How to Measure Irregular Areas

Measuring odd shapes is easy: set the scale, draw a closed polygon around the boundary, and refine vertices to improve accuracy. This guide walks you through the exact steps.

1) Start blank or upload an image

Open the calculator and either start on a blank canvas or upload a plan/photo. If you use an image, set a known distance to scale the canvas.

2) Draw the outline

Click to add points along the boundary. Finish by connecting back to the first point so the shape is closed.

3) Refine for accuracy

Drag vertices to align precisely with corners/curves. Add more points where the boundary changes direction.

4) Choose units & read results

Switch between m², ft², acres, or a custom unit. Area and perimeter update live.

5) Export & share

Save drawings or export data once you’re satisfied.