Mouse DPI & Esports Sensitivity Calibration Tool
Calculate true mouse DPI and eDPI for CS2, Valorant, Overwatch, and Fortnite. Measure physical distance traveled against screen pixel deltas.
Universal Mouse Diagnostic Suite
Click any mouse button, scroll the wheel, or move inside the canvas to test hardware switches and polling stability.
No double-click chatter faults detected on mechanical switches.
Frequently Asked Questions (Mouse DPI & Esports Sensitivity Calibration Tool)
10-Item Technical FAQ & PointerEvent Telemetry Troubleshooting
What is mouse DPI (Dots Per Inch)?
DPI measures how many pixels your cursor moves across the screen for every inch of physical mouse displacement.
What is eDPI (Effective DPI)?
eDPI is your true in-game sensitivity calculated by multiplying physical mouse DPI by in-game sensitivity multiplier.
How do I calculate true mouse DPI online?
Move your mouse a known physical distance (e.g. 1 inch or 25.4mm); the tool divides total pixel displacement by target inches.
Why does my calculated DPI differ from manufacturer specs?
DPI variance occurs due to mouse pad surface texture, sensor height (LOD), or lens magnification tolerances.
Is higher DPI better for competitive gaming?
Higher DPI (e.g. 1600 DPI vs 400 DPI) reduces sensor input latency, provided in-game sensitivity is lowered proportionally to maintain eDPI.
What is CPI vs DPI?
CPI (Counts Per Inch) is the technically correct sensor term, while DPI (Dots Per Inch) is the common consumer term; both mean identical things.
How does screen resolution affect perceived mouse sensitivity?
Higher screen resolutions (4K vs 1080p) require more pixel distance, making the same DPI feel slower unless scaled.
What is mouse sensor acceleration?
Sensor acceleration increases cursor distance based on speed of movement rather than physical distance; disable Enhanced Pointer Precision in OS settings.
Can I convert sensitivity between CS2, Valorant, and Apex Legends?
Yes, eDPI allows direct 1:1 sensitivity mapping across tactical esports shooters.
How do I save my mouse DPI calibration report?
Click 'Export Passport' to save your verified DPI calibration settings in a JSON certificate.