Monitor size comparison
17" 16:9 vs 21" 16:9: Full Size Comparison
Compare exact dimensions, pixel density, content size, and desk fit for these two displays.
Specifications
| Metric | 17 in 16:9 | 21 in 16:9 | Diff |
|---|---|---|---|
| Width | 14.82" | 18.3" | +23.5% |
| Height | 8.33" | 10.3" | +23.5% |
| Area | 123.5 in² | 188.4 in² | +52.6% |
| Diagonal | 17" | 21" | +23.5% |
| Pixel Density | 130 ppi | 105 ppi | -19% |
| 16:9 content | 17" | 21" | +23.5% |
| 4:3 content | 13.89" | 17.16" | +23.5% |
| 2.35:1 content | 16.1" | 19.89" | +23.5% |
The 17" 16:9 is 14.82" (37.6 cm) wide and 8.33" (21.2 cm) tall, while the 21" 16:9 is 18.3" (46.5 cm) wide and 10.3" (26.2 cm) tall. That makes the 21" 16:9 the larger screen by 52.6% of usable area.
The 17" 16:9 measures 14.82" (37.6 cm) wide by 8.33" (21.2 cm) tall, with a total screen area of 123.5 square inches. The 21" 16:9 measures 18.3" (46.5 cm) wide by 10.3" (26.2 cm) tall, covering 188.4 square inches.
In direct comparison: the 21" 16:9 is 23.5% wider, the 21" 16:9 is 23.5% taller, and 21" 16:9 offers 52.6% more screen area. The width delta is the main desk-fit number, while the height delta shows how much vertical space changes for documents, timelines, and video.
At 1920x1080, the 17" 16:9 achieves 130 PPI. The 21" 16:9 at 1920x1080 reaches 105 PPI. The 17" 16:9 has 19% higher pixel density, resulting in sharper text and images.
Frequently Asked Questions
- What are the exact dimensions of a 17" 16:9 monitor?
- A 17" 16:9 monitor measures 14.82" (37.6 cm) wide by 8.33" (21.2 cm) tall, with a screen area of 123.5 square inches.
- What are the exact dimensions of a 21" 16:9 monitor?
- A 21" 16:9 monitor measures 18.3" (46.5 cm) wide by 10.3" (26.2 cm) tall, with a screen area of 188.4 square inches.
- Which is bigger: 17" 16:9 or 21" 16:9?
- The 21" 16:9 is 52.6% larger in total screen area, though the 17" 16:9 may be taller depending on aspect ratio.
- How much desk space do I need for a 21" 16:9?
- A 21" 16:9 requires at least 18.3" of desk width. We recommend 24.3" to allow comfortable margins on each side.
- Which has better pixel density: 17" 16:9 or 21" 16:9?
- The 17" 16:9 at 1920x1080 has 130 PPI, which is 19% higher than the 21" 16:9's 105 PPI.