Gaming

Mouse DPI Analyzer

Measure your mouse's true DPI by dragging a slider.

Measure your mouse's true DPI

Manufacturer DPI is often off by a few percent. This finds the real value using a known physical distance.

1. Set your DPI in your mouse software to a single, known value (e.g. 800). Disable Windows pointer acceleration.
2. Place a ruler under your mouse. Mark the start position.
3. Move the mouse exactly the distance you set below, then enter the pixel count Windows registered.

Claimed DPI

Distance moved (cm)

Counts (px) registered

True DPI

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Error vs claimed

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Why your mouse's "real" DPI matters

Manufacturer DPI specs are usually within 1-3% of the truth, but some mice have larger discrepancies — especially at non-native steps (e.g. 750 DPI on a sensor whose native ladder is 100/200/400/800). If you're trying to match a pro player's exact sens, an unverified DPI can throw your aim off without you knowing why.

The fix: measure your true DPI once, write it down, and use that number when you read sens guides or use our converters.

How to measure pixel count

Open DPI Analyzer in this browser.
Set your "Target distance" to 10 cm (or whatever you'll measure with the ruler).
Click "Reset", then drag the mouse exactly across that 10 cm.
The pixel count shown is what you enter above.

FAQ

My DPI is off by 2-5%. Is that bad?

Functionally fine for most players. It only matters if you're copying a pro's exact sens to the third decimal — at that point, compensate the in-game sens by the same percentage.

My DPI is off by 10%+. What's wrong?

Likely Windows pointer acceleration or a non-1.0 multiplier. Set Windows pointer to 6/11, disable "Enhance pointer precision", re-test. If still off, your mouse may be interpolating between native sensor steps — pick a native step (400/800/1600).