Free tool
Mouse DPI Analyzer
Check your mouse's real DPI. Move it a measured distance across your desk, and the analyzer counts the raw movement your mouse reports.
| Run | Counts | Measured DPI |
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How to check your mouse DPI
- Put a ruler on your mousepad, or mark two points 10 cm (or 4 inches) apart.
- Line the front edge of your mouse up with the first mark.
- Press Start measuring. Your cursor locks and hides.
- Move the mouse slowly and straight to the right until it reaches the second mark, then click.
- Repeat two or three times. The average is your real DPI.
Your measured DPI is usually within a few percent of the advertised value. A bigger difference can come from mouse acceleration, the mouse's firmware, or the surface you're using.
Why your real DPI matters
Every sensitivity number, eDPI and cm/360 assumes your DPI is what you think it is. If your "800 DPI" mouse really sends 760, your sens in every game is 5% slower than you planned. Use your measured DPI in the sens converter, eDPI calculator and cm/360 calculator.
DPI analyzer FAQ
Is this accurate?
In browsers that support raw mouse input (such as Chrome and Edge on Windows) it ignores your pointer speed and acceleration, so it is as accurate as your measured distance. Otherwise your system pointer settings apply; the note under the tool tells you which mode you got.
What is the difference between DPI and CPI?
Nothing in practice. CPI (counts per inch) is the technically correct term, and DPI is the name most brands use.
Which DPI should I use for gaming?
400, 800 and 1600 are the most common. Higher DPI is not more accurate on its own; what matters is your eDPI or cm/360 in game.
Train at your new sens
Aim Trainer uses your exact game sensitivity for 14 aim drills, free in your browser.
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