Mouse — Tests & Tools

Test your mouse's polling rate in hertz — how often it reports its position to your computer — with a live meter showing your current, peak, and average rate.

Check that every button and the scroll wheel on your mouse works. Click left, right, middle, and side buttons to see them light up on a mouse diagram, scroll up and down to test the wheel, and catch double-click misfires from a worn switch.

Diagnose scroll wheel jitter, reverse scrolling, and skipping. Scroll one direction for a timed run and get your scroll speed, up/down counts, reverse-jitter detection, and a wheel-health verdict.

Measure your mouse's real DPI in the browser. Enter your configured DPI and a distance, slide your mouse that far along a ruler, and get your true DPI, the pixel counts, and the deviation from the box claim.

Test your mouse for double-click misfires from a worn switch — click and see the interval between clicks, with unintended double-clicks flagged and counted.

Test your mouse aim and precision — click targets as they appear and get your accuracy, average time to hit, and targets per second.

Test your mouse for drag interruptions — hold and drag across the pad and catch any button drops mid-drag from a failing switch, with the drag path drawn live.

Check your mouse for sensor drift and jitter — hold the mouse still and see whether the pointer reports movement it shouldn't, with any stray motion measured.

Measure your mouse and system input latency — react to an on-screen change and see the delay in milliseconds, averaged over several tries.

Measure your pointer speed and detect mouse acceleration — move the mouse and see whether the same physical motion travels different on-screen distances at different speeds.

Spin your mouse in circles and count full rotations and spin speed — the mouse spinner challenge, measured live.

Work out your effective sensitivity from your mouse DPI and in-game sensitivity — eDPI and cm/360 for consistent aim across setups.

Calculate your eDPI (effective DPI) from your mouse DPI and in-game sensitivity, and compare it across games and pro players.

Convert your mouse sensitivity between games — keep the same cm/360 from CS to Valorant, Apex, Fortnite, and more, using your DPI.

Calculate the optimal field of view for your monitor size, aspect ratio, and seating distance. Convert hFOV and vFOV, with game-specific values for FPS and sim racing.