ScreenSizeCompare
Manual: compare any two screens by diagonal and aspect ratio.
Manual mode Device lists

Manual screen comparison

Enter diagonal (in inches) and aspect ratio (W:H) for Screen A and Screen B. Hit Compare to see overlay and detailed size differences.

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Screen A (blue)
Example: TV 55″, laptop 15.6″, phone 6.1″
:
TVs: 16:9 · Many laptops: 16:10 · Ultrawide: 21:9.
Screen B (green)
Example: 65″ TV, 27″ monitor, 14″ laptop
:
Older monitors / some tablets: 4:3.
Quick presets: 55″ vs 65″ TV (16:9) 24″ vs 27″ monitor 14″ 16:10 vs 15.6″ 16:9
Result: Screen B is about 26.6% larger by screen area.
Screen A (24.00″, 16:9) Screen B (27.00″, 16:9)
Screen A
Screen B
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Screen A

Manual input · 24.00″ · 16:9

Width
20.92″
Height
11.77″
Area
246.1 in²
Shape
1.78:1
Recommended viewing distance
24 in

Screen B

Manual input · 27.00″ · 16:9

Width
23.53″
Height
13.24″
Area
311.5 in²
Shape
1.78:1
Recommended viewing distance
24 in
Metric Screen A Screen B Diff (Screen A vs Screen B)
Diagonal 24.00″ 27.00″ -11.1%
Width 20.92″ 23.53″ -11.1%
Height 11.77″ 13.24″ -11.1%
Area 246.12 in² 311.50 in² -21.0%

Δ diagonal: 3.00″, Δ width: 2.61″, Δ height: 1.47″.

Shapes are effectively the same (aspect within ~2%).

Overlays are computed from diagonal and aspect ratio only. All dimensions in inches; area in square inches.