Understanding Mouse DPI vs eDPI
DPI (Dots Per Inch) is a hardware specification of optical mouse sensors (PixArt, Hero, Focus+).
Calculate true mouse DPI and sensitivity accuracy online. Measure physical mouse movement against pixel travel free.
Move mouse horizontally across a physical ruler by your selected target distance.
Most competitive esports players use 400, 800, or 1600 DPI combined with low in-game sensitivity for optimal pixel precision.
Step-by-step tutorial to calibrate or repair your controller.
View Repair GuidesGet optimal deadzone & sensitivity settings for Apex, COD, Fortnite.
Optimize SettingsCompare replacement controllers with hall-effect anti-drift sticks.
Compare ModelsDPI (Dots Per Inch) is a hardware specification of optical mouse sensors (PixArt, Hero, Focus+).
Select your ruler distance (e.g. 2 inches) above, place your mouse at the 0-mark on a physical ruler, and drag horizontally across the ruler distance while holding left click.
DPI measures how many pixels your cursor moves on screen per physical inch of mouse movement. 800 DPI moves 800 pixels per inch; 1600 DPI moves 1600 pixels per inch.
eDPI (Effective DPI) is calculated by multiplying your mouse DPI by your in-game sensitivity (eDPI = Mouse DPI × In-Game Sensitivity).
All Gamepad API data stays in your browser. Zero tracking or data collection.
No downloads, plugins, or software installation needed. Works instantly.
No paywalls, subscription requirements, or hidden usage limits.