Engineering calibration tools for serious players.
We build browser-native, zero-driver hardware measurement protocols to give gamers, designers, and competitive esports athletes absolute confidence in their input devices.
Our Mission
For decades, peripheral manufacturers have printed CPI / DPI specifications on boxes without accounting for real-world variance. Lens mounting tolerances, skate thickness, and pad friction introduce up to 5% deviation in raw tracking output.
Check Mouse DPI was founded to provide an open, transparent, and mathematically rigorous testing suite that anyone with a simple desk ruler can use in under 30 seconds.
What We Offer
eDPI Calculator
Calculate effective sensitivity and cm/360° for competitive gaming titles.
Calculate eDPI →Zero-Telemetry Privacy First
Unlike desktop vendor software that requires resident background bloatware and continuous network telemetry, Vector executes 100% of motion vector mathematics locally in your browser's JavaScript sandbox. No coordinates, cursor positions, or hardware identifiers ever leave your machine.
Read our complete Privacy Policy and Cookies Policy for full data practices.