Mouse DPI Analyzer
Measure with a mouse and ruler. Repeat three times to compare your DPI.
This test needs a physical mouse, ruler and desktop browser. On a phone, use the eDPI calculator or read the setup guide.
Hold here and move to your ruler mark
The trace is not a distance meter · Your physical ruler sets the distance
Use the same mouse edge at both ruler marks.
Complete three ruler swipes with the same mouse profile, distance and surface.
Compare configured DPI & inspect saved runs
Compare with the setting in your mouse software.
Three runs with the same setup produce a median.
Start a new group after changing mouse, DPI profile, surface or pointer settings. Previous saved runs are not added to a new group.
Last three saved runs
No saved runs yet. History stays in this browser.
See the ruler setupTest not starting or reading looks wrong?
How to Test Mouse DPI in 3 Simple Steps
Measure the desk—not the screen—then compare three like-for-like runs.
Use one mouse edge as your reference.
Place that edge at zero, hold inside the test area, and stop when the same edge reaches the end mark. Your ruler determines the distance; the screen does not.
See the complete measurement guide →1. Set the distanceAlign at zero
Align the mouse with the ruler's zero mark and enter the distance you will move.
2. Hold & moveFollow the ruler
Click and hold the measurement area, then slide the mouse straight to the physical end mark.
3. Release & compareCompare the estimate
Release at the end mark. Repeat twice more and use the median reading for comparison.
What Your Mouse DPI Result Means
One reading is a useful estimate. Three comparable runs give you a more stable number to compare with the DPI configured in your mouse software.
Compare the middle reading, not the highest one.
A small difference can come from the start point, stopping point, path, surface, or browser input handling. Keep the setup identical and use the median of three runs.
- Same distance and unit
- Same surface and direction
- Same mouse DPI profile
Got Questions? Here Are the Facts
Clear answers about measuring mouse DPI in a browser and interpreting the result.
How do I find my current mouse DPI?
Check the active DPI profile in your mouse software, such as Logitech G HUB or Razer Synapse. A website cannot read that stored setting. If the software is unavailable, use a ruler-based test to estimate DPI; Windows pointer speed and macOS tracking speed are not hardware DPI readouts. See how to find your DPI setting or test without software.
What is a mouse DPI analyzer?
A mouse DPI analyzer divides net browser-reported movement by a known physical distance to estimate DPI. It is useful for comparing repeated runs with a configured DPI setting, but the result is affected by the surface, the way you move, and the browser's input implementation.
How does this online DPI analyzer estimate mouse DPI without installing software?
The tool uses the browser's Pointer Lock API to read relative movement while you hold the measurement area. It uses DPI = net browser movement ÷ distance in inches. Horizontal and vertical modes use the selected axis; Free angle uses straight-line displacement. This avoids screen-edge limits, but it does not bypass every operating-system or browser input transformation.
Why can my measured DPI differ from the number on the box?
Configured DPI is a nominal setting. A reading can differ because of physical distance error, hand angle, surface and skate conditions, operating-system settings, or browser input handling. Repeat the test consistently, then read the DPI deviation guide for the formula and limits.
Can I test mouse DPI on a phone, touchscreen, or trackpad?
No. Touchscreens and trackpads do not provide a meaningful physical mouse-distance test. Use a physical mouse, a ruler, and a desktop browser that supports Pointer Lock. If Pointer Lock is blocked, the tool will show a retry message.
How many times should I run the mouse DPI test?
Run at least three passes with the same distance, surface, and direction. Small differences are expected from the start position, stop position, and movement path. Use the median result instead of choosing the highest reading.
Does monitor resolution change a mouse DPI measurement?
Monitor resolution is not an input in the DPI formula, which divides browser-reported movement by physical distance in inches. Browser and operating-system input handling can still affect the reported movement, so compare repeated runs rather than relying on one result.