Powerful Measurement Tools

Our online digital protractor is packed with advanced features designed for students, engineers, and DIY enthusiasts. Experience precision right in your browser.

High Precision Accuracy

Measure angles with up to 0.1-degree precision. Our smart algorithm ensures that every rotation and alignment renders exact values for critical work.

Image Overlay Mode

Upload any image (JPG, PNG, PDF) from your device and overlay the transparent protractor to measure angles on blueprints, photos, or diagrams.

Live Camera Measurement

Use your webcam or mobile camera to capture real-time objects. Snap a picture and instantly apply measurement tools without leaving the app.

Fully Responsive

Whether you're on a desktop huge screen or a small smartphone, the responsive canvas adjusts automatically to give you the largest possible workspace.

Smart Controls

mistake? No problem. Use our quick Reset, Rotate 90°, and Zoom controls to navigate your workspace efficiently. Drag and drop pushpins for custom anchor points.

Save & Export

Once you've measured your angles, easily save the view as an image file to share with colleagues, teachers, or for your own records.

Ready to Start Measuring?

Join thousands of users who rely on our free tool for their daily geometry and engineering tasks.

Launch Protractor Now