RULER°

Online Protractor

Measure angles directly on your screen. Drag the arms to set your angle, or type a value. Works on desktop and mobile.

PROTRACTOR — COMING SOON

How to use the online protractor

Click and drag the arms of the protractor to the angle you want to measure. The angle is displayed in real time. You can also manually type an angle value to set the protractor precisely.

What is a protractor used for?

Protractors are used to measure and draw angles in geometry, construction, woodworking, and engineering. An online protractor lets you measure angles on your screen without needing a physical tool.