Monitor size comparison
34" 21:9 vs 42" 16:9: Full Size Comparison
Compare exact dimensions, pixel density, content size, and desk fit for these two displays.
Specifications
| Metric | 34 in 21:9 | 42 in 16:9 | Diff |
|---|---|---|---|
| Width | 31.25" | 36.61" | +17.1% |
| Height | 13.39" | 20.59" | +53.7% |
| Area | 418.6 in² | 753.8 in² | +80.1% |
| Diagonal | 34" | 42" | +23.5% |
| Pixel Density | 82 ppi | 105 ppi | +28.4% |
| 16:9 content | 27.32" | 42" | +53.7% |
| 4:3 content | 22.32" | 34.32" | +53.7% |
| 2.35:1 content | 33.96" | 39.78" | +17.1% |
The 34" 21:9 is 31.25" (79.4 cm) wide and 13.39" (34 cm) tall, while the 42" 16:9 is 36.61" (93 cm) wide and 20.59" (52.3 cm) tall. That makes the 42" 16:9 the larger screen by 80.1% of usable area.
The 34" 21:9 measures 31.25" (79.4 cm) wide by 13.39" (34 cm) tall, with a total screen area of 418.6 square inches. The 42" 16:9 measures 36.61" (93 cm) wide by 20.59" (52.3 cm) tall, covering 753.8 square inches.
In direct comparison: the 42" 16:9 is 17.1% wider, the 42" 16:9 is 53.7% taller, and 42" 16:9 offers 80.1% 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 2560x1080, the 34" 21:9 achieves 82 PPI. The 42" 16:9 at 3840x2160 reaches 105 PPI. The 42" 16:9 has 28.4% higher pixel density, resulting in sharper text and images.
For 16:9 content (most videos and games), the 34" 21:9 provides an effective diagonal of 27.3", while the 42" 16:9 provides 42". This is crucial when comparing ultrawides to standard displays.
Frequently Asked Questions
- What are the exact dimensions of a 34" 21:9 monitor?
- A 34" 21:9 monitor measures 31.25" (79.4 cm) wide by 13.39" (34 cm) tall, with a screen area of 418.6 square inches.
- What are the exact dimensions of a 42" 16:9 monitor?
- A 42" 16:9 monitor measures 36.61" (93 cm) wide by 20.59" (52.3 cm) tall, with a screen area of 753.8 square inches.
- Which is bigger: 34" 21:9 or 42" 16:9?
- The 42" 16:9 is 80.1% larger in total screen area, though the 34" 21:9 may be taller depending on aspect ratio.
- How much desk space do I need for a 42" 16:9?
- A 42" 16:9 requires at least 36.61" of desk width. We recommend 42.61" to allow comfortable margins on each side.
- Which has better pixel density: 34" 21:9 or 42" 16:9?
- The 42" 16:9 at 3840x2160 has 105 PPI, which is 28.4% higher than the 34" 21:9's 82 PPI.
- How does 16:9 content look on these displays?
- On the 34" 21:9, 16:9 content appears at an effective 27.3" diagonal. On the 42" 16:9, it appears at 42". Ultrawides display 16:9 content with black bars on the sides.