Monitor size comparison
34" 21:9 vs 40" 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 | 40 in 16:9 | Diff |
|---|---|---|---|
| Width | 31.25" | 34.86" | +11.6% |
| Height | 13.39" | 19.61" | +46.4% |
| Area | 418.6 in² | 683.7 in² | +63.3% |
| Diagonal | 34" | 40" | +17.6% |
| Pixel Density | 82 ppi | 55 ppi | -32.6% |
| 16:9 content | 27.32" | 40" | +46.4% |
| 4:3 content | 22.32" | 32.68" | +46.4% |
| 2.35:1 content | 33.96" | 37.89" | +11.6% |
The 34" 21:9 is 31.25" (79.4 cm) wide and 13.39" (34 cm) tall, while the 40" 16:9 is 34.86" (88.6 cm) wide and 19.61" (49.8 cm) tall. That makes the 40" 16:9 the larger screen by 63.3% 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 40" 16:9 measures 34.86" (88.6 cm) wide by 19.61" (49.8 cm) tall, covering 683.7 square inches.
In direct comparison: the 40" 16:9 is 11.6% wider, the 40" 16:9 is 46.4% taller, and 40" 16:9 offers 63.3% 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 40" 16:9 at 1920x1080 reaches 55 PPI. The 34" 21:9 has 32.6% 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 40" 16:9 provides 40". 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 40" 16:9 monitor?
- A 40" 16:9 monitor measures 34.86" (88.6 cm) wide by 19.61" (49.8 cm) tall, with a screen area of 683.7 square inches.
- Which is bigger: 34" 21:9 or 40" 16:9?
- The 40" 16:9 is 63.3% 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 40" 16:9?
- A 40" 16:9 requires at least 34.86" of desk width. We recommend 40.86" to allow comfortable margins on each side.
- Which has better pixel density: 34" 21:9 or 40" 16:9?
- The 34" 21:9 at 2560x1080 has 82 PPI, which is 32.6% higher than the 40" 16:9's 55 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 40" 16:9, it appears at 40". Ultrawides display 16:9 content with black bars on the sides.