MeasureOnImage.com
Take approximate real-world measurements from an image using an object with known size as scale. Quick, simple, and private – your file is processed in the browser without being uploaded.
Drag and drop file here or use the button above
MeasureOnImage.com is a free, browser-based tool that lets you measure distances and dimensions directly on any image — floor plans, blueprints, maps, technical drawings, or everyday photos. No installation, no upload to our servers. Everything runs in your browser for complete privacy.
Click "Upload Image" or drag and drop any photo, blueprint, floor plan, or map onto the canvas. Supported formats: JPG, PNG, PDF (first page).
Draw a red SCALE line over a reference object with a known real-world measurement — for example, a door (2 m), a table (1.5 m), or a ruler. Enter the known value and unit.
Draw additional lines over any object you want to measure. The tool automatically calculates the real-world length based on your scale.
Download the annotated image as PNG or JPG, or export as PDF for reports and documentation.
Yes, the tool is completely free. No account or registration is required.
No. Your image is processed entirely in your browser. It never leaves your device.
You can measure on any image: floor plans, architectural blueprints, maps, construction drawings, product photos, land plots, and more.
Accuracy depends on the quality of your scale reference. If you set the scale using a known object (e.g. a door frame), measurements will be proportionally accurate across the image.
Yes. The tool is fully responsive. Use one finger to draw lines and two fingers to pan and zoom on mobile.
You can use any unit you like — metres, centimetres, millimetres, inches, feet, or any custom label.
Currently the tool works within a single session. You can export the annotated image as PNG, JPG, or PDF to preserve your work.