About Us

Why we built it

Mouse software will happily display a configured DPI step — 800, 1600, whatever you picked in the driver — but the number the sensor reports and the number your hand experiences are not always the same thing. Smoothing, surface tuning, pointer speed sliders and “enhance pointer precision” all sit between the two.

The honest way to answer is measurement: a known physical distance, a straight swipe, and the sensor’s raw counts divided by that distance. That is the entire idea behind this site. Everything else on the page exists to make that one division trustworthy.

How the tool works

1. You mark two lines on your mousepad and tell us the gap between them.
2. You press and hold on the capture pad, which requests a pointer lock — and where the browser allows it, raw input with OS acceleration removed.
3. You swipe once from the first mark to the second. The engine sums every movement delta as a path length, so off-axis drift is counted instead of discarded.
4. The result appears with its diagnostics: counts, alignment, timing, spread across runs and the nearest standard DPI step. Two more swipes give you a median instead of a single reading.

All of it runs in your browser with the Pointer Lock API. There is no upload step, no backend to receive your swipe and no “processing…” spinner, because there is nothing to process remotely.

What we stand for

Who it is for

Competitive players who want a repeatable number to pair with in-game sensitivity — the CS2 or Valorant player re-checking eDPI after a driver update, the Apex player comparing a new mouse against the old one. Reviewers and testers verifying whether a sensor actually hits its rated DPI. Anyone buying a used mouse before trusting its driver. And people who simply dislike being told a value they cannot verify.

Accuracy, stated plainly

This is a browser-based measurement, not a lab instrument. Your result is only as good as your ruler, your swipe path and your surface: OS-level pointer scaling, a curved swipe or a two-millimetre mistake in the distance marks all move the number. That is why the tool reports alignment and spread alongside the DPI rather than hiding them — a tight spread across three runs is the closest thing to confidence a home test can offer. The accuracy notes list every known source of error.

Get in touch

Found a bug, a sensor that behaves oddly, or a claim you think we should fix? Write to us at [email protected] or use the contact page — accuracy reports with a measured distance and a repeatable result are the most useful mail we get.