Angle Protractor - Free Online | FunToolX

The protractor tool displays a semicircular or circular protractor on the screen, which can be used to measure the size of any angle on a picture or interface. Align the center point of the protractor with the apex of the angle, rotate the protractor so that one edge is aligned, and read the angle value corresponding to the other edge.

Supports two units of degree and radian, which can be switched in real time. The protractor can scale the size, rotate the angle, and adjust the transparency, making it easy to use in different scenes. Some versions support marking angles directly on the protractor or saving measurements.

This tool is suitable for students to learn geometry, measure angles in pictures, or design scenes where quick angle measurement is needed. Use SVG or Canvas to draw protractor, and support mouse drag rotation and alignment. This is a pure front-end tool that does not require uploading any files.

Protractor tool, which displays a virtual protractor on the screen, can measure the size of any angle on the picture or screen, and supports switching between angle and radian units for geometry learning or design.