This page shows the 2-digit, 4-digit, 6-digit and 8-Digit Maidenhead Locator Squares based on map zoom only. It is best used on a tablet, smartphone or touch screen PC but will also work with a scrolling mouse or the + and - map zoom buttons on the map itself.
To use, move the map so your target is in the middle of the screen and zoom in. Then as the zoom increases, so does the accuracy of the locator.