A quick ruler-guided check
Check your mouse DPI
Choose a distance. Hold, move, release. See your estimate.
START
0
5 cm
0
Move right →
FINISH5 cm
Mark this distance on your desk. This diagram is not to scale.
2 Hold, move, release
Precision inputPlace your mouse at the start mark. Hold the left button in the blue area. When Measuring appears, move right by 5 cm, then release.
Hold here to start →Wait for Measuring, then move 5 cm and release.Keep moving to your physical end mark.
Prefer clicks? Use Start test, then click once to finish. Your cursor hides while testing. Escape cancels.
Loading analyzer…
Your estimated DPI—Complete a stroke to see your result
Movement recorded0Browser movement units
Difference from your setting—Comparison, not an accuracy grade
Browser estimate. Use a physical mouse and ruler. Repeat three times to compare. What affects this result?
Run history & repeatability 0 runs
Compare your runs
Median estimate—
Mean estimate—
Run range—
Repeatability spread (CV)—
Complete three runs with the same settings. Repeatability describes consistency, not hardware accuracy.
| Run | Estimate | Distance / direction | Input | Notes | Action |
|---|---|---|---|---|---|
| No measurements yet. Results stay in this tab until you clear or reload it. | |||||
The summary uses the newest matching group: same input mode, horizontal/vertical axis, distance, configured DPI and display conditions. Other runs remain in the table. Changing your mouse profile or OS settings? Clear history first.
Measurement tips & limitations
- Use an external mouse and a real ruler. Touchscreens and touchpads are unsuitable.
- Measure travel of the same point on the mouse. Move steadily in one direction; do not lift, rotate or return the mouse before finishing.
- Keep your mouse profile, surface, speed and browser zoom fixed. For standard or drag input, disable pointer acceleration and use your normal default pointer speed. Start at 100% browser zoom.
Estimate = net movement along the selected axis ÷ physical travel in inches. Sideways drift and return movement are not added to inflate the result. Interrupted, screen-clipped or substantially reversed strokes are discarded.
Precision input requests unadjustedMovement. An accepted modern API request is labeled separately from standard or unconfirmed legacy lock. It does not read your firmware or certify sensor accuracy. Simple drag uses CSS coordinates and is affected by pointer settings, zoom and display scaling. We do not apply an assumed device-pixel-ratio correction.
A difference from your mouse utility is not a sensor fault or an accuracy score. The ruler distance and your hand movement remain sources of error in every mode. These results cannot diagnose sensor health, angle snapping, lift-off distance or USB polling rate. Prefer configured DPI for gaming calculations unless you have established a reliable measurement.
Measurement samples are processed in this tab, without storage or uploads by this analyzer. CSV is generated only when you click Export. The website's normal ads, consent and analytics are governed by its privacy policy.
Compare sensitivity in the same game
eDPI combines your mouse DPI and your in-game sensitivity. Compare it only within the same game and sensitivity mode.
Use the sensitivity value displayed by your game. Games use different scales; equal eDPI does not mean equal aim across games.
eDPI = mouse DPI × sensitivity
800 DPI × 1.5 sensitivity
400 DPI × 3 and 800 DPI × 1.5 both give 1,200 eDPI within the same game.
Open the full eDPI calculator →Change mouse DPI, preserve the sensitivity product
For the same game and sensitivity mode, choose a new mouse DPI and calculate the matching sensitivity.
Matching new sensitivity
(800 × 1.5) ÷ 1,600
Apply your new DPI in the mouse utility, then enter this sensitivity in the same game and test the feel. Rounding, acceleration, ADS and separate sensitivity multipliers can change the result.
This does not convert between different games. A cross-game conversion needs the game's input scale and other settings.
Mouse DPI tester guide
How to run an accurate mouse DPI test online
Use this DPI tester to check real mouse DPI, compare it with your configured DPI, and decide whether your mouse sensitivity or eDPI needs adjustment for gaming, office work, or high-resolution screens.
Mouse DPI test
DPI checker
Mouse DPI analyzer
eDPI calculator
Mouse accuracy test
Input latency test
Quick DPI ranges: competitive FPS players often use 400-800 DPI, everyday work commonly feels comfortable around 800-1600 DPI, and 4K or multi-monitor setups may need 1600-2400 DPI. The best setting is the one you can repeat accurately.
If the same DPI feels different: read the same-DPI sensitivity troubleshooting guide after measuring. It explains how real DPI variance, Windows pointer speed, raw input, eDPI, polling rate, mousepad friction, and grip can change the feel.
If you are changing DPI on purpose: use the DPI conversion workflow for keeping aim consistent before you move the game sensitivity slider.
Want the sensor background? The ball, optical, and laser mouse explainer shows how the sensor produces the counts that this DPI tester measures.
Buying a travel mouse: the Dell MS700 Bluetooth travel mouse comparison explains why advertised DPI ranges still need a quick real-world DPI check after pairing.
Once the DPI number is confirmed: see what a good ms-per-target score looks like — the benchmark table gives average, good and elite time-per-target bands with the matching hit-% and pixel-error figures at 800 DPI, so you can tell whether the setting you just measured is actually working.
DPI test FAQ
Common mouse DPI checker questions
