Measure PDF Drawings With Real Scale
Calibrate a page, apply engineering or architectural scales, and place accurate dimensions directly on your PDF drawings.
Free & full-featured · No uploads · Works offline
CALIBRATED MEASUREMENT
Take real measurements from PDF drawings
DraftPDF lets you define a page scale and use it across technical review workflows without leaving the browser.
Page scale setup: Set a scale per page or apply the same scale across the whole document from a dedicated scale dialog.
Preset and custom ratios: Use common architectural and engineering presets or enter custom ratios such as inches-to-feet or metric scales.
Measured annotations: Create dimensioned line and area markups that display real-world values instead of raw PDF points.
Frequently Asked Questions
Everything you need to know before you get started.
How do I measure a PDF drawing?
Step-by-step guide
Open the PDF in DraftPDF, set the page scale from the toolbar or Edit menu, then use the measurement tools to place calibrated dimensions on the page.
Can I use different scales on different pages?
Per-page scale support
Yes. DraftPDF stores measurement scale per page, which is useful for mixed drawing sets. If every sheet uses the same ratio, you can also apply one scale to all pages at once.
What can I measure?
Supported measurements
DraftPDF supports calibrated distance and area workflows, including line-based dimensions and polygon-based measurements for plans, markups, and technical review.
Are the measurements processed privately?
Privacy & security
Yes. Measurement setup and annotation authoring run locally in your browser. Your drawings are not uploaded to a server.
Ready to get started?
Open DraftPDF in your browser — no account, no install, no data ever leaves your device.
Free & full-featured · Works offline · No sign-up required
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