Online Protractor
An interactive digital protractor for measuring angles directly on your screen. Upload an image to measure angles within it, or use it as an overlay tool.
0°
How to use:
- Drag center to move
- Drag top handle to rotate
- Upload image to measure
Upload Image to Measure
Drag center to move • Drag top handle to rotate • Upload image to measure
How to use the Online Protractor
- Move: Drag the center (red dot) or the body of the protractor to move it around the canvas.
- Rotate: Drag the rotation handle (small circle icon at the top arc) to rotate the protractor. You can also use the slider for fine adjustments.
- Measure Images: Click the "Upload" icon in the toolbar to upload an image. The image will be placed under the protractor, allowing you to measure angles within the photo.
- Zoom & Rotate Image: Use the toolbar controls to zoom or rotate the background image for better alignment.
Applications
This tool is perfect for students learning geometry, engineers checking quick angles from photos, or anyone needing to measure an angle on a digital image without printing it out.