About Online Protractor
A simple tool to measure angles without installing anything.
What it is
TransferidorOnline.com is a free virtual protractor. Measure angles on screen, over a photo, or with live camera. Works on phone and desktop.
How it works
- Drag the black (V) point to the angle vertex
- Align the blue arm with one side
- Drag the red arm to the other side and read the value
Private by default
Everything runs in your browser via Canvas. No photo is uploaded. Close the tab and the image is gone.
Contact
Questions or ideas: contato@transferidoronline.com
Why simpler?
- No V → M → measure menu — just drag
- Photo and camera in 1 click
- Reading always on top + complement and radians
More questions
Do I need to select the protractor first?
No. There is no “Select” mode here. Just drag any point.
Does it work on mobile as a real tool?
Yes. Open fullscreen, hold the phone edge against the real object with the camera on.