Missed Target Counter
Count touches outside designated targets.
Tap, click or press Space to keep count.
Tap anywhere inside or press Space
How the Missed Target Counter Works
The Missed Target Counter adds 1 every time a touch lands outside every designated target on the screen. Touches inside a target count as hits, and the tool reports the miss rate.
- Show the targets: Place 1 or more targets of a set size on the surface.
- Tap the targets: Try to hit a target on every tap.
- Count misses: Every touch outside all targets adds 1 to the miss count.
- Compare hits and misses: Read the hit count, miss count and miss rate.
Missed Target Counter Formula
The Missed Target Counter miss rate equals misses divided by total touches, multiplied by 100. A touch is a miss when its distance from every target center is larger than the target radius.
- Distance
- Touch distance from a target center
- Radius
- Half of the target width
- Hits, Misses
- Touches inside and outside targets
Example: A user makes 80 touches with 6 misses. Miss rate = 6 ÷ 80 × 100 = 7.5%.
Missed Target Counter Reference Table
The Missed Target Counter conversion table shows approximate miss rates for different target sizes, assuming a 3 mm average touch error.
| Target size (px) | Target size (mm) | Target size (in) | Typical miss rate |
|---|---|---|---|
| 24 | 6.4 | 0.25 | 15% to 25% |
| 32 | 8.5 | 0.33 | 8% to 12% |
| 44 | 11.6 | 0.46 | 3% to 5% |
| 48 | 12.7 | 0.50 | 2% to 4% |
| 64 | 16.9 | 0.67 | 1% to 2% |
| 96 | 25.4 | 1.00 | Under 1% |
About the Missed Target Counter
A Missed Target Counter is a tool that tallies touches landing outside intended targets. The miss count measures how hard a layout is to use.
Miss rate falls quickly as targets grow. Moving from a 24 px target to a 48 px target cuts the miss rate by roughly 5 times for most adults, a pattern Fitts's law predicts.
Ways to Use the Missed Target Counter
There are 5 main uses of the Missed Target Counter, including layout testing and accessibility audits.
- Layout testing: Designers count misses on dense menus and toolbars.
- Accessibility audits: Auditors confirm targets meet WCAG 2.2 size rules.
- Motor skill drills: Users track falling miss counts with practice.
- Device comparison: Testers compare misses on small and large phones.
- Glove testing: Workers measure misses while wearing work gloves.
Tool Details
- Category
- Touch & Gesture Diagnostics
- Controls
- Taps and keys
- Input Support
- Touch, Pen, Mouse, Keys
- Offline Ready
- On your device