Mouse double-click test
Click each button one at a time at normal speed inside the box. A second click less than 80 milliseconds after the first is a sign of a fault.
Click one at a time here
Left
Middle
Right
The test runs entirely in your browser; nothing is sent.
This is a common fault in worn switches. Before buying a new mouse, try HEJİR's double-click fixer: it ignores a second click that comes too soon.Try HEJİR free
Why does it happen?
As the metal inside the switch wears, one press makes contact several times.
Can software fix it?
Often yes: a second click within a few milliseconds is ignored. If the fault gets worse, the switch needs replacing.
More tests
Reaction time testHow fast do you react? Click the moment the box turns green: five tries, your average in milliseconds and your best.Aim trainerClick 30 targets as fast as you can: your time, your time per target and your accuracy. Free, in the browser.Screen refresh rate test (Hz)Is your monitor really running at 144, 165 or 240 Hz? This test measures the rate your browser draws at, in seconds.Left and right sound testDo your headphones or speakers play left and right the right way round? Play a sound on each side, or let it travel between them.Microphone testIs your microphone working? Talk and watch the level move. Free, in the browser; the sound never leaves your computer.Dead pixel testFind dead or stuck pixels on your screen: full-screen colours one after another. Free, in the browser.Click speed test (CPS)How many times can you click in a second? A 5 or 10 second CPS test with live speed and your best score.Mouse polling rate test (Hz)How many times a second does your mouse report its position? Measure 125, 500, 1000 Hz and more in the browser.Keyboard key testDoes every key work? Pressed keys light up, and it shows how many keys can be held at once (ghosting).Sensitivity converter between games (cm/360, eDPI)Convert mouse sensitivity between CS2, Valorant, Apex, Overwatch 2 and Call of Duty, and see your cm/360 and eDPI.Real DPI analyzerMeasure your mouse's real DPI: move it a distance you measured with a ruler and let the browser count.Is my mouse supported? Search 885 mice and keyboardsType your mouse or keyboard: Logitech, Razer, Corsair, SteelSeries, ROCCAT, Glorious and more. See if HEJİR knows it by name, and what works with the rest.VALORANT & CS2 crosshair generatorDesign a VALORANT or CS2 crosshair, see it at real size over a game scene, copy the code, or turn a VALORANT crosshair into CS2 and back.