Homediagramminguml class diagram

Create solutions for every system with a UML class diagram tool

Quickly understand the multiplicity of your system with Miro’s UML class diagram tool. Help your team visualize dependencies, objects relationships, classes, and attributes — all in one tool.

Over 70M+ users love Miro

Break silos with a class diagram maker

Quickly analyze your class diagram relationships and have all the information you need at a glance in one shared space. Plan and draw your technical plans and present them effortlessly to every stakeholder.

Why Miro is the best class diagram maker

Enable innovation

With Miro’s UML class diagram tool, it’s easy to build color-coded class diagrams and simplify complex system architecture. Help your team quickly identify areas for improvement and run your sprint sessions with diagrams that resonate and bring clarity.

Facilitate development

Create a UML class diagram using industry-standard UML shapes to build a common understanding across your organization. Add all the information your team needs and implement code with less back and forth, avoiding misunderstandings.

Improve operations

Map out all your system’s objects, classes, and attributes with a class diagram online, and create conditions for your team to thrive. Communicate the necessary steps to perform operations and implement decisions according to your plan.

No more context-switching

Build your UML class diagram without wasting time switching between tools. Use the UML shape pack and, if needed, add other artifacts to your board using integrations such as Jira, Coda, and Airtable.

Be agile

Develop your system architecture seamlessly, giving teams the frameworks needed for true innovation. With Miro’s UML class diagram creator, execute all the steps of the UML creation process in one shared space, improving efficiency and system-design delivery.

Effortless execution

Show how classes, attributes, and operations work together by identifying the existing relationships within a system, with a UML class diagram. Miro’s smart drawing features allow you to create your class diagram intuitively, creating shapes and inserting objects with just one click.

Related templates

Plan object-oriented systems in a joint workspace that fosters collaboration and innovation using a UML class diagram.

Plan, draw, and share an object-oriented system’s elements and components using our Component Diagram Template.

Visualize the workflow of a process and how objects perform actions.

Understand the order in which the events within a sequence interact with each other.

Get a complete snapshot of how every object in your program interacts with all the others.

Plan, analyze, and optimize activities by breaking them into subprocesses and constituent decisions with our Activity Diagram template.

How to make a UML class diagram with Miro


Select the template

Choose the UML Class Diagram Template.


Add shapes and symbols

Browse through our diagramming shapes library.


Connect the shapes

Start connecting the shapes with connector lines.


Add labels

Give context by naming processes and activities.

Integrated with your favorite tools

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Loved by many teams

Customer stories

“Miro helps solve one of the major gaps in product design: how to manage tasks across product designers whose projects are in different tools.”

Jane Ashley

Head of Design at DocuSign

UML class diagram FAQs

Many diagramming tools are available - from drawing a simple diagram online, to advanced capabilities that allow you to draw more complex UML class diagrams and sharing them with your team. When you choose a tool to draw a class diagram, define your priorities and what objectives you want to achieve with your diagram. Is it essential to share with stakeholders? Do you need instant feedback on your class diagram? Is the tool intuitive and easy to use? When answering these questions, you can better evaluate which tool is best for drawing your class diagram.

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