AreaImageCalc is a free, open-source tool that measures area, distance and perimeter on images, floor plans, maps and PDFs. It needs JavaScript to run — everything happens locally in your browser and nothing is uploaded. Source code and downloads: github.com/arrow501/AreaImageCalc.

Drop image, PDF, or project here

or click Open · Ctrl+V to paste

Free, open-source area and distance measurement with real-world scale calibration. Everything runs in your browser — nothing is uploaded.

No tool Drop an image, click Open, or paste to start made with love by arrow

Scale	`S` / `1`
Polygon	`P` / `2`
Freehand	`F` / `3`
Distance	`D` / `4`
Edit points	`E` / `5`
Perspective	`W` / `6`
Move shape	`M`
Nudge selection (Move tool)	Arrows / `Shift`+Arrows
Label / rename	`L`
Pin note	`N`
Hide/show shape	`H`
Undo / redo	`Ctrl`+`Z` / `Ctrl`+`Shift`+`Z`
Delete shape / last point	`Del` / `Backspace`
Finish path	`Enter` / double-click / right-click
Exit tool / cancel	`Esc`
Pan image	`Space` + drag
Zoom in / out	`+` / `-`
Fit to view	`Ctrl` + `0`
Previous / next page	`PgUp` / `PgDn`
Show this help	`?`

AreaImageCalc — measure area and distance on images, floor plans, maps and PDFs