Monitor Size Chart: Width, Height & Area by Screen Size 2026

The monitor size chart

The 16:9 table below covers the usual monitor sizes, with the real width, height and viewable area for each diagonal, in inches and centimetres. The 27-inch row is the default — the calculator opens on it. Every cell is worked out from the stated rules, never hand-typed.

How to use the chart

On the defaults — a 27-inch 16:9 screen — the real size is 23.53 in by 13.24 in, an area of 311.50 sq in (59.77 cm by 33.62 cm), and the nearest table row is 27 in. The diagonal is the advertised size — the real width and height come from the aspect ratio: a 34-inch 21:9 screen is 31.25 in × 13.39 in, wider but SHORTER than a 34-inch 16:9 at 29.63 in × 16.67 in. Measure the space the screen must fit, not just the diagonal — and remember the bezels add roughly half an inch to an inch beyond the screen itself.

21:9 ultrawide

Ultrawide screens trade height for width: a 34-inch 21:9 is 31.25 in wide but only 13.39 in tall, against 29.63 in by 16.67 in for the 34-inch 16:9. Same diagonal, very different shape — check both numbers before you buy.

Every branch, checked

24 in 16:9: 20.92 × 11.77 in, area 246.12 sq in, 53.13 × 29.89 cm, nearest table row 24 in. The classic office monitor size.

32 in 16:9: 27.89 × 15.69 in, area 437.55 sq in, 70.84 × 39.85 cm, nearest table row 32 in. A big step up in area from the 24-inch screen, without going ultrawide.

34 in 16:9: 29.63 × 16.67 in, area 493.96 sq in, 75.27 × 42.34 cm, nearest table row 34 in. The widescreen sweet spot for a desk that has room to spare.

43 in 16:9: 37.48 × 21.08 in, area 790.08 sq in, 95.19 × 53.55 cm, nearest table row 43 in. A very large desk screen — check the width against your desk before you buy.

34 in 21:9: 31.25 × 13.39 in, area 418.55 sq in, 79.38 × 34.02 cm, nearest table row 34 in. The ultrawide: wider than the 34-inch widescreen, but shorter — compare the heights before you choose.

49 in 21:9: 45.04 × 19.30 in, area 869.33 sq in, 114.40 × 49.03 cm, nearest table row 49 in. The biggest screen in the table — a super-ultrawide that replaces two monitors.

The reverses

Width for a 27 in screen: 23.53 in — a 26 in screen is 22.66 in wide. At 27 in the size is 23.53 × 13.24 in, area 311.50 sq in, 59.77 × 33.62 cm, nearest table row 27 in. The star is INCHES.

Height for a 32 in screen: 15.69 in — a 31 in screen is 15.20 in tall. At 32 in the size is 27.89 × 15.69 in, area 437.55 sq in, 70.84 × 39.85 cm, nearest table row 32 in. The star is INCHES.

Area for a 27 in screen: 311.50 sq in — a 26 in screen is 288.85 sq in. At 27 in the size is 23.53 × 13.24 in, area 311.50 sq in, 59.77 × 33.62 cm, nearest table row 27 in. The star is SQUARE INCHES.

Diagonal for a width of 24 in: exact 27.5363 in; displayed 27.54 in → width 24.00 in; 27.53 in → width 23.99 in. At 27.54 in the size is 24.00 × 13.50 in, area 324.09 sq in, 60.97 × 34.29 cm, nearest table row 27 in. The star is INCHES.

Smallest diagonal with a width of 30 in or more: exact 34.4204 in; displayed 34.42 in → width 30.00 in; the smallest TABLE diagonal is 38 in, because a 34 in screen is only 29.63 in wide. At 34.42 in the size is 30.00 × 16.87 in, area 506.24 sq in, 76.20 × 42.86 cm, nearest table row 34 in. The star is INCHES.

21:9 width for a 34 in screen: 31.25 in (height 13.39 in); a 33 in 21:9 screen is 30.33 in wide. At 34 in 21:9 the size is 31.25 × 13.39 in, area 418.55 sq in, 79.38 × 34.02 cm, nearest table row 34 in. The star is INCHES.

What the defaults assume

The table is first-principles geometry from the diagonal and the aspect ratio — 16:9: w = d × 16/√337, h = d × 9/√337; 21:9: w = d × 21/√522, h = d × 9/√522; area = w × h; cm = in × 2.54 — every figure rounded half-up to 2dp, never hand-typed. The smallest row in the table is 21.5 in: 18.74 × 10.54 in, area 197.52 sq in, 47.60 × 26.77 cm, nearest table row 21.5 in. The largest row is 49 in: 42.71 × 24.02 in, area 1,025.95 sq in, 108.48 × 61.02 cm, nearest table row 49 in. A 20 in screen — 17.43 × 9.81 in, area 170.92 sq in, 44.28 × 24.91 cm, nearest table row 21.5 in — sits below the table; its nearest row is 21.5 in. A 50 in screen — 43.58 × 24.51 in, area 1,068.25 sq in, 110.69 × 62.26 cm, nearest table row 49 in — sits above the table; its nearest row is 49 in. Both are model-level outcomes, not errors: the geometry works for any diagonal. A 27.5 in screen — 23.97 × 13.48 in, area 323.15 sq in, 60.88 × 34.24 cm, nearest table row 27 in — has nearest row 27 in, 0.5 away vs 4.5 to 32. A 30 in screen — 26.15 × 14.71 in, area 384.57 sq in, 66.41 × 37.36 cm, nearest table row 32 in — has nearest row 32 in, 2 away vs 3 to 27.

Output · formula · meaning

Who uses this

• The desk buyer measuring a shelf: they learn a 27-inch screen is 23.53 in wide — and they check 59.77 cm before ordering.
• The ultrawide shopper comparing shapes: they learn a 34-inch 21:9 is 31.25 in wide but only 13.39 in tall, against a 34-inch 16:9 at 29.63 in by 16.67 in — and they check the heights before choosing.
• The dual-monitor planner: they learn a 32-inch screen is 27.89 in wide — and they check the area (437.55 sq in) to see how much screen they are actually getting.
• The big-screen buyer: they learn a 49-inch screen is 42.71 in wide and 24.02 in tall — and they check the nearest row is 49 in before measuring the wall.

Accuracy & limitations

The table is first-principles: the width and height come straight from the diagonal and the aspect ratio — 16:9: w = d × 16/√337, h = d × 9/√337; 21:9: w = d × 21/√522, h = d × 9/√522; area = w × h; cm = in × 2.54 — every figure rounded half-up to 2dp, never hand-typed. What the model cannot do is measure YOUR monitor: it ignores the bezel (roughly half an inch to an inch beyond the screen), the stand, curved screens, and the difference between the advertised diagonal and the measured panel — makers round the diagonal, so two 27-inch monitors can differ by a fraction of an inch. Use the chart to check the fit, then measure the real monitor — bezel included — before you buy the desk or the mount.

Frequently asked questions