Summary
In comparison to a 27 inch 21x9 TV a 18 inch 4x3 is...24% smaller diagonally and 42% smaller by area as a 16x9 display.
2% larger diagonally and 3% larger by area as a 4x3 display.
Screen Size Comparison
18 inch 4x3 display vs 27 inch 21x9 display
| Buy From | 18 inch 4x3 | 27 inch 21x9 | |
| Amazon | 18 Inch TV | 27 Inch TV | |
| StatsUse cm | 18 inch 4x3 | 27 inch 21x9 | |
| Width | 14.40 inches | 24.82 inches | |
| Height | 10.80 inches | 10.64 inches | |
| Area | 155.52 inches² | 263.95 inches² | |
| As a 4:3 Display | 18.00 inches | 17.73 inches | |
| As a 16:9 Display | 16.52 inches | 21.69 inches | |
| As a 2.35:1 Display | 15.65 inches | 26.97 inches | |
| In Comparison | 18 inch 4x3 | 27 inch 21x9 | |
| Actual Aspect Ratios | 33.33% smaller diagonal 41.08% smaller area | 50.00% larger diagonal 69.72% larger area | |
| As a 4:3 Display | 1.54% larger diagonal 3.11% larger area | 1.52% smaller diagonal 3.02% smaller area | |
| As a 16:9 Display | 23.84% smaller diagonal 42.00% smaller area | 31.31% larger diagonal 72.41% larger area | |
| As a 2.35:1 Display | 41.98% smaller diagonal 66.33% smaller area | 72.34% larger diagonal 197.01% larger area | |
| Share your Comparison | 18 inch 4x3 display vs 27 inch 21x9 display |