Welcome to Mouse DPI Test — Gamepad Tester
Free Online Tool

Mouse DPI Test — Free Online Mouse DPI Tester

Mouse DPI Checker and Analyzer — Calculate Your Actual Mouse DPI and Sensitivity Accuracy Free Online, No Download Required, Works on Windows, Mac and Linux

Measure your mouse's actual DPI accurately in your browser using a physical ruler. Move your mouse a known distance, enter the measurement, and the tool calculates your true DPI from the raw pixel count. Works with any mouse — gaming, office, wireless, or wired — on any operating system without any software installation.

Live Pixel Count Any Mouse Windows macOS Linux Gaming Mouse eDPI Calculator No Download
Live DPI Preview
Move mouse here
Move mouse over this area
X Pixels
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Y Pixels
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Speed px/s
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Total px
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Use the full DPI test below for accurate results
What Is Mouse DPI

What Is Mouse DPI

DPI stands for Dots Per Inch. It measures how many pixels your cursor moves on screen for every inch your mouse moves physically. A mouse set to 800 DPI moves the cursor 800 pixels per inch of physical movement. A mouse at 1600 DPI moves the cursor 1600 pixels for the same physical distance, making it twice as fast. DPI is the single most important sensitivity setting on any mouse.

Why Your Actual DPI May Differ

Mouse manufacturers advertise DPI ratings that are often rounded or approximate. The actual DPI your sensor produces can differ by 5 to 15 percent from the advertised value due to sensor calibration tolerances, firmware rounding, and surface variation. Windows pointer speed and acceleration settings add further multipliers. Testing your true DPI reveals the actual sensitivity your hand experiences, not the theoretical spec.

How the DPI Test Works

The test captures raw pointer movement data from your browser as you move the mouse a known physical distance. Dividing the pixel count by the physical distance in inches gives your actual DPI. The formula is simple: DPI = pixels moved / inches moved. Using a real ruler on your desk for the physical measurement makes this method as accurate as professional sensor testing equipment.

Mouse DPI Test Tool
Mouse DPI Tester and Calculator
Ready to measure
Target Distance (physical movement)
Use a ruler or measuring tape on your mousepad for the most accurate result. Longer distances give better accuracy.
Your Configured DPI (optional)
Enter the DPI shown in your mouse software. Leave as-is if unknown. Used to calculate deviation percentage.
Axis to Test
Step 1 of 3 — Place your physical ruler on your mousepad and set the target distance above
Step 2 — Click Start, then move your mouse exactly the target distance
Click START then move mouse here
Step 3 — Click Stop when you have moved the exact distance
Pixels captured: 0
Runs: 0
Results
Measured DPI
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Actual sensor DPI
Deviation
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vs configured DPI
Pixels Moved
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Raw count this run
Measurement History
Run Distance Pixels Measured DPI Deviation Axis
No measurements yet. Run the test above.
Tip for accurate results: Set Windows pointer speed to 6/11 (the default center position) and disable pointer acceleration (Enhance Pointer Precision) in Mouse settings before testing. Use a distance of 10cm or more. Run 3 to 5 times and average the results for the most reliable DPI reading.
eDPI Calculator
eDPI Calculator — Effective DPI
eDPI (effective DPI) combines your mouse DPI with your in-game sensitivity to give a single number that describes how your aim actually feels in any game. Lower eDPI means slower, more precise aim. Higher eDPI means faster movement. Pro FPS players typically use 200 to 600 eDPI.
Mouse DPI
In-Game Sensitivity
eDPI Result
400
FPS Games
200 to 800 eDPI recommended
MOBA / RTS
800 to 2000 eDPI recommended
Design / CAD
400 to 1200 eDPI recommended
DPI Settings by Use Case

What DPI Should You Use — By Use Case

There is no single best DPI. The optimal setting depends entirely on what you are using your mouse for and your personal movement style.

FPS Gaming

Best DPI for FPS Games

First-person shooter games like CS2, Valorant, and Apex Legends demand maximum precision for small target acquisition and flick shots. Most professional FPS players use very low DPI combined with high in-game sensitivity to maintain large, sweeping movements for full accuracy. Lower DPI reduces jitter from minor hand tremors and allows more precise micro-adjustments.

400 to 800 DPI recommended
MOBA and RTS

Best DPI for MOBA and RTS Games

Multiplayer online battle arena games like League of Legends and Dota 2 require frequent fast cursor movements across a large map view. RTS games require clicking units at speed. A higher DPI reduces the physical distance needed to traverse the screen, reducing wrist fatigue in long sessions. Precision matters less than speed for most MOBA actions.

800 to 1600 DPI recommended
Graphic Design

Best DPI for Graphic Design and Photo Editing

Graphic designers, illustrators, and photo editors need precise cursor control for pixel-level adjustments, smooth brush strokes, and fine selections. A DPI that is too high causes jittery, overshooting movements when working at high zoom levels. Lower DPI provides more physical control per pixel, making detailed editing work significantly more comfortable and accurate.

400 to 1000 DPI recommended
Everyday Use

Best DPI for Office and Everyday Use

For general productivity work including web browsing, document editing, and multitasking across multiple monitors, a moderate DPI provides a comfortable balance between cursor speed and control. High-resolution displays and multi-monitor setups benefit from slightly higher DPI to reduce the physical effort of navigating across large screen areas. Most office users are satisfied with 1000 to 1600 DPI.

800 to 1600 DPI recommended
How to Test Mouse DPI

How to Use the Mouse DPI Tester

An accurate DPI measurement requires a physical ruler and takes about two minutes. Follow these steps for reliable results.

1

Prepare Your Setup

Place a ruler or measuring tape on your mousepad next to where you will move your mouse. Set your Windows pointer speed to 6/11 (the default center position) and disable Enhance Pointer Precision in Mouse settings under Control Panel. These settings ensure the browser receives raw pixel counts without OS-level multipliers distorting the result. On macOS, set Tracking Speed to a known value and note it for reference.

Windows 6/11 pointer speedDisable accelerationReal ruler on mousepad
2

Configure the Test

Enter the physical distance you will move your mouse in the Target Distance field above. A distance of 10cm or more gives better accuracy than short distances because small errors in the physical measurement have less impact on the final result. Enter your configured DPI from your mouse software or driver if you know it — this is used only to calculate the deviation percentage and does not affect the measurement itself.

10cm or more for accuracyEnter configured DPIChoose X or Y axis
3

Run the Measurement

Click Start Test and move your mouse in a straight line along the ruler for exactly the target distance, then click Stop. The tool counts every pixel your cursor moved during that physical distance. Move as steadily as possible — lifting the mouse or changing direction adds noise to the pixel count. The test zone highlights red during the active measurement to show it is capturing data.

Straight line movementDo not lift mouseClick Stop at end point
4

Repeat and Average

Run the test three to five times and compare the results in the measurement history table. Small variations between runs are normal and caused by minor inconsistencies in your physical movement. The average of multiple runs gives a more reliable DPI figure than a single measurement. If results vary by more than 5 percent, check that pointer acceleration is fully disabled and that your ruler measurement is consistent.

3 to 5 runsAverage the results5% variation is normal
Why Choose This Tool

Why Use Gamepad Tester for Mouse DPI Testing

Accurate, private, and instant — no software, no installation, and no data collection.

Instant, No Install

Open your browser on Windows, Mac, or Linux and measure your DPI in seconds. No app, no driver software, no extension, no account. Works on any device with a modern browser and a connected mouse.

100% Private

All mouse movement data is processed entirely in your browser. No pixel counts, DPI readings, or movement data are ever transmitted to any server. Your mouse data never leaves your computer.

Measurement History

Every run is saved in the history table so you can compare multiple measurements across different distances and axes. Average your results to get a highly accurate final DPI figure with visible deviation from your configured setting.

Deviation Calculation

The tool compares your measured DPI against your configured DPI and shows the exact percentage deviation. A deviation above 10 percent indicates your sensor is not performing to spec and your in-game sensitivity may need adjustment to compensate.

eDPI Calculator Included

The built-in eDPI calculator combines your measured DPI with your in-game sensitivity to give you your effective DPI. Compare your eDPI against professional gamer benchmarks to optimise your setup for competitive gaming.

Works with Any Mouse

Gaming mice, office mice, wireless mice, trackballs, laptop trackpads — any pointing device your OS recognises is compatible. No brand-specific software or proprietary API is required. If the browser sees your mouse, the DPI tester reads it.

Frequently Asked Questions

Mouse DPI Test FAQs

What is mouse DPI and why does it matter?
DPI stands for Dots Per Inch. It measures how many screen pixels your cursor moves for every inch of physical mouse movement. A mouse set to 800 DPI moves the cursor 800 pixels for each inch you move it. A mouse at 1600 DPI moves the cursor 1600 pixels for the same physical distance, making it twice as responsive. DPI matters because it directly controls how fast and precisely your cursor moves. The right DPI setting depends on your monitor resolution, your desk space, your task, and your personal preference. Testing your actual DPI confirms your sensor is delivering the sensitivity your muscle memory expects.
How do I test my mouse DPI online without software?
Place a ruler on your mousepad and note a target distance — 10cm or more works best. Set Windows pointer speed to 6/11 and disable Enhance Pointer Precision in Mouse settings. Open this DPI tester in Chrome or Edge, enter your target distance, click Start Test, move your mouse exactly that distance along the ruler, then click Stop. The tool counts the raw pixel movement and divides by your physical distance in inches to calculate your actual DPI. No software download or installation is needed at any point. Run the test three to five times and average the results for a more reliable figure.
Why does my measured DPI differ from the advertised DPI?
Mouse manufacturers round their DPI specifications and sensor calibration tolerances mean the actual value can vary by 5 to 15 percent from the advertised figure. Additionally, Windows pointer speed settings act as a multiplier on top of the raw sensor output — a pointer speed setting above or below 6/11 adds a scaling factor that changes the effective DPI the browser sees. Pointer acceleration (Enhance Pointer Precision) makes the cursor move faster or slower depending on movement speed, which completely invalidates any fixed DPI measurement. To get the true sensor DPI, always disable acceleration and set pointer speed to 6/11 before testing.
What is eDPI and how do I calculate it?
eDPI stands for effective DPI. It is calculated by multiplying your mouse DPI by your in-game sensitivity setting. For example, a mouse at 800 DPI with an in-game sensitivity of 0.5 gives an eDPI of 400. eDPI is a universal sensitivity metric that lets you compare your setup to other players regardless of what DPI or sensitivity they individually use. Two players with the same eDPI will experience identical aim speed even if they use completely different DPI and sensitivity combinations. Most professional FPS players use an eDPI between 200 and 800. You can calculate your eDPI using the calculator built into this page.
What is the best DPI for gaming?
There is no single best DPI for gaming because the optimal setting depends entirely on your game type, monitor resolution, desk space, and personal preference. For FPS games like CS2, Valorant, and Apex Legends, most professional players use 400 to 800 DPI with low in-game sensitivity, giving a total eDPI of 200 to 800. This low eDPI provides precise micro-adjustment control and reduces the effect of hand tremors on aim. For MOBA and RTS games, 800 to 1600 DPI is more common as these genres benefit from faster cursor traversal of the screen. The most important factor is consistency — find a DPI you are comfortable with and stick to it.
Do I need to disable pointer acceleration before testing DPI?
Yes. Pointer acceleration (called Enhance Pointer Precision on Windows) adjusts cursor speed dynamically based on how fast you move the mouse — faster movements produce disproportionately larger cursor movements. This makes it impossible to calculate a fixed DPI value because the pixels-per-inch ratio changes with movement speed. To disable it on Windows, open Control Panel, go to Hardware and Sound, then Mouse, click the Pointer Options tab, and uncheck Enhance Pointer Precision. After disabling, re-run the DPI test to get an accurate reading. On macOS, there is no native acceleration switch in System Settings, but third-party utilities such as LinearMouse can disable it.
How long should I move my mouse for the DPI test?
A longer physical distance gives a more accurate DPI result because measurement errors become smaller relative to the total pixel count. A target distance of 10cm (about 4 inches) gives acceptable accuracy for most purposes. 20 to 30cm (8 to 12 inches) gives a more precise result and is recommended if your mousepad is large enough. Short distances of 1 to 2cm can produce high percentage errors because even a 1mm error in where you start or stop the physical movement represents a significant fraction of the total distance. For the highest accuracy, use the longest distance your mousepad allows and run the test multiple times.
Can I test my mouse DPI on Mac or Linux?
Yes. The DPI tester works in Chrome and Firefox on macOS and Linux. On macOS, set Tracking Speed to a consistent value in System Settings before testing and note that macOS applies its own cursor acceleration by default — you may need a third-party tool to disable it fully for an accurate raw sensor reading. On Linux the behaviour depends on your desktop environment — GNOME and KDE both have acceleration settings that should be set to Flat (no acceleration) before testing. Ubuntu and most modern Linux distributions work well with this tool in Chrome. After adjusting your acceleration settings, reload the browser and run the test again.
Is this mouse DPI tester accurate?
The accuracy of this DPI tester depends primarily on three factors: the accuracy of your physical ruler measurement, the consistency of your mouse movement (straight line, no lifting), and whether OS-level pointer acceleration is disabled. With acceleration disabled and pointer speed at 6/11 on Windows, the tool reads raw pixel counts from the browser's MouseEvent data, which accurately reflects the number of screen pixels reported by the driver. The main source of error is the physical measurement — a 1mm error in a 10cm distance introduces about 1 percent error in the DPI result. Running multiple tests and averaging the results reduces this error further. Professional sensor test equipment measures DPI on an optical bench but browser-based tools with proper methodology consistently produce results within 2 to 5 percent of bench measurements.
Is the mouse DPI tester free?
Yes, the mouse DPI tester is completely free with no account, no registration, no email address, and no usage limits. All mouse movement calculations happen locally in your browser using standard JavaScript MouseEvent data. No pixel counts, DPI readings, or movement patterns are ever transmitted to any server. You can test as many mice as you like, as many times as needed, across any operating system, with no restrictions.

Gamepad Tester — free browser-based Mouse DPI Test and analyzer for any mouse on Windows, macOS, and Linux. Measure actual DPI with a physical ruler, calculate eDPI, and detect sensor deviation. Data processed locally. Compatible with Chrome 58+, Edge 79+, Firefox 55+, Safari 14+.