34" 21:9 vs 40" 21:9 Monitor Size Comparison
Visual comparison of 34" 21:9 vs 40" 21:9. The 40" 21:9 has 39% more screen area (36.8" × 15.8" vs 31.3" × 13.4"). Free interactive tool.
Quick Comparison Facts
39%
More screen area
31.3" × 13.4"
34" 21:9 (W×H)
36.8" × 15.8"
40" 21:9 (W×H)
419.4 vs 581.4
Area (sq in)
Display 1
Display 2
Size Comparison
Display 1: 34in 21x9 (horizontal)
Display 2: 40in 21x9 (horizontal)
Comparison Details
Display 1
34in diagonal
31.3" × 13.4" (W×H)
419.4 sq in area
21:9
Difference
39%
area difference
18%
diagonal difference
Display 2
40in diagonal
36.8" × 15.8" (W×H)
581.4 sq in area
21:9
Which Size Should You Choose?
Choose the 34" 21:9 if:
- You have a standard-depth desk (24" or less)
- You primarily do single-app focused work
- You prefer higher pixel density at closer distances
- Budget or desk space is limited
Choose the 40" 21:9 if:
- You multitask with side-by-side windows
- You work with large spreadsheets, timelines, or code
- Gaming immersion is important to you
- You have a deeper desk (28"+ recommended)