AI SaaS ERD drafting
Turn a short description into a complete ER diagram with smart defaults for common SaaS patterns.
Chart & Visualization Tools
Design SaaS ER Diagrams
Generate a professional entity relationship diagram for your SaaS app. Start with AI or refine entities, attributes, keys, and relationships with instant preview.
Features
Why use this ERD tool
Purpose-built for SaaS data modeling with AI assistance
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.
Data input
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
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.
<2 minTime to first ERD
22+Chart styles available
12+Languages supported
NoSign-up required
Free, Starter, ProPlans
Workflow
How it works
Describe your SaaS
Tell the AI what your app manages—key entities, attributes, and how they relate.
Review entities & keys
Edit names, add attributes, and mark PK/FK/UK flags. Add comments for edge cases.
Set relationships
Choose identifying or non-identifying and apply exact cardinalities. Label relationships for clarity.
Arrange & share
Pick Left-to-Right layout, tweak font size, then export PNG/SVG or share a link/embed.
Use cases
Use cases
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 Templateerd
Visualize your E-commerce Order Management ER Diagram fast. See entities, keys, and flows from cart to delivery—share, embed, and refine in minutes.
Online Store Products & Inventory ERD TemplateerdDesign a clean Online Store Products and Inventory ERD fast. Map products, stock, orders, and suppliers to prevent stockouts and speed decisions.
Shopping Cart & Checkout ERD Template for E‑commerceerdBuild a clear Shopping Cart and Checkout Entity Relationship Diagram in minutes—align teams, reduce defects, and ship a scalable data model.
SaaS User-Team-Subscription erd Template for Clean Data ModelserdVisualize a User, Team, and Subscription SaaS ER Diagram in minutes. Map ownership, memberships, and billing with a clean, customizable model.
Multi-Tenant SaaS Database ERD TemplateerdDesign a secure, scalable SaaS schema in minutes. Map tenants, users, roles, and billing with this Multi-Tenant SaaS Database ERD Template.
CRM Contacts–Leads–Deals ERD: a clear, scalable modelerdDesign a clean CRM Contacts, Leads, and Deals ER Diagram in minutes. Clarify relationships, prevent duplicates, and speed up implementation.
Related Tools
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AI ERD MakererdCreate accurate schemas fast with our ERD maker for database design. Auto-build entities and relationships, customize layout and labels, then export or share—free online.
ERD for Postgres & MySQLerdDesign clear ER diagrams for PostgreSQL and MySQL online. AI maps PK/FK, cardinality, and layout. Free to start, customize, and export or embed in seconds.
AI ERD Diagram GeneratorerdDesign clean ER diagrams fast. Our database schema diagram tool uses AI to map entities, PK/FK keys, and cardinality. Free to start, customize layout, and export.
Comparison
Why this vs traditional tools
AI accelerates modeling and keeps diagrams consistent
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
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
FAQ
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.
Is this an online SaaS ERD tool and is it free?
Yes. You can use it online for free. Upgrade to Starter to save and embed diagrams, or Pro to create ERDs from prompts and uploaded data with priority assistance.
Can I export or embed the ER diagram?
You can download high-quality images (PNG/SVG), share a link, or embed the ERD in documentation, wikis, or dashboards.
Does it include templates or sample data for SaaS?
Yes. Start from a ready preview (Customers–Orders–Products–OrderItems) or pick templates like Users–Subscriptions–Plans. Modify them to match your application.
How is this different from generic diagramming tools?
It’s schema-aware. The editor understands entities, attributes, keys, relationships, and cardinalities, so you work faster and avoid inconsistencies common in general drawing apps.
Can I model identifying relationships like OrderItem to Order?
Yes. Mark the link as identifying to reflect that the child row’s identity depends on the parent. This clarifies constraints and improves implementation accuracy.
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
Start now
Build your SaaS ERD now
From prompt to polished diagram in minutes—free to start.
- AI draft for SaaS databases
- PK/FK/UK and cardinalities
- Left-to-Right or Top-to-Bottom layout
- Instant preview with zoom and pan
- Export PNG/SVG and share links
- Templates for common SaaS patterns
Tip: specify PK/FK, cardinalities (1..*, 0..1), and preferred layout (Left-to-Right).