Diagrams come in many forms depending on their purpose.
- Flowchart: Lays out a work procedure or decision flow in order. It's the most common choice for organizing a whole process or showing step-by-step branches.
- Venn Diagram:  Shows how two or more items overlap using circular shapes. It's intuitive for comparing what they share and where they differ.
- Fishbone diagram: Puts a single problem at the center and sorts its causes out like branches. It's used for analyzing the causes of a problem systematically.
- Org chart: Shows the relationships between roles and ranks within an organization as a hierarchy. It's common in team introductions and internal reports.
- ERD (entity-relationship diagram): Shows how data connects within a system. It's mainly used when designing the structure of a service or system.

A diagram helps when content is complex or when you need to show relationships at a glance. Reach for one in situations like these:
- Organizing a work process or service flow step by step, like the flow from order intake to delivery.
- Comparing two or more items, or visualizing what they share and where they differ.
- Sorting and analyzing the causes of a problem in a structured way.
- Conveying an organization's makeup or role relationships at a glance.
- Showing a complex concept in an easy-to-understand way in a talk or report.

Both visualize information, but the kind of content they show is different.
- A graph shows numerical data and the relationships between variables. Bar graphs, line graphs, area charts, and the like are good for showing the size or change of values based on numbers.
- A diagram focuses on structure and relationships rather than figures. It shows how items connect, how a flow continues, and what structure the whole is built on. The hallmark of a diagram, like a flowchart or Venn diagram, is that it can convey concepts and context without any numbers at all.

Yes, you can make diagrams on the free plan. You also get free access to over 50,000 templates and over 350,000 photos and graphics. If you want premium templates and AI features too, upgrade to the Pro plan. You can see the details on the pricing page.

Yes. Once your diagram is complete, export it as a PPTX file and open it directly in PowerPoint. If you'd prefer to build the entire presentation in MiriCanvas, you can also try the AI Presentation Maker.