Free UML Tool

Powerful online UML tool for free, absolutely free

Finding a Free UML Tool?

Visual Paradigm Online (VP Online) Express Edition is a free online drawing tool that supports UML, ERD, Organization Chart, etc. It features a simple, intuitive yet powerful UML editor, which allows you to create professional UML diagrams smoothly and quickly. The free UML tool comes with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes and etc. You own the diagrams you created for personal and non-commercial purposes.


Drawing professional UML Diagram quickly and freely

Free UML Editor

Free UML Diagram tool for personal use:

  • No limited number of diagrams and shapes
  • No limited period of access
  • No ad

Draw as many diagrams as you like. Output and share as PNG/JPG/GIF/SVG/PDF.

Powerful UML Editor

UML diagramming can be simple and fun. Here are some of the features of our UML Diagram editor:

  • Drag-to-create shapes and connectors
  • Well attached connectors (no separate apart)
  • Draw your own diagrams with your own shapes
  • Hundreds of diagram examples and templates

Impressive UML Diagrams

Precisely position shapes and connectors with alignment guide. Format your UML Diagrams with formatting options and tools such as shape and line formatting, font style, shape alignment and distribution, embed image and URL, shadow effect, etc


Key features and benefits

Key features and benefits
  • Unlimited period of access
  • Unlimited number of diagrams
  • Unlimited number of shapes
  • UML Tool, ERD editor, Org. Chart editor, Floor Plan tool, ITIL, Business Concept Diagram
  • Can be upgraded to paid editions for more diagram types and features
  • Cross-platform: Windows, Mac, Linux. Compatible with all web browsers
  • Easy to use: Create and connect shapes with drag and drop. Connectors are sticked to shapes and never separate apart.
  • Apply different formatting options (shape and lines, solid and gradient paint), 40+ connector types, RTF caption, font options, shadow effect, etc
  • Draw your own diagrams with your own shapes.
  • Visio drawing and stencil import
  • Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
  • Get start quickly with hundreds of diagram examples and diagram templates
  • Google Drive integration
  • Easily embed text, external images and web links to diagram

But don't take our word for it

Try it yourself. Just browse the UML Diagram examples below and click Open Diagram to open and edit. You will see for yourself that it is everything we say it is, or perhaps more.

Start Drawing Your Free Diagram Today

No limitations, no obligations, no cancellation fees.


Get Started