Measure Perimeter
Outline any shape on a photo with clicks and read the length around it.
or browse filesdrop an image here or paste · see all measuring tools
Line size
Outline any shape on a photo with clicks and read the length around it.
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 around the outline of any shape and the length all the way around it appears instantly, in pixels by default or in real units like meters and feet once you calibrate with a known length. As many points as the outline needs, on any shape, with every measurement staying drawn and listed.
One known length in the picture is enough: a scale bar on a plan or map, a wall with a known measurement, a ruler in the photo. Measure it once, type its real value, and every perimeter after that reads in your chosen unit.
Fencing length around a plot from a satellite view or site plan, skirting and trim runs around rooms on a floor plan, edging for lawns and flower beds, the outline length of a part or template before cutting, borders on maps, or the distance around a running route sketched on an aerial photo.
Perimeter is one of five measurements in the same engine: distance, angles, radius and diameter and area 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 points around the outline of the shape; the outline closes itself and the total length around it appears immediately, drawn on the photo and listed beside it.
Switch to real units and measure one known length in the picture, like a plan's scale bar or a wall with a known measurement, then type its value. Every perimeter after that converts automatically.
Perimeter is the length around the outline; area is the surface inside it. Both use the same click around the shape workflow, and both pages share one engine, so you can switch between them without losing your picture.
No. The image opens in your browser and every calculation happens on your device. Nothing is sent to any server.