AI ERD for modern SaaS schema
Generate a professional entity relationship diagram for your SaaS app. Start with AI or refine entities, attributes, keys, and relationships with instant preview.
Why use this ERD tool
Purpose-built for SaaS data modeling with AI assistance
AI SaaS ERD drafting
Turn a short description into a complete ER diagram with smart defaults for common SaaS patterns.
Schema-aware editor
Edit entities and attributes with PK, FK, and unique key flags plus optional comments for clarity.
Precise relationships
Define identifying vs non-identifying links and set exact cardinalities like 1..*, 0..1, or 0..*.
Flexible layout
Choose Left-to-Right, Top-to-Bottom, or other directions and adjust font size for readability.
Zoom and pan
Explore large models smoothly with zoom and pan controls for presentations and reviews.
Clean exports
Download sharp images, share a link, or embed the diagram without losing legibility.
Bring your data
Use AI prompt
Describe your SaaS domain and let AI draft entities, attributes, and relationships.
Type or paste
Enter entities and attributes directly with PK/FK/UK flags in the editor.
Paste table schema
Quickly map columns from a spreadsheet or DDL-style text into entities.
Start with preview
Begin from the customer–order sample and adapt it to your SaaS model.
Share and export
Download images
Export clean PNG or SVG for docs, slides, or tickets.
Share link
Create a view link to share your ERD with teammates or clients.
Embed on site
Embed the interactive diagram in dashboards, wikis, or portals.
Save & update
Keep versions, edit anytime, and refresh links without breaking embeds.
About this ERD tool
This is a focused ER diagram generator for SaaS applications. Describe your schema and get a clean ERD instantly. Edit entities, keys, and relationships with confidence. Choose layouts, preview live, and export or embed. Build models that teams understand fast.
- ✓AI-assisted SaaS data modeling
- ✓Entity, attribute, PK/FK/UK support
- ✓Identifying and non-identifying relationships
- ✓Layout direction and font size control
- ✓Zoom, pan, share links, and embeds
- ✓Fast, free start with upgrade options
Quick facts
How it works
From idea to ERD in a few steps
Describe your SaaS
Tell the AI what your app manages—key entities, attributes, and how they relate.
Example: Customers, Orders, Products; Customer.customer_id PK; Order.customer_id FK; 1 Customer to many Orders.
Review entities & keys
Edit names, add attributes, and mark PK/FK/UK flags. Add comments for edge cases.
Example: ORDER_ITEM with item_id (PK), order_id (FK), product_id (FK), quantity (int).
Set relationships
Choose identifying or non-identifying and apply exact cardinalities. Label relationships for clarity.
Example: Customer 1..* Order (non-identifying); Order 1..* OrderItem (identifying); Product 1..* OrderItem.
Arrange & share
Pick Left-to-Right layout, tweak font size, then export PNG/SVG or share a link/embed.
Example: Direction: LR; Enable zoom and pan for large models.
Use cases
Built for teams designing SaaS databases
Feature planning ERDs
Sketch and validate tables for new SaaS features—subscriptions, plans, billing, permissions—before sprint kickoff.
Source-of-truth modeling
Document the operational schema behind dashboards, metrics, and ELT pipelines for your SaaS app.
Order management schema
Model customers, orders, payments, and inventory with clear PK/FK and labeled flows for audits and PCI reviews.
Multi-tenant architecture
Design tenant, user, role, and resource models with identifying relationships and explicit cardinalities.
Templates
Start with professionally designed templates
E-commerce Order Management ERD Template
This template visualizes how customers, orders, items, payments, shipments, inventory, coupons, addresses, and returns connect across the order lifecycle.
Online Store Products & Inventory ERD Template
Visualize how products, categories, inventory, orders, customers, suppliers, and warehouses connect in one clear ERD.
Shopping Cart & Checkout ERD Template for E‑commerce
Visualizes users, carts, items, orders, payments, shipping, coupons, and inventory across the checkout lifecycle.
SaaS User-Team-Subscription erd Template for Clean Data Models
Visualizes Users, Teams, Memberships, and a single Team Subscription with clear PK/UK/FK keys, roles, and ownership.
Multi-Tenant SaaS Database ERD Template
Visualize tenants, organizations, users, roles, permissions, plans, subscriptions, and resources—covering shared vs. isolated tenancy models.
CRM Contacts–Leads–Deals ERD: a clear, scalable model
This erd visualizes how Companies, Contacts, Leads, and Deals relate, including the many-to-many link between Contacts and Deals via Deal_Contact.
View All Templates
Browse the full library to find more templates tailored to your chart.
Why this vs traditional tools
AI accelerates modeling and keeps diagrams consistent
Traditional ERD workflow
- ✗Manual drawing from scratch
- ✗Inconsistent PK/FK and naming across entities
- ✗Cardinality mistakes go unnoticed
- ✗Layouts are time-consuming to tidy
- ✗Exports are blurry or hard to maintain
AI-powered ERD workflow
- ✓Instant AI draft from a SaaS prompt
- ✓Consistent entities, keys, and labels
- ✓Explicit, validated cardinalities and types
- ✓Auto-organized layouts you can fine-tune
- ✓Crisp exports, share links, and embeds
FAQs
What is the SaaS Application ER Diagram Generator?
It’s an AI-powered ERD tool that builds a clear entity relationship diagram for your SaaS application. It focuses on entities, attributes, PK/FK/UK, relationships, and cardinalities with instant preview and easy export.
How does the AI create my SaaS ERD?
You describe your domain and the AI proposes entities, keys, and relationships using common SaaS patterns. You can edit anything—names, attributes, cardinalities, and relationship types—before exporting or sharing.
Can I mark primary keys, foreign keys, and unique keys?
Yes. Each attribute supports PK, FK, and UK flags. This makes constraints explicit and keeps your ERD aligned with the intended database schema.
How do I set relationship cardinality and type?
Select cardinalities such as exactly one, zero or one, one or more, or zero or more. Choose identifying or non-identifying to show whether the child’s PK depends on the parent.
Can I choose Left-to-Right layout and enable zoom?
Yes. Pick a layout direction (LR, RL, TB, BT), adjust font size, and enable zoom and pan to navigate large SaaS models comfortably.
Designed for everyone
- ✓Readable fonts and high-contrast visuals for clarity
- ✓Short labels and consistent naming improve comprehension
- ✓Works across devices and screen sizes
- ✓Supports 12+ languages across the experience
- ✓Keyboard-friendly controls for efficient navigation
Privacy and control
- •Your diagrams are private unless you share a link or embed
- •You control what’s saved, shared, downloaded, or deleted
- •We don’t sell your data; it’s used only to provide the service
- •AI inputs are used to generate your chart and stored only in your account if you save
- •You can export your work and remove it at any time
Build your SaaS ERD now
From prompt to polished diagram in minutes—free to start.