Calibrate before you measure
Scale-aware measurement keeps lengths and areas grounded in the drawing instead of disconnected from the review notes.
PDF measurement
Calibrated PDF Measurement Tool
Set drawing scale, measure directly on the PDF, and keep measurements visible alongside the markups and comments that explain the work.
- Scale calibration
- Length measurement
- Area measurement
- Measurement exports
Saving, exporting, and bill-of-quantities persist once you sign up free
Measure inside the markup workflow
Contractors can measure, annotate, count, and comment without jumping between a viewer, spreadsheet, and screenshot tool — and quantities can flow straight into quantity takeoff.
Export the evidence
Marked-up PDFs preserve the measurement context so others can understand how the number was checked.
Common questions
Short answers for contractors
Can I measure a scaled PDF drawing?
Yes. Calibrate the drawing scale first, then use measurement tools to check lengths and areas directly on the PDF.
Is ContractorCounter only for estimating?
ContractorCounter is focused on drawing markup, PDF annotation, calibrated measurement, counts, stamps, comments, and clean exports. Estimating can happen after the markup work is clear.
Does it work in the browser?
Yes — ContractorCounter is fully browser-based, which means it runs on Windows, macOS, and iPad without an installer, a Windows-only desktop dependency, or a virtual-machine workaround for Mac users. Upload PDF or image drawings, calibrate the scale once per sheet, and the full markup, measurement, and counting workflow runs in the tab — at the desk or on site. Because the workspace lives in the browser, the same drawing opens identically on every machine, so the office and the field are always looking at the same markups without anyone syncing files or matching software versions. If your team has been locked out of desktop-first tools on Mac or iPad, this is the structural difference to test first.