Spirit Level Online
A free digital spirit level for your phone. Lay your device on any surface and watch the bubble move inside the circular level, with live pitch and roll angles in degrees. One-tap calibration lets you measure against any reference angle.
Waiting for sensor...
Pitch
0.0°
Roll
0.0°
Tilt
0.0°
Tip: lay the phone flat on the surface for 2D leveling, or hold it against a wall in portrait for a 1D check.
How to use
- Press Enable Level and grant motion sensor permission if your phone asks.
- Lay your phone on the surface you want to check (or hold it against the surface).
- The bubble moves inside the circle; when it sits in the center, the surface is level.
- Press Calibrate at any time to zero the reading at the current position, then measure relative to that reference.
Good to know
- The green dot in the middle is the target — center the yellow bubble on it for a level reading.
- Calibration is useful for checking slopes or matching an existing angle rather than perfectly flat.
- Desktop computers and laptops usually have no motion sensor — the tool will show a message if none is detected.
- Phone cases and magnets nearby can slightly disturb the sensor; remove thick magnetic cases for best results.
- This is a handy guide for hanging frames or placing furniture, not a certified measuring instrument.