Safe Area Calculator

Use the following tool to calculate the small safe area for flashing visual elements on any screen, at any distance.

Distance to Screen

Screen Size (in pixels)

Width

Height

Screen Diagonal

Safe Area Size (width × height)

You may use any type of pixel when inputting the screen size (device pixel or reference pixel).

You may input your distance either in millimeters (mm), or inches (in) by using the toggle next to the input.

This tool helps to meet the technique G176, which satisfies criterion 2.3.1 from the WCAG.

The math found in G176 is incorrect, and needs to be updated. This tool uses a more modern calculation.