Accessibility · official-source review · reviewed 2026-10-10
Most mobile buttons are too small for fingers to tap accurately, causing errors and frustration.
Check whether your interactive targets meet WCAG 2.2 minimum target size (24 CSS pixels).
Web and app builders checking tap target sizes for mobile accessibility.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Measure the clickable/tappable width and height of your button or link in CSS pixels.
Targets must also have at least 8px spacing to adjacent targets if they are smaller than 44px.
Increase tap target area to at least 24×24 CSS pixels, ideally 44×44 for critical controls.
Test on a real phone, not just on desktop.
A 20×20 pixel button fails the 24px minimum; size it to at least 24×24 and keep 8px spacing to other targets.
Use your own source and details. The example is not a record about a real person or organization.
W3C Web Accessibility Initiative · reviewed 2026-10-10
What this source supports: WCAG 2.2 requires a minimum 24×24 CSS pixel target size for pointer inputs, with spacing exceptions when targets are at least 8 pixels apart.
Source limit: Target size is one of many pointer-accessibility requirements; test on real touch devices.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This compares target sizes you measure to WCAG 2.2 minimum size. It does not inspect your page.
Target size is one of many pointer-accessibility requirements; test on real touch devices.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Compare tap target dimensions against WCAG 2.2 minimum size.
This compares measured sizes. It does not inspect your page or code.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Compare tap target dimensions against WCAG 2.2 minimum size.
Free · no account · no upload
Open Touch Target Size Accessibility CheckThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Touch Target Size Accessibility Check. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.