Mouse DPI Analyzer

How to use it: choose a distance, put a ruler next to your mouse, then hold the left button in the box, move exactly that far to the right and release. Do it 3 times for an average.

This free mouse DPI analyzer estimates the real DPI of your mouse. DPI (dots per inch), also called CPI (counts per inch), is how many movement counts your mouse sends for every inch it moves. A higher DPI moves the cursor further for the same hand movement. Mouse software often shows a DPI setting, but the real value can differ, and many basic mice do not show it at all. This tool lets you measure it with a ruler and your browser.

How to measure your mouse DPI

  1. Choose a distance: 1, 2 or 3 inches, or 5 or 10 centimeters. Longer distances give more accurate results.
  2. Put a ruler or tape measure flat on your desk next to your mouse.
  3. Line up the edge of your mouse with the start of the ruler.
  4. Press and hold the left mouse button inside the box.
  5. Move the mouse exactly the chosen distance to the right, in a straight line.
  6. Release the button. Your estimate appears straight away.
  7. Lift the mouse back to the start and repeat. After 3 tries you get an average.

Start with your cursor near the left side of the box so it does not reach the edge of your screen before you finish moving.

Settings you need for an accurate result

The analyzer measures how far your cursor moves on screen. Your operating system can change that distance, so check these settings first:

  • Windows: in Mouse settings, set the pointer speed to the middle (6 of 11) and turn off Enhance pointer precision. Both change how far the cursor moves.
  • macOS: macOS always adds some pointer acceleration, so results on a Mac are rougher. Move at a steady, medium speed for the most consistent reading.
  • Mouse software: make sure you are on the DPI profile you want to measure.

With these settings, one count from your mouse moves the cursor by one screen pixel, which is what the analyzer relies on. If your settings are different, the result shows your effective DPI, which is still useful for comparing mice or settings on the same computer.

Why is my result not exactly my DPI setting?

Small errors come from where you start and stop against the ruler, and from moving slightly up or down instead of straight across. Mouse sensors themselves also vary a little from the number on the box. Results within about 5 to 10 percent of your setting mean the mouse is working as expected. Averaging 3 tries and using a longer distance both help.

What DPI should I use?

There is no single best DPI. What matters is how far the cursor or in-game camera moves for your hand movement, which depends on DPI and in-game sensitivity together.

  • Office and everyday use: 800 to 1600 DPI suits most screens.
  • FPS games: many competitive players use 400 or 800 DPI with a low in-game sensitivity for precise aim.
  • High resolution or large screens: a higher DPI can help you cross the screen without large arm movements.

If you are unsure, pick a DPI where you can reach both sides of your screen comfortably without lifting the mouse, then fine-tune your in-game sensitivity.

After measuring your DPI, check your mouse polling rate, make sure every button works with the Mouse Test, and practice your aim with the Aim Trainer.

Frequently asked questions

Is DPI the same as CPI?

For mice, yes. DPI is the more common name, but CPI (counts per inch) is technically more accurate because a mouse sends counts rather than dots.

Can I measure DPI on a laptop touchpad?

No. Touchpads do not have a DPI setting in the same way, so the analyzer needs a mouse.

Why do my 3 results differ?

Each try has small errors in distance and direction. Averaging several tries smooths these out. If one try is far off the others, press Reset and measure again.

Does screen resolution affect the result?

The analyzer accounts for your screen’s pixel density automatically. The operating system pointer settings described above matter much more.

Does this change my mouse settings?

No. The analyzer only reads cursor movement in your browser. It cannot change any setting on your mouse or computer.