About Online Ruler Free

OnlineRulerFree.com makes simple, accurate measuring tools that run in any web browser: an actual-size on-screen ruler, printable rulers and templates, a ring size finder, a protractor and screen tools. Everything is free, needs no account, and works offline after your first visit.

We focus on accuracy (screen calibration that survives zoom changes and vector printables with a built-in test square) and speed (no heavy frameworks; pages load in a fraction of a second).