Measure Area
Outline any shape on a photo with clicks and read its area.
or browse filesdrop an image here or paste · see all measuring tools
Line size
Outline any shape on a photo with clicks and read its area.
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 its area appears instantly, in square pixels by default or in real units like square meters and square feet once you calibrate with a known length. The polygon can have as many points as the shape needs, follows any outline, and stays drawn on the photo while you measure the next one.
One known length in the picture unlocks real areas: the scale bar on a floor plan or map, a wall of known length, a ruler in the photo. Measure it once, type its value, and every polygon after that reports its area in your chosen unit squared.
Room and apartment areas from floor plans, plots and gardens from satellite views, roof and facade surfaces for material estimates, lawn and paving areas, leaf or wound area in research photos, or the share of a design a certain element occupies. Irregular shapes are exactly what the polygon is for: just add more points along the curve.
Area is one of five measurements in the same engine: distance, angles, radius and diameter 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 points around the outline of the shape; the polygon closes itself and the area appears immediately, drawn on the photo. Use as many points as the outline needs, more points along curves give a closer fit.
Switch to real units and measure one known length in the picture, like a floor plan's scale bar or a wall with a known measurement, then type its value. Every area after that converts automatically to your unit squared.
Yes, that is the point of the polygon: it follows any outline you click, concave corners included. For curved edges, place points closer together along the curve and the polygon approximates it as closely as you like.
No. The image opens in your browser and every calculation happens on your device. Nothing is sent to any server.