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24 vs 27 vs 32 Inch Monitor: 77.8% More Area from the Smallest to the Largest
The three screen sizes compared
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Calculated from the diagonal
24-inch 16:9 screen
20.92 × 11.77 in (531 × 299 mm)
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Calculated from the diagonal
27-inch 16:9 screen
23.53 × 13.24 in (598 × 336 mm)
-
Calculated from the diagonal
32-inch 16:9 screen
27.89 × 15.69 in (708 × 398 mm)
The short answer
- 24 in20.92 × 11.77 in (531 × 299 mm) — 246.1 in² display area
- 27 in23.53 × 13.24 in (598 × 336 mm) — 311.5 in² display area, 26.6% more than 24 in
- 32 in27.89 × 15.69 in (708 × 398 mm) — 437.6 in² display area, 40.5% more than 27 in, 77.8% more than 24 in
See the sizes in AR (shown as boxes)
The three sizes as boxes at their published dimensions
Preparing 3D…
1 24 in screen2 27 in screen3 32 in screen
On a phone, the "View in your room (AR)" button places the boxes in your room. The boxes are locked to the published dimensions and cannot be resized. They show size only and are not 3D replicas of the products.
Drawn to the same scale
The formula
For any 16:9 diagonal d:
- Width = d × 16 / √(16² + 9²) = d × 16 / √337
- Height = d × 9 / √(16² + 9²) = d × 9 / √337
- √337 ≈ 18.3576
Millimeter values convert at 1 in = 25.4 mm exactly. Rounded values appear in the table; rounding note is below the table.
Dimensions side by side
| Size | Width | Height | Display area |
|---|---|---|---|
| 24 in | 20.92 in / 531 mm | 11.77 in / 299 mm | 246.1 in² |
| 27 in | 23.53 in / 598 mm | 13.24 in / 336 mm | 311.5 in² |
| 32 in | 27.89 in / 708 mm | 15.69 in / 398 mm | 437.6 in² |
| 27 vs 24 | +2.61 in (+66 mm) | +1.47 in (+37 mm) | +26.6% |
| 32 vs 27 | +4.36 in (+111 mm) | +2.45 in (+62 mm) | +40.5% |
| 32 vs 24 | +6.97 in (+177 mm) | +3.92 in (+100 mm) | +77.8% |
Widths and heights are rounded to 2 decimal places for inches and to the nearest millimeter. All differences use unrounded values, so a difference can be 1 mm off from subtracting the rounded figures in the table. These are screen panel dimensions only; monitor frames (bezels) add to the overall footprint. The figures assume the diagonal is exactly 24, 27 or 32 in. Some monitors in the 24-inch and 32-inch classes list 23.8 in and 31.5 in diagonals; the same formula gives 20.74 × 11.67 in (527 × 296 mm) and 27.45 × 15.44 in (697 × 392 mm) for those.
Pixels per inch (PPI) by resolution
| Resolution | 24 in | 27 in | 32 in |
|---|---|---|---|
| 1920×1080 (Full HD) | 91.8 PPI | 81.6 PPI | 68.8 PPI |
| 2560×1440 (QHD) | 122.4 PPI | 108.8 PPI | 91.8 PPI |
| 3840×2160 (4K UHD) | 183.6 PPI | 163.2 PPI | 137.7 PPI |
PPI = √(horizontal pixels² + vertical pixels²) ÷ diagonal in inches, computed from the nominal diagonal. Panels sold as 24 in and 32 in are often 23.8 in and 31.5 in (see the note above), which makes their PPI about 1–2% higher than the table. The same resolution on a larger screen means larger pixels, not more of them.
What the numbers mean
Going from 24 in to 27 in adds 2.61 in (66 mm) of width and 1.47 in (37 mm) of height. Centered on the same spot, the 27 in screen extends about 1.31 in (33 mm) further on each side.
Going from 27 in to 32 in adds another 4.36 in (111 mm) of width. The 32 in screen is 40.5% larger by area than the 27 in screen — a bigger jump than 24 → 27 (26.6%), because the diagonal grows by 5 in instead of 3 in and area scales with the square of the diagonal.
Going straight from 24 in to 32 in adds 77.8% more display area. The 32 in screen is 6.97 in (177 mm) wider, so it needs that much more desk width than a 24 in screen before counting the frame.
Product links
FAQ
What are the width and height of a 24-inch monitor screen?
A 16:9 screen with a 24 in diagonal measures 20.92 in (531 mm) wide and 11.77 in (299 mm) tall. These values come from w = 24 × 16 / √337 and h = 24 × 9 / √337. Some monitors sold in the 24-inch class list a 23.8 in diagonal, which gives 20.74 × 11.67 in (527 × 296 mm).
How much bigger is a 27-inch monitor than a 24-inch monitor?
A 27 in screen (23.53 × 13.24 in / 598 × 336 mm) has a display area of 311.5 in², which is 26.6% larger than the 24 in screen at 246.1 in².
How much bigger is a 32-inch monitor than a 27-inch monitor?
A 32 in screen (27.89 × 15.69 in / 708 × 398 mm) has a display area of 437.6 in², which is 40.5% larger than the 27 in screen at 311.5 in².
Is 32 inches a big difference compared to 24 inches?
Going from 24 in to 32 in adds 77.8% more display area, so the 32 in screen is about 1.8 times the area of the 24 in screen. It is 6.97 in (177 mm) wider and 3.92 in (100 mm) taller.
See also: Switch 2 vs Switch OLED vs Steam Deck — three gaming handhelds drawn to the same scale. iPhone 17 lineup sizes — all four models.
Sources
- Display diagonal and 16:9 aspect ratio: w = d × 16 / √337, h = d × 9 / √337 (trigonometry from the 16:9 ratio; √337 = √(256 + 81) ≈ 18.3576). No manufacturer spec used.
- Unit conversion: 1 in = 25.4 mm exactly (NIST Special Publication 811, 2008 edition).
- Examples of listed diagonals under the size class: Dell lists the 24 Monitor SE2425HM at "Diagonal Size 23.8" (dell.com, SE2425HM) and the UltraSharp 32 U3223QE at "Diagonal Size 31.5" (dell.com, U3223QE), both checked 2026-09-29.
- Checked: 2026-09-29.