Hang a picture straight, level a washing machine or check a table without hunting for a spirit level. Lay your phone flat to see a round bubble and the tilt in degrees in both directions, or stand it on its edge along a shelf or frame to use it like a bar level. Calibrate it on a surface you trust for the most accurate readings.
loading toolHow to use your phone as a spirit level
- Choose Flat on a surface or On its edge.
- Press Start level (on iPhone, allow Motion & Orientation).
- Place the phone on the surface or edge you want to check.
- Adjust until the bubble is centred and the reading says 0.0° ✓ Level.
Good to know
- Edge mode works on any of the phone’s four edges: long edges for shelves, short edges for door frames.
- Try a sample shows a demo reading so you can see how it looks on a computer.
Questions
Why does it say no sensor was found?
Tilt and compass sensors are built into phones and tablets, not into most laptops and desktop computers. Open the page on your phone. On iPhone, tap Start and then Allow when Safari asks for Motion & Orientation access.
How accurate is it?
Phone sensors are usually good to about 0.1–0.5°, which is plenty for shelves, pictures and furniture. A phone case with a bump (like a camera bump) can tilt the reading, so calibrate on a known-level surface, or remove the case.
What does Calibrate do?
It remembers the current reading as zero. Put the phone on something you know is level (or on the same spot turned around 180° and average the two) and press Calibrate here.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
