical dimensions and desk arrangements. This simulator draws 30 laptop, tablet, monitor and TV presets at a shared scale. Choose a pair to place two screens side by side and compare their width and height in cm, PPI and panel area. Differences from display 1 to display 2 use the unrounded geometry. Rotating a display swaps its width and height while preserving its diagonal, PPI and area.
Use the comparison before replacing a monitor or arranging multiple displays. Estimate how panel widths fit your desk, compare screen heights and explore pixel density at different resolutions. The diagram is scaled for comparison, not a life-size ruler or a drawing of the complete product. The grid illustrates relative pixel density rather than every individual pixel. Calculations run in your browser and the tool does not save your inputs.
24·27·32-inch monitor dimensions and PPI
These values describe the panel without its bezel or stand. Equal diagonals and aspect ratios give equal panel widths and heights even when resolutions differ; a higher resolution increases PPI.
| Display | Resolution | Aspect ratio | Panel width × height | PPI |
|---|---|---|---|---|
| 24 in FHD | 1,920 × 1,080 | 16:9 | 53.1 × 29.9 cm | Approx. 92 |
| 27 in FHD | 1,920 × 1,080 | 16:9 | 59.8 × 33.6 cm | Approx. 82 |
| 27 in QHD | 2,560 × 1,440 | 16:9 | 59.8 × 33.6 cm | Approx. 109 |
| 27 in 4K UHD | 3,840 × 2,160 | 16:9 | 59.8 × 33.6 cm | Approx. 163 |
| 32 in QHD | 2,560 × 1,440 | 16:9 | 70.8 × 39.8 cm | Approx. 92 |
| 32 in 4K UHD | 3,840 × 2,160 | 16:9 | 70.8 × 39.8 cm | Approx. 138 |
| 34 in WQHD | 3,440 × 1,440 | 21:9 | 79.7 × 33.3 cm | Approx. 110 |
| 49 in DQHD | 5,120 × 1,440 | 32:9 | 119.8 × 33.7 cm | Approx. 109 |
PPI is the number of pixels per 1 inch of diagonal. For example, a 27-inch FHD panel has about 82PPI, QHD about 109PPI and 4K about 163PPI. Perceived text and interface sizes also depend on operating-system scaling.
When this tool is needed
- Compare actual panel width and height in cm when choosing between sizes such as 24 and 27 inches
- Check the height difference between two displays using snap alignment
- Estimate panel space for a 34-inch ultrawide, 49-inch super-ultrawide or 42-inch TV
Check before entering
- Inches measure the screen diagonal, excluding the bezel.
- Resolution (horizontal px × vertical px) determines the aspect ratio, PPI and grid density.
- Selecting a preset fills the diagonal and resolution automatically.
How to use
- Choose a ready-made pair to place both screens, or select a model, diagonal and resolution separately.
- For individual settings, select Add display. Choose Custom input for values outside the preset lists.
- Drag displays to move them and enable snapping to align their top, bottom or centre lines.
- Use Show grid to compare pixel density (PPI), and the rotate control to explore a portrait layout.
- Read each screen’s dimensions in cm, PPI, area and differences in the comparison table. The selected-display panel also shows diagonal and aspect ratio.
Read diagonal size and PPI together
For common 16:9 panels, a 24-inch screen is about 53cm wide, a 27-inch screen about 60cm and a 32-inch screen about 71cm. A higher resolution does not change physical panel size, but increases PPI and places pixels closer together. Text and controls may appear smaller at higher PPI, so consider Windows or macOS scaling as well. With Show grid enabled, FHD and 4K at the same 27-inch size show different grid densities.
Align screen heights and explore portrait rotation
Compare panel heights before deciding where displays should sit. Snapping aligns top, bottom, centre and edges within ±15px in the simulation and shows red guides. A portrait 24-inch 16:9 screen is about 53.1cm tall, taller than the roughly 33.6cm height of a landscape 27-inch screen. Compare the rotated dimensions and check the actual adjustment range of the stand or monitor arm instead of assuming that equal inch sizes align.
Sources and review criteria
Dimensions come from diagonal length and resolution ratio using geometry, without a live product database. They describe the panel and exclude bezels, so they may differ from a product’s outer dimensions. Representative pairs and rotated dimensions were reviewed on 2026-10-17. Automated calculation checks cover representative inputs, the static comparison table, desk scaling, aspect ratios and PPI/area preservation when rotating. Presets are illustrative configurations rather than a promise about a current retail model.
Calculated values cover the panel only, excluding bezels and stands. Product dimensions, curvature and pixel layout may differ. Check the manufacturer’s specifications before buying or planning mounting clearance.
FAQ
How does a 34-inch 21:9 screen compare in height with a 27-inch 16:9 screen?
A 34-inch ultrawide (21:9) has nearly the same panel height as a 27-inch display (16:9), with roughly 30% more width. Add the two presets to the desk and use snapping to compare their top and bottom edges directly.
What are the actual width and height of a 27-inch monitor?
A 27-inch 16:9 panel is approximately 59.8cm wide and 33.6cm high. Inches describe diagonal length, so the actual dimensions depend on aspect ratio (16:9, 16:10 or 21:9). Add a monitor to see its calculated dimensions in the selected-display panel.
Does changing resolution change physical size at the same diagonal?
If diagonal and aspect ratio are both equal, physical panel dimensions are equal. Different aspect ratios can change width and height at the same diagonal. More resolution places more pixels in the same area. Enable Show grid to compare pixel density on 27-inch FHD and 4K displays.
How do I simulate a portrait monitor layout?
Use the rotate icon (🔄), or select a monitor and press R to switch between 0° and 90°. The 27 landscape + 27 portrait pair is also ready to load. A portrait 27-inch 16:9 panel shows a width of 33.6cm and height of 59.8cm; PPI and area remain unchanged.
Should I compare screen heights for a dual-monitor setup?
Yes, comparing panel heights helps you see where the top and bottom edges align. With snapping enabled, dragging aligns edges and centre lines automatically. Use this as a layout estimate, then check your actual stand or monitor-arm adjustment range; the simulator excludes those parts.