What is an Online Protractor?
An online protractor is a free web-based tool that lets you measure or draw angles without installing any software. It is perfect for students, teachers, designers, carpenters, and anyone who needs quick, accurate angle measurements.
How it helps you
- Instant access: Runs in any browser—desktop, tablet, or phone.
- Accurate: Displays angle value in real time with ±0.1° precision.
- Interactive: Drag to rotate, pinch to zoom, tap to lock.
- Share & save: Export your angle as a PNG image or share the live link.
- Classroom friendly: Full-screen mode for projectors and smartboards.
Quick Start
- Tap/click and drag the red handle to set your desired angle.
- Use the Snap 15° button to lock to common angles.
- Adjust line width or opacity for better visibility.
- Click Save PNG to download the current view.