Plan Measure

Measure distances, perimeters, and areas on architectural PDF plans, then export takeoff totals. Free and MIT licensed, with no account or install: it runs in your browser and plans are never uploaded. Missing something? Open an issue.

Features

• Calibrate each page with a reference distance, separate X/Y scales, or a known ratio.
• Draw and edit lines, polylines, and polygons with Snap, Ortho, and undo/redo.
• Organize measurements with classifications, groups, notes, and reusable templates.
• Review totals across pages in Takeoff.
• Export CSV, XLSX, ODS, JSON, annotated PDFs, or editable project backups.

Quick start

1. Choose Open PDF or drop a PDF into the workspace, or Try a sample.
2. In Scales → Add scale, mark a known distance and enter its real-world length.
3. Choose Line, Polyline, or Polygon, click to place points, and press Enter to finish.
4. Open Takeoff for totals or Export to download results.

See the user guide for scales, editing, exports, recovery, and keyboard controls.

Storage and limits

Projects autosave in this browser, with no cloud sync; clearing site data removes them. Use Export backup (save status) or Projects → Export to keep a .planmeasure backup with the PDF and editable data. JSON and spreadsheet exports are not backups.

• PDFs up to 100 MB; password-protected PDFs cannot be opened.
• Drawing needs at least 480 × 360 px of viewer space and a fine pointer, or keyboard authoring enabled in Settings.
• X/Y calibration corrects axis scale differences, not skew or perspective.
• Offline use depends on the browser cache; it is not yet an installable PWA.

Development

Requires Node.js 24:

npm ci
npm run dev

Contributing · Credits · Roadmap · Releasing · JSON export contract · Changelog · Security · Code of conduct