Joy-Con Tester (Switch Drift Check)
結果の見方 · 2026年8月22日
To test a Joy-Con for drift, pair it to your computer over Bluetooth, then press a button so the browser detects it. Each Joy-Con connects as its own separate controller, so test the left and right units one at a time. This page loads the Joy-Con layout and the drift test, which is what most people come here for: hold the stick centered, start the test, and read the exact resting offset and direction the tool measures.
Joy-Con drift is the most widely reported controller fault of its generation, caused by wear and contamination in the tiny analog stick module. Because the effect is often small, a numeric drift reading is far more reliable than eyeballing it in a game. Everything runs locally in your browser with nothing uploaded. If the test shows a steady offset while your hands are off the stick, that is the signature of drift and a strong case for repair or replacement.
コントローラーのボタンを押してください
有線コントローラーはすぐに認識されます。
Bluetoothの場合はボタンを押して接続を有効にします。
How to connect Joy-Con
- Detach the Joy-Con from the console first. Each side pairs separately.
- Bluetooth: hold the small Sync button on the inner rail until the lights run back and forth, then pair the Joy-Con from Bluetooth settings.
- Press a button after connecting so the browser exposes it, and test one Joy-Con at a time.
Common Joy-Con problems
Joy-Con drift
The defining Joy-Con issue. The stick reports movement while untouched. Run the drift test with your hand off the stick; any consistent resting offset confirms drift. Nintendo has repaired affected units in several regions.
One Joy-Con at a time
Each Joy-Con is a distinct gamepad with a partial button set. If the map looks incomplete, that is expected: a single Joy-Con has only half the buttons of a full controller.
Small stick, faster wear
The compact stick module wears faster than a full-size controller. Drift can appear sooner, which is why a periodic numeric check is useful.
FAQ
How do I confirm Joy-Con drift?
Pair the Joy-Con, keep your hand off the stick, and run the drift test. A steady resting offset in one direction is drift. Random jitter near center is normal.
Why does only half the buttons show up?
A single Joy-Con is its own controller with a partial layout. Test the left and right units separately.
Can Nintendo fix Joy-Con drift?
Nintendo has offered repairs for drifting Joy-Con in several regions. A measured drift reading from this test documents the problem before you request service.