Mark a distance
Use 2 inches or about 5 centimeters. A longer, verified distance improves accuracy.
Browser-based · private · free
Mouse Sensitivity Test & DPI Analyzer
Know what DPI setting your mouse is actually using.
Find your current effective mouse DPI in about two minutes. Move your mouse over a known physical distance, then compare five runs for a result you can trust.
YOU NEED Desktop + physical mouse Ruler or another known-length reference
No download No sign-up Data stays local
01 · THE ANALYZER
Measure your current effective DPI
Mark a real distance, move your mouse from start to finish, and let the analyzer compare five runs. Nothing is uploaded.
Start at zero
Put the mouse at your first mark, then select Start run. Allow pointer lock if asked.
Move, click, repeat
Move exactly to the end mark, click or press Space, return to zero, and repeat five times.
RUN 1 / 5Put your mouse at the start mark
Put your mouse at the start mark, then choose Start run 1.
PRIMARY 0 pxCROSS-AXIS 0 pxCAPTURE READY
READ THE RESULT
The average is your estimate. The spread tells you whether to trust it.
- Average DPI
- Your main effective DPI estimate across saved runs.
- Likely step
- The nearest common 50-DPI setting, such as 800 or 1600.
- Deviation
- Lower is better. Under 5% means the runs are reasonably consistent.
- Confidence
- High or Good means both repeatability and straight-line movement were strong.
02 · RELATED TOOL
Sensitivity Converter & DPI Converter
Changing from 800 DPI to 1600 DPI should not force you to guess a new in-game setting. Preserve the same eDPI with a transparent formula, then return here to verify the new hardware DPI.
Convert DPI settingsKEEP THE SAME eDPI800 DPI × 1.0=1600 DPI × 0.5
03 · THE METHOD
How to check mouse DPI accurately
Three deliberate steps are more useful than a result that only looks precise.
Mark a real distance
Use a ruler or another verified length beside your mouse. Two inches or five centimeters is an easy starting point; longer distances reduce hand error.
Move in one straight line
Start the run, move exactly to your ruler mark, then click. Cross-axis movement is recorded so diagonal drift stays visible.
Repeat, then compare
Five runs produce an average, deviation score, likely 50-DPI step, and a confidence label you can actually interpret.
THE FORMULA
movement counts÷physical inches=effective DPI
04 · KNOW THE LIMITS
What this mouse sensitivity test actually measures
An honest DPI estimate beats a fake exact number. A website cannot inspect every mouse sensor profile directly. It can measure movement reported by your browser and compare it with a known physical distance. That makes this an effective DPI estimate—not laboratory certification.
Repeatability firstTrust a tight cluster of readings more than one round-looking result.
Axis drift exposedDiagonal movement is measured instead of hidden from the score.
Nearest common stepValues around 790–815 usually point to an 800 DPI setting.
COMMON SOURCES OF ERROR
- 01
Pointer acceleration changes reported movement based on speed.
- 02
Browser zoom and display scaling can affect non-raw measurements.
- 03
A short or diagonal path magnifies physical measurement error.
- 04
Screen edges can stop a fallback measurement without pointer lock.
05 · READ YOUR RESULT
What your mouse DPI means
These are practical starting ranges, not competitive rules. Pair hardware DPI with in-game sensitivity for a complete picture.
DPI RANGECOMMON USEFEEL
400–800Tactical FPS · precision workControlled
800–1600Balanced gaming · everyday workVersatile
1600–3200Large displays · limited desk spaceFast
3200+Specialized setups · low software sensitivityVery fast
06 · QUESTIONS
Mouse sensitivity test FAQ
What does this mouse sensitivity test measure?+
It estimates effective mouse DPI by comparing the movement reported by your browser with a physical distance measured on your desk. It does not score aim skill or read in-game sensitivity settings.
Can a website detect my exact hardware DPI?+
Not directly on every device. The browser reports movement values; this tool compares those values with the real distance you enter. Raw pointer lock can reduce operating-system adjustment in supported browsers, but manufacturer software remains the source of truth for the configured sensor profile.
Do I need a physical ruler to test mouse DPI?+
You need a reliable real-world distance, but it does not have to come from a ruler. A verified ruler is easiest; a standard bank card or a known paper size can also help you mark a distance. Without any physical reference, a browser can compare movement consistency but cannot calculate trustworthy absolute DPI.
Why should I run the mouse DPI test five times?+
A ruler test includes small physical errors. Repeating it reveals whether the result is stable. The average, percentage deviation, and axis drift together are much more useful than a single measurement.
Should I turn off Enhance Pointer Precision?+
Yes, especially if raw movement is unavailable. Pointer acceleration changes the distance reported according to movement speed, which can make one run differ sharply from the next.
What is the difference between DPI, CPI, sensitivity, and eDPI?+
CPI is the technically precise sensor term, while DPI is the familiar consumer term. In-game sensitivity is a software multiplier. eDPI usually means mouse DPI multiplied by in-game sensitivity for comparisons inside the same game.
Does this mouse DPI checker upload movement data?+
No. Measurement and statistics run locally in your browser tab. There is no account, mouse model lookup, or movement upload.
READY WHEN YOU AREMark a real distance.
Run the test