Transform your operations with an activity diagram tool

Depict workflows and break them into bite-sized activities to better understand your system and program flow. Miro’s UML activity diagram tool lets you to convey information concisely and clearly to everyone — from developers to business managers.

An image of Miro's activity diagram tool

An activity diagram maker built for agile teams

Quickly find out what causes specific events using an activity diagram. Bring agility to your development process by working in one shared space where you and your team can communicate and collaborate across formats, tools, channels, and time zones.

An image of an activity diagram made in Miro's activity diagram tool

Why Miro is your best activity diagram tool

Optimize faster

Miro’s Diagramming mode makes it easy to create a UML activity diagram — including a curated diagramming toolbar, layers, and other dedicated tools. You'll have everything you need to build and share your visualization faster and get instant feedback.

From ideation to implementation

Design your technical plans by breaking down large processes into chains, making them easy to analyze and implement. Offer a high-level view to managers and maximize collaboration across teams by creating activity diagrams that resonate and make sense.

Quickly draw entire systems

Use Miro’s extensive UML shape pack to add activity diagram symbols, and use Smart Drawing to seamlessly create shapes and lines. Get a clearer view of your flow by adding and color-coding ellipses.

One source of truth

Say goodbye to back and forth with Miro’s extensive collaboration features. Easily draw activity diagrams, add Kanban boards, timelines, and other artifacts to one shared space. Invite your team to your Miro board and get everyone on the same page instantly.

Integrated with your favorite tools

Ideas, inspiration, and intel in full view. Visualize marketing campaigns and client and prospect info to take action, and track tasks and status updates for the team.

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Customer stories

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Related templates

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UML Activity Diagram

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

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UML Diagram Template

Model and design software at ease.

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UML Class Diagram Template

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

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UML Component Diagram Template

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

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UML Sequence Diagram Template

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

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UML Communication Diagram Template

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

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How to create an activity diagram online with Miro

1. Select the template

Open Miro and choose the UML Activity Diagram Template.

An image showing how to create an activity diagram online in Miro

2. Add shapes and symbols

Browse through our diagramming shapes library and drag the ones you want onto the canvas.

3. Connect the shapes

Start linking the shapes with connection lines and rearrange their directions as needed.

4. Add labels

Give context by naming processes and activities. Double-click on the text boxes to start editing them, or add your own from the toolbar.

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UML activity diagram FAQs

Why build a UML activity diagram?

An activity diagram serves as an analytical tool to help developers, business analysts, and even project managers map out a process flow and understand what activities happen over time. Similar to flowcharts, activity diagrams are especially useful for depicting a complex process.

Is Miro’s UML activity diagram maker free?

Yes, Miro comes with a free plan — allowing your team to start discovering what our UML activity diagram maker can do for you. To access our full UML diagramming shape pack, you’ll need a Business, Enterprise, or Education plan. Explore all our plans to choose the right one for your goals.