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Online Ruler vs A2Z Tools

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Online Ruler compared with A2Z Tools
DetailOnline Ruler logo Online RulerA2Z Tools logo A2Z Tools
What it doesFree on-screen measuring tools that run in your browser Free online tools for files, media, text, code and business. No sign-up required.
StageNot given Established
FoundedNot given 2021
Based inNot given IN
Pricing modelFree Freemium
PricingNot given A2Z Tools core offering is free. A2Z Workspace apps are free with an account. Pro plans for individual apps are coming soon with pricing to be announced. A2Z Everything will add ad-free access to all A2Z tools.
Key features
  • Actual-size ruler in cm, mm and inches
  • Bank-card and screen-diagonal calibration
  • Top, left and right rulers with drag-to-measure readout
  • Full-screen mode and browser-zoom warning
  • Image measurement tool
  • Length unit converter
  • Touch dragging support for phones and tablets
  • Local storage of calibration without server uploads
  • 1,122 free tools across 52 categories
  • No signup required to use most tools
  • Browser-based processing for most tools
  • Mobile and tablet compatible
  • Browser extensions for Chrome, Firefox, and Edge
  • Free API access
  • Embeddable widgets for websites
  • Chat widgets for WhatsApp, Telegram, Facebook, Viber
What makes it different
  • Calibration step compensates for browsers' inability to detect physical display size
  • ISO/IEC 7810 ID-1 standard bank card calibration ensures reproducible accuracy
  • All calculations run locally in your browser with no data sent to servers
  • Works on any device with a browser and JavaScript enabled
  • Content follows standards-based principles with no invented precision or fake reviews
Not given
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check27 no change since last check
Trust Flow (Majestic)217
Citation Flow (Majestic)1831
Referring domains (Majestic)1051

3 details filled in for both companies.

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