Use Case Diagram Generator

A use case diagram is a UML behavioral diagram that represents the functional scope of a system by showing the actors that interact with it and the use cases — discrete system functions or goals — that they participate in. Actors are shown as stick figures or labeled boxes outside a system boundary rectangle; use cases are labeled ellipses inside the boundary; and relationships between them are lines, with include and extend relationships drawn as dashed stereotype arrows. SciFig's use case diagram generator produces labeled UML figures from plain-language descriptions of any system's requirements.

A use case diagram shows what a system does — the functional requirements and which actors participate in them — at a high level of abstraction without showing how or when. A sequence diagram shows how a specific use case is realized — the chronological message flow between participants during one interaction scenario. Use case diagrams are used for requirements documentation and functional scope communication; sequence diagrams are used for interaction behavior documentation. SciFig generates both from plain-language descriptions.

The system boundary in a use case diagram is drawn as a labeled rectangle that encloses all the use cases that belong to the system. Actors are drawn outside this boundary to indicate that they are external to the system and interact with it through the use cases. The boundary rectangle is typically labeled with the system name at the top. Describe your system name and which actors and use cases belong to it, and SciFig's use case diagram online generator places the boundary and labels automatically.

Include is a dependency relationship where one use case always invokes another as part of its behavior — drawn as a dashed arrow labeled <<include>> pointing from the base use case to the included one. Extend is a conditional dependency where one use case optionally extends the behavior of a base use case — drawn as a dashed arrow labeled <<extend>> pointing from the extending use case to the base. Describe these dependencies in plain language and SciFig's use case diagram maker AI renders the correct stereotype arrows with UML notation.

Yes. SciFig's use case diagram generator AI interprets natural-language descriptions of system requirements — lists of actors, use cases, and their relationships — and renders a complete labeled use case diagram with the correct UML notation: stick-figure or box actors, ellipse use cases, system boundary, and include/extend dashed arrows. Describe your system at whatever level of detail you need and SciFig's use case diagram online tool produces a publication-ready figure.

Use case diagrams appear in software engineering papers describing system design and requirements, information systems research documenting application scope, human-computer interaction papers mapping user goals to system functions, healthcare IT papers documenting clinical system interactions, educational technology papers describing learning management system requirements, and any technical paper or thesis chapter that must communicate what a software system does and who uses it. SciFig's use case diagram maker AI produces figures suitable for IEEE, ACM, Springer, and Elsevier venues.