Size guide
21-inch monitor dimensions
A 21-inch display changes shape depending on aspect ratio. Use these measured dimensions to estimate desk fit, screen area, and adjacent-size or ultrawide alternatives.
| Aspect ratio | Width | Height | Area |
|---|---|---|---|
| 16:9 standard | 18.3 in | 10.3 in | 188.4 sq in |
| 21:9 ultrawide | 19.3 in | 8.27 in | 159.7 sq in |
| 32:9 super ultrawide | 20.22 in | 5.69 in | 114.9 sq in |
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