Mouse Tester

Click every mouse button and scroll the wheel below to check they all work.

Click inside the box below to test your mouse — all buttons are detected automatically and the scroll wheel is captured while the box is active. Move the cursor to see the trail; the page scrolls normally until you click in.

click to test scrollmove here

LEFT

RIGHT

SCROLL

FWD

BACK

Buttons Tested0 / 6 (0%)

Click History

No clicks yet…

0Total Clicks

0CPS (now)

0Max CPS

—Last Click Gap

Left0

Middle0

Right0

Back0

Forward0

Scroll Up0

Scroll Down0

Double-clicks0

Repeats faster than 70ms get flagged here as a possible switch fault.

Test every button on your mouse in one place. Click left, right, middle, and the side buttons, spin the scroll wheel, and watch each one light up with live counts, CPS tracking, and double-click detection. Best used on a desktop with a mouse.

Want to measure your mouse's report rate? Try the Mouse Polling Rate Test to see your Hz in real time.

Mouse Testing Guide

What is the Mouse Tester?

The Mouse Tester is a free online tool that verifies every input on your mouse is working correctly. As you click, the matching button on the on-screen mouse lights up and its counter increases, giving you instant visual feedback. It combines a button test, scroll wheel test, CPS tracking, and double-click detection in a single place — perfect for checking a new mouse or diagnosing a failing one.

How to Use the Mouse Tester

1. Move your cursor into the test area — your live coordinates appear in the corner.
2. Click each button: left, right, middle (press the wheel), and the side buttons.
3. Scroll the wheel up and down to test both scroll directions.
4. Watch each input light up green and its counter rise to confirm it works.
5. Check the double-click readout for any unusually fast repeats, then press Reset to start over.

What This Tool Tests

Input	What it checks
Left & Right	Primary and secondary buttons register every press.
Middle (wheel click)	The wheel button works when pressed in.
Scroll Up / Down	The wheel reports both scroll directions cleanly.
Back & Forward	The thumb side buttons are detected.
CPS	Your live and maximum clicks per second.
Double-click	Time between clicks, flagging faulty fast repeats.

Spotting a Double-Click Fault

A worn mouse switch can register a single physical click as two — known as chatter or a double-click fault. Because no human can click twice in under 70 milliseconds, this tester flags any repeat that fast as a likely hardware problem. If you see warnings appear from single clicks, your switch is probably failing and the mouse may need repair or replacement.

When to Test Your Mouse

• After buying a new or used mouse, to confirm all buttons work.
• When clicks feel unreliable, get missed, or seem to register twice.
• Before a competitive gaming session, as a quick hardware check.
• To verify that programmable side buttons are being detected.
• After cleaning or repairing a mouse, to confirm everything still responds.

Frequently Asked Questions

A mouse tester is a free online tool that checks whether every button on your mouse works correctly. It gives live visual feedback as you click — left, right, middle (wheel), and the side back/forward buttons — and tracks your scroll wheel, click speed (CPS), and double-click behaviour, all in one place.

Move your cursor over the test area and click each button in turn. The matching part of the on-screen mouse lights up green and its counter goes up, so you can confirm every button registers. Scroll the wheel up and down and click it in to test the middle button, and press the side buttons to test back/forward.

The tool measures the time between consecutive clicks of the same button. A normal double-click is a couple of hundred milliseconds apart. If it sees repeats faster than 70ms — far quicker than a human can click — it flags them as a possible double-click switch fault, which is a common sign of a worn-out mouse.

Some browsers reserve the side buttons for page navigation. This tester tries to capture them inside the test area, but if a side button still navigates, your browser or mouse software is intercepting it first. The left, right, middle, and scroll inputs work everywhere.

The wheel test only captures your scroll once you click inside the test area, so the page keeps scrolling normally the rest of the time. Click anywhere in the box first — it shows “scroll captured” — then scroll up and down to test both directions. Move the cursor below the box (or click outside it) to scroll the page again.

Yes — left-click, right-click, and two-finger scrolling will register from a trackpad. However, a trackpad has no middle or side buttons, so a real mouse is best for a complete button test.

This is an all-in-one button and scroll check. To dig deeper, use the CPS Test for click speed, the Mouse Polling Rate Test for report rate, the Scroll Wheel Test, or the Mouse DPI Analyzer.

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