Relationship Diagram Maker

Create professional relationship diagrams to visualize connections and relationships with our free online tool.

Add Entities
Entity Name Color Actions
Getting Started
1
Add Entities

Enter an entity name and click the "+" button to add it to your diagram.

2
Define Relationships

Switch to the "Relationships" tab to define how entities are connected.

3
Generate Diagram

Click the "Generate Diagram" button below to visualize your relationships.

Add Relationships
Source Target Relationship Color Actions

Supported formats: JSON, CSV

// JSON Example: { "entities": [ {"name": "Person", "color": "#2c7da0"}, {"name": "Company", "color": "#a9d6e5"}, {"name": "Project", "color": "#01497c"} ], "relationships": [ {"source": "Person", "target": "Company", "type": "works for", "color": "#2c7da0"}, {"source": "Person", "target": "Project", "type": "manages", "color": "#a9d6e5"}, {"source": "Company", "target": "Project", "type": "sponsors", "color": "#01497c"} ] }

Create Your First Relationship Diagram

Add entities and relationships to generate your diagram

Diagram Appearance
Relationship Customization
Export Options

About Relationship Diagrams

Relationship diagrams (also known as entity-relationship diagrams or network diagrams) are visual representations that show how different entities relate to each other. They are essential for understanding complex systems, database design, and organizational structures.

Best Practices: Use clear and concise labels. Use consistent styling for similar entities. Limit the number of entities to prevent clutter. Use color to differentiate relationship types.

When to Use Relationship Diagrams

  • Database Design: Visualize entity relationships
  • Organizational Charts: Show reporting structures
  • Social Networks: Map connections between people
  • Business Processes: Illustrate workflows
  • System Architecture: Show component relationships

Relationship Diagram Design Tips

  • Clear Labels: Label all entities and relationships
  • Color Coding: Use color to differentiate entity types
  • Consistent Sizing: Keep node sizes consistent
  • Limit Entities: Keep the number of entities manageable
  • Relationship Direction: Make relationship direction obvious
  • Value Labels: Add labels to significant relationships

Common Relationship Diagram Applications

Application Description Example
Database Design Visualize entity relationships ER diagrams for database schema
Organizational Charts Show reporting structures Company hierarchy diagrams
Social Networks Map connections between people Social media connections
Business Processes Illustrate workflows Process flow diagrams
System Architecture Show component relationships Software architecture diagrams

Relationship Diagram Examples

Person
Company
Project
works for
manages
sponsors

Organizational Relationships

Customer
Order
Product
places
contains
belongs to

E-commerce Relationships

Where Relationship Diagrams are Used

  • Database Design
  • Organizational Structures
  • Social Network Analysis
  • System Architecture
  • Business Process Mapping