How do I measure distance or area on a drawing?

Load a PDF or image, set the scale using a long dimension written on the drawing (such as an overall dimension), then click on the drawing in length or floor-area mode. The real-world length, area, and wall area are calculated automatically in mm, cm, m, ft, or in (areas in m² or ft²).

Does it support multi-page PDFs?

Yes. When you load a multi-page PDF, a page switcher appears and each page keeps its own scale and measurement results.

Are my uploaded drawings sent to a server?

No. Loading, measuring, and saving all happen inside your browser (in on-device IndexedDB). Your drawings and measurement data are never sent to an external server.

Yes, it is free to use. No installation is required — it runs entirely in your browser.

Drawing Measure｜Measure length & area from PDF / image (free, in-browser)

⑤ Furniture layout (rectangle)

Enter width and depth to place a scaled rectangle over the drawing. Drag to move; use the round handle to rotate (Shift = 15°). Shift-click to select multiple and move them together.

Width × Depth (mm)

Features you'd like

These don't exist yet. Tap the ones you want (as many as you like); the votes help decide what to build next. Only the feature names are counted. Drawings and measurements are never sent.

Free tool to measure length and area from PDF & image drawings

This tool loads a PDF or image drawing in your browser and lets you measure distance (length), floor area, and wall area — a free online measuring tool. Just match the scale using a known dimension on the drawing, and it converts the distance between two clicked points, or the area of a polygon you draw around a room, into real-world units — metric (m, m²) or imperial (ft, ft²). No installation is needed and everything runs on your device, so your drawings are never uploaded.

Main features

Load PDF & images (multi-page PDF supported / drag & drop)
Page rotation (90° left or right, per page; kept in the PDF export)
Scale calibration (set horizontal and vertical separately, with an estimated accuracy)
Floor area measurement (polygon, m² or ft², multiple)
Length measurement (polyline, multiple / Shift for 15° snapping)
Wall area calculation (total length × height)
Metric and imperial units: mm, cm, m, ft, in (type feet-inches such as 12'-6")
Furniture layout (place, move and rotate rectangles to scale)
Point notes (annotations): add and move
Auto-save of work in progress (saved on device, restored next time)
Export to PDF, or save and resume your work as a .data file

How to use (3 easy steps)

Load a drawing (PDF / image)
Set the scale using a long dimension on the drawing
Measure length and area

For a fuller introduction, see the Drawing Measure product page. More tools are available at SoNice!.