Mark a distance
Use 2 inches or about 5 centimeters. A longer, verified distance improves accuracy.
Browser-based · private · free
Mouse DPI Checker & Sensitivity Test
Measure effective DPI—not a guessed hardware setting.
Measure your current effective mouse DPI with a known physical distance. Run one quick check or compare five passes to see the average, deviation, and axis drift.
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 TOOLS
Continue with the right mouse test
This page estimates DPI from physical travel. Use the mouse checker for buttons, scrolling, and movement events; use the drag test when a held click releases early; use the converter only after you know the DPI setting you want to keep or change.
KEEP 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 DPI checker 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 DPI checker FAQ
Can an online mouse DPI checker read hardware DPI directly?+
No browser can read every mouse sensor profile directly. This tool estimates effective DPI by comparing reported movement with a physical distance you measure. Your mouse software remains the best source for the configured hardware profile.
How do I check my mouse DPI accurately?+
Set browser zoom to 100%, mark a verified distance beside the mouse, turn pointer acceleration off when possible, and move in a straight line. Use five runs and trust a tight cluster more than one round-looking result.
Why is my measured DPI different from the mouse software?+
Browser zoom, display scaling, operating-system pointer speed, acceleration, a short path, and hand measurement error can all change the estimate. A small difference does not by itself mean the sensor or software is wrong.
Is mouse sensitivity the same as DPI?+
No. DPI describes how much movement the mouse reports per physical inch. Operating-system or in-game sensitivity applies another multiplier. In one game, eDPI is commonly calculated as mouse DPI multiplied by the in-game sensitivity value.
Do I need a physical ruler for a mouse DPI test?+
You need a reliable real-world distance. A ruler is easiest, but a standard bank card, a known paper size, or the calibrated phone ruler can help mark a distance. Without a physical reference, absolute DPI cannot be estimated reliably.
Why should I repeat the mouse DPI test five times?+
A physical ruler test includes small hand and alignment errors. Repeated runs show whether the estimate is stable. The average, deviation, and cross-axis drift are more informative than a single result.
Does the 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