Measure Angle
Click three points on a photo and read the angle in degrees.
or browse filesdrop an image here or paste · see all measuring tools
Line size
Click three points on a photo and read the angle in degrees.
or browse filesdrop an image here or paste · see all measuring tools
Drag points to adjust - right-click deletesDrag points to adjust - delete with ×
Click three points, with the corner as the middle click, and the angle appears in degrees instantly, drawn right on the photo like a protractor. Add as many angles as you need, each stays visible and listed, and Copy values takes them all at once.
Angles are the one measurement that needs no reference length: degrees are degrees at any zoom and any resolution. Open the photo, click three times, read the answer. The built in loupe magnifier helps place each point on the exact pixel, which matters when the lines are thin or the corner is tight.
Roof pitches and staircases on photos and plans, joint angles in woodworking and metalwork, geometry homework checked against a drawn figure, the lean of a wall or post, bike frame and furniture geometry, logo and design work, or posture angles in sports and physio photos. If a camera can see it, the angle can be read.
Angle is one of five measurements in the same engine: distance, radius and diameter, area and perimeter each have their own page, and the full Measure Image tool switches between all of them. For pixel positions there is the coordinate finder, and for a picture's own dimensions the image size finder. The full measuring collection shows them all side by side.
The photo never leaves your device: every click and every calculation happens in your browser. No upload, no account.
Click three points: one on each arm of the angle, with the corner point in the middle. The angle appears in degrees immediately, drawn on the photo, and stays listed so you can measure several and copy them together.
No. Unlike distances and areas, angles are independent of scale, so no reference length is needed. The degrees you read are correct at any resolution and zoom.
The math is exact; accuracy depends on how precisely you click. The loupe magnifier places points on the exact pixel, and longer arms give steadier readings than very short ones. Perspective can skew angles on surfaces photographed at a slant, so front on photos measure best.
No. The image opens in your browser and every calculation happens on your device. Nothing is sent to any server.