Precision Mouse Calibration Tools for Every Desk Setup.
Check Mouse DPI is an open, browser-native suite of hardware testing utilities, eDPI calculators, and OS sensitivity configurators built for gamers, esports players, and PC enthusiasts.
Our Purpose
Mouse sensitivity settings and factory DPI ratings printed on packaging often differ from actual hardware performance. Differences in optical sensors, mousepad textures, skate friction, and operating system acceleration can lead to noticeable tracking discrepancies.
We built Check Mouse DPI to give everyone a free, transparent, and mathematically reliable way to measure their true hardware DPI using just a desk ruler — no software installation, background services, or account creation required.
What We Offer
Interactive Mouse DPI Tester
Measure your real DPI / CPI by moving your mouse a known physical distance (cm or inches) across your mousepad.
Test DPI →Esports eDPI Calculator
Convert sensitivity and calculate physical cm/360° turn distance across Valorant, CS2, Apex Legends, Overwatch 2, and Fortnite.
Calculate eDPI →OS Calibration & Command Guides
Step-by-step guides and calculators for Windows pointer speed, macOS tracking curves, and Linux xinput/libinput configurations.
View Guides →Zero-Telemetry & Client-Side Privacy
Your privacy is fundamental. All cursor coordinates, motion deltas, and sensitivity calculations execute strictly inside your web browser's JavaScript sandbox. No pointer movement data or hardware identifiers are ever sent to remote servers.
Read our complete Privacy Policy and Cookies Policy for full data practices.