Draw with mm dimensions online
Add editable dimension lines in millimeters to a sketch or marked-up image—lighter than opening CAD, clearer than guessing pixels in Paint.
What you get
EngSketch in the browser—for quick technical communication, not formal document review.
- Place dimension lines in millimeters—not freehand labels on a screenshot
- Sketch from scratch or dimension over an imported image
- Enough precision for explanations and email—not formal manufacturing drawings
How it works
Three steps from image or blank sheet to a shareable drawing.
- 01
Start
Open a blank sheet or import an image—a screenshot, PDF, or photo from the clipboard.
- 02
Dimension
Place dimension lines in millimeters. On a photo, calibrate scale from one known measurement.
- 03
Share
Share or export a full PNG or PDF page, copy to clipboard, or print—for email, chat, and review.
FAQ
Can I draw a technical sketch from scratch?
Yes—blank sheet, lines, shapes, dimensions, and annotations.
Is this the same as CAD dimensioning?
No—EngSketch is for quick technical communication. Use your CAD system for manufacturing drawings and DWG export.
Does EngSketch replace CAD?
No—for quick sketches and markup on images, not manufacturing drawings or DWG export.
Related
- Technical sketch tool in your browser
Draw lines, rectangles, and dimension lines in millimeters—on a blank sheet or over a screenshot. No install, no account.
- Calibrate photo scale and add mm dimensions
Import a field or site photo, set scale from one known measurement, then place dimension lines in millimeters—in the photo plane, for field notes and email.
Ready to sketch?
Open the editor—sketch from scratch or mark up a screenshot—in minutes.
Questions, ideas, or something not working? FeedbackShare feedback