Screen Size Approximation Chart
I am surprised that people still misjudge the size of the screen needed. It is easy to test out and make minor adjustments but that might not be enough.
This is a guide from Microsoft that might help you.
Use it when someone asks you how large of a screen you need.
| Audience size | Suggested screen size |
| 3-5 people | 21 inches diagonal (53.34 cm) |
| 5-9 people | 29 inches diagonal (73.66 cm) |
| 10-15 people | 37 inches diagonal (93.98 cm) |
| 16-35 people | 60 inches diagonal (152.4 cm) |
| 36-50 people | 72 inches diagonal (182.88 cm) |
| 51-140 people | 120 inches diagonal (304.8 cm) |
| 141-220 people | 150 inches diagonal (381.0 cm) |
| 221-390 people | 200 inches diagonal (508.0 cm) |
| 391+ people | 300 inches diagonal (762.0 cm) |
Remember, the average person doesn’t have perfect vision.
Err on the side of caution and make the screen a bit bigger.
