Measurement & sensors
Protractor
Measure the angle of a bevel or a hinge by placing 3 points on the camera feed, without touching the object.
Place 3 control points on the camera feed to measure an angle in real time. No need to touch the object. The built-in zoom lets you work on millimetre-scale details.
Android 7.0+ · Free to download
Key features
3 control points you drag directly on the live camera feed
Angle in degrees calculated instantly as soon as you move a point
Adjustable zoom to measure millimetre-scale details from a distance
Live camera background: no photo needed, measure on the fly
Automatic correction for angles above 180 degrees
Why use it?
Measure how far a hinge opens without putting a tool on it
Check the cutting angle of a piece of wood before sawing it
Zoom in on a knife bevel and measure its sharpening angle precisely
Works offline
Most tools work without an internet connection.
No account
No sign-up, no email address required.
Free to download
Every tool is free. A one-time “Zero Ads” purchase removes the ads.
Protractor is part of Tooliz
Along with 41 other tools. Free to download, on Android.
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Quentin (QuentinRG)Independent developer · Paris
Tooliz is an Android toolbox I built independently to bring everyday utilities together. Free to download, no account needed, designed to be useful and simple.
Discover all Tooliz tools