UML Diagram Maker

You don't build a house without a blueprint, right? The same should go for building software. Use Lucidchart to create UML diagrams that will serve as efficient blueprints.

Make a UML diagram

99% of the Fortune 500 trust Lucidchart to keep teams on the same page.

UML Shape Library

Draw state diagrams, activity diagrams, use case diagrams, and more. With an extensive shape and connector library, you'll find everything you need.

Make a UML diagram

UML diagrams and more

Whether you're working by yourself, with a client, or on a design team, you'll find an option that's right for you. Start out with Lucidchart's free UML creator or test the premium features through a free trial.

More Features

Publish and share

Share your UML diagram by embedding it in a blog, wiki, or website. You can even export your diagram as an image and include it in a document or presentation.

More Features

Feature Highlights

You can start diagramming now with Lucidchart. We make it simple, efficient, and even fun.

Simple to use
Lucidchart helps you find what you’re looking for as quickly as possible. Our shapes can be dragged right from the library onto the diagram. You can place shapes exactly where you need them, insert text, and quickly draw lines with just a click.
Visio import/export
We won’t hold it against you for using Microsoft Visio in the past. It’s easy to import and export Visio files so you can save the work you've already done. The whole experience is fast and seamless.
Fully integrated
Lucidchart is fully integrated with Google Apps. Once you get started with Lucidchart, you’ll be able to find us right in your Google Apps productivity suite along with Gmail and Google Drive. Plus, you can use the same login you use for Google.
Publish and share
You can easily share your UML diagram with your co-workers, clients, or your boss. Your diagrams can be embedded into a webpage or published as a PDF, and Lucidchart’s presentation mode turns your creation into a great-looking visual aid.