How to choose the right touch-screen size for QSR
A 5-question framework for choosing between 21.5", 27", 32" and 43" displays in quick-service restaurant deployments.
There is no single "right" touch screen size for QSR. The right size is the smallest one that meets your use case — bigger is not better in QSR, because larger panels increase ordering time and reduce throughput. Use this five-question framework to land on the right size.
1. Standing or seated?
Counter-top standing-use kiosks need to be at least 27" so users at typical 1.5–1.8 m heights can reach the bottom of the screen without bending. Seated-use kiosks (drive-thru-side or dine-in tables) can be 21.5" comfortably.
2. How many items per order?
Build-your-own concepts (5+ items in a typical order) need 32" or larger to fit the modifier matrices. Limited menu concepts (3 items max) can use 27" without scrolling friction.
3. Walk-up or queue?
Walk-up kiosks need to be visible from 3+ meters. A 32" screen reads at 3m; a 21.5" screen reads at 1.5m. If the kiosk is the queue terminator, go larger.
4. ADA compliance?
ADA reach range is 380–1220 mm. Any kiosk with critical UI elements above 1220 mm fails. A 43" portrait orientation puts the menu top above ADA range — choose 32" or smaller for accessible deployments.
5. Brightness budget
Each step up in size doubles power consumption. WM215DS draws ~25 W; WM430DS draws ~60 W. For 24/7 deployments with electricity costs, that adds up. Quote the operational cost, not just the unit cost.