Tools🇰🇷 한국어

Bubble Level

Check if a surface is level with your phone

📱 This tool requires a tilt sensor and works only on mobile. Not available on PC.
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FAQ
How does the level work?
It uses your phone's built-in tilt sensors (gyroscope/accelerometer) to measure the device's angle in real time. When the bubble is centered, the surface is level.
Is it accurate?
Sensor-based, so expect plus or minus 1-2 degrees tolerance. For precision work use a dedicated level, but it's fine for photo composition, hanging frames, and everyday use.
Why doesn't it work on PC?
PCs lack tilt sensors. Use a smartphone or tablet. iOS requires granting sensor permission.
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About the Bubble Level

The bubble level uses your smartphone tilt sensors to check whether a surface or device is level. Useful for photo composition, hanging frames and shelves, and checking furniture.

When the bubble sits inside the center circle, the surface is level. Left-right (X) and front-back (Y) tilt are shown in degrees. Sensor-based, so it works on mobile only.