Mouse DPI Analyzer
Measure your mouse's real DPI by moving it a known distance — and see if it matches the setting.
Tip: line the mouse up against a ruler, or move it the full width of your mousepad and enter that width. A longer distance is much more forgiving — small errors matter less.
This is an estimate, not a lab reading — browsers only see cursor pixels, which mouse acceleration distorts. Turn off "Enhance pointer precision" on Windows, keep pointer speed at the default middle notch, and sweep once in a straight line for the closest result. Run it a couple of times and average.
A DPI analyzer estimates your mouse's true DPI (dots per inch) by measuring how far the cursor travels when you move the mouse a set physical distance. It's a quick way to check whether your mouse's real DPI matches its advertised setting — no download required.
How the measurement works
When you start, the tool locks your cursor and counts every pixel of movement your mouse reports. You slide the mouse a known distance — measured on your desk or a ruler — and DPI is simply the pixels counted divided by the inches moved. A pointer lock is used so hitting the edge of your screen never interrupts the count.
Getting an accurate reading
Because browsers only see cursor pixels, mouse acceleration will skew the result. Turn off "Enhance pointer precision" on Windows, keep your pointer speed at the default middle setting, and move slowly in one straight sweep. Then match your feel across games with the sensitivity converter.
Frequently asked questions
How do I measure my mouse DPI?
Set the distance you're going to move the mouse (say 5cm), click the pad to lock your cursor, then physically slide your mouse that exact distance across your desk in one straight motion and click to finish. The tool counts the pixels travelled and divides by the distance to estimate your DPI.
How accurate is an online DPI test?
It's an estimate, not a lab measurement. Browsers report cursor movement in pixels, which is affected by your operating system's pointer speed and acceleration. For the closest result, turn off mouse acceleration ('Enhance pointer precision' on Windows), keep pointer speed at the default middle notch, and move the mouse slowly and straight.
What is DPI on a mouse?
DPI (dots per inch), sometimes called CPI, is how many steps your mouse reports for one inch of physical movement. Higher DPI moves the cursor further for the same hand motion. It's a hardware setting — what actually matters in games is your effective sensitivity (eDPI) and your cm/360.
My measured DPI doesn't match my setting — why?
A small difference is normal and usually down to pointer acceleration or an imperfect hand movement. A large gap can mean acceleration is on, your DPI switch is set differently than you think, or the mouse interpolates DPI in software. Disable acceleration and try again with a slow, straight sweep.
What DPI should I use for gaming?
Most players game between 400 and 1600 DPI and adjust in-game sensitivity from there. The DPI number itself matters far less than your cm/360 — the physical distance to turn 360°. Dial that in with our sensitivity converter so it feels the same across every game.