Mouse DPI Analyzer
DPI is how many movement counts your mouse reports per inch traveled. Mark a known distance on your desk, lock the cursor, slide the mouse across it in a straight line, and we do the division.
Click to start measuring
Mark 2 inches on your desk (or use your mousepad's known width). Clicking locks your cursor so we can read raw movement counts.
For accuracy, disable pointer acceleration first (Windows: "Enhance pointer precision" off; macOS: reduce tracking speed). Repeat 2–3 times and average the results.
Why measure when the box says 1600? Because the box is often optimistic — sensor DPI deviates a few percent between units, some budget mice misreport wildly, and OS pointer acceleration silently inflates counts. The measurement is only as good as your inputs: disable "Enhance pointer precision" (Windows) or set flat tracking (macOS/Linux) first, move slowly and straight, and average three runs. Knowing true DPI matters when replicating your sensitivity across games or switching mice — eDPI (DPI × in-game sens) only transfers if the DPI number is real.