Database Schema Maker
Design ERD diagrams in minutes — no SQL required.
Map tables, define primary and foreign keys, and visualize entity relationships instantly. The fastest way to build a database schema diagram from scratch.
Everything You Need in a Database Schema Maker
Purpose-built for engineers, architects, and teams who need clean ERD diagrams fast.
AI Schema Generation
Describe your data model in plain English and get a complete entity relationship diagram with entities, attributes, and relationships generated instantly.
Primary and Foreign Key Support
Define PK, FK, UK, and composite PK/FK keys per attribute so your ERD reflects a real, production-ready schema.
Cardinality Controls
Set one-to-one, one-to-many, or many-to-many cardinality on every relationship with dropdown precision — no hand-drawing needed.
Identifying vs Non-Identifying
Distinguish identifying and non-identifying relationships to accurately represent dependency and ownership between entities.
Flexible Layout Directions
Arrange your schema top-to-bottom, left-to-right, or any cardinal direction to match how your team reads data flows.
Zoom and Pan Navigation
Explore large, complex database schemas with built-in zoom and pan so every entity and relationship stays readable at any scale.
Start Your Schema Any Way You Like
Describe It in Words
Type a plain-language description of your database and the AI generates a full ERD with entities and relationships.
Build Entity by Entity
Use the config panel to manually add tables, define attributes, and set key types — full control over every field.
Paste from a Spreadsheet
Copy column data from Excel or Google Sheets and drop it straight into the editor to populate your schema.
Upload a CSV or File
Import structured data files and let the tool auto-detect table structure for your ERD (Pro).
Share Your Database Schema Anywhere
Download as PNG or SVG
Export a crisp, high-resolution ERD image ready for documentation, presentations, or technical specs.
Share via Link
Generate a shareable link so teammates, clients, or reviewers can view your schema diagram instantly.
Embed in Your Docs
Drop a live embed code into Notion, Confluence, or your website so the ERD stays up-to-date alongside your docs.
Add to Slides
Download the diagram and paste it into PowerPoint, Google Slides, or Figma for stakeholder reviews.
About This Database Schema Maker
MakeCharts built this ERD tool for developers, data professionals, and teams who need clean database diagrams fast. It combines AI-powered schema generation with a precise, structured editor. No installation, no license fees, no design skills required.
- ✓AI generates complete ERDs from plain-language descriptions
- ✓Full control over entities, attributes, keys, and cardinality
- ✓Part of a suite of 30+ data visualization tools
- ✓Export-ready output for documentation and presentations
- ✓Free core features with no sign-up required
- ✓Used by developers, DBAs, educators, and business analysts
Built for Speed and Clarity
How to Build a Database Schema Diagram
From blank canvas to shareable ERD in three steps.
Describe or Define Your Entities
Type a natural-language description of your database or manually add entities via the config panel. The AI maps your input into a structured ERD automatically.
'A blog platform with users, posts, comments, and tags'
Refine Attributes and Keys
Edit each entity to set attribute names, data types, and key roles (PK, FK, UK). The diagram updates live as you type.
Add 'post_id INT PK' and 'author_id INT FK' to the POST entity
Set Relationships and Cardinality
Connect entities by defining the source, target, cardinality, and relationship type. Label the connection for extra clarity.
USER (1) --places--> (0+) POST — one-to-many, non-identifying
Export and Share
Download your finished database schema diagram as PNG or SVG, or generate a link to share with your team for review.
Export as SVG for embedding in technical documentation
Who Uses This Database Schema Maker
From solo developers to enterprise architects — ERD diagrams that communicate clearly.
Plan Your Data Model Before You Code
Sketch out your schema visually before writing a single migration. Catch missing foreign keys and circular dependencies early in the design phase.
Document Existing Database Structures
Reverse-engineer your current schema into a readable ERD for onboarding, audits, or handoffs — no whiteboard required.
Teach and Learn Relational Database Concepts
Create clear, annotated ERD diagrams for lectures, assignments, and study guides that make normalization and relationships visual and intuitive.
Align Stakeholders on Data Requirements
Bridge the gap between business requirements and technical implementation by presenting entity relationships in a clean, accessible format.
Templates
Start with professionally designed templates
ERD Crow's Foot Template for Database Schema Design
Start with a production-ready entity relationship diagram using crow's foot notation to map your database tables, keys, and relationships clearly.
ER Diagram Template for E-Commerce Databases
Start with a complete, production-ready entity relationship diagram covering the full e-commerce data model — from customers and orders to products and payments.
Entity Relationship Diagram Template
Instantly map your database schema with a fully editable ERD template showing entities, attributes, keys, and relationships.
Database ER Diagram with Crow's Foot Notation
A complete e-commerce database schema template using crow's foot notation to clearly show entity relationships, cardinality, and key constraints.
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.
Shopping Cart & Checkout ERD Template for E‑commerce
Visualizes users, carts, items, orders, payments, shipping, coupons, and inventory across the checkout lifecycle.
View All Templates
Browse the full library to find more templates tailored to your chart.
Why Use MakeCharts Instead of Traditional ERD Tools?
Skip the steep learning curve of legacy diagramming software.
Legacy Diagramming Tools
- ✗Complex interfaces with long onboarding
- ✗Manual drag-and-drop for every entity and line
- ✗No AI assistance — all work is manual
- ✗Expensive licenses or paywalled exports
- ✗Limited sharing options without an account
- ✗Clunky exports that require reformatting
MakeCharts Database Schema Maker
- ✓AI generates your full ERD from a text description
- ✓Clean config panel for precise attribute and key control
- ✓Identify PK, FK, and cardinality with simple dropdowns
- ✓Free to use — no license, no installation
- ✓Instant shareable links and embeddable diagrams
- ✓Export-ready PNG and SVG in one click
Frequently Asked Questions
What is a database schema maker?
A database schema maker is a tool that lets you visually design the structure of a relational database. It typically displays entities (tables), their attributes (columns), data types, key designations, and the relationships between tables — all in an entity relationship diagram (ERD) format.
Do I need to know SQL to use this ERD tool?
No SQL knowledge is required. You can describe your database in plain English and the AI will generate a complete schema diagram for you. If you prefer manual control, the config panel uses simple dropdowns and text fields — no syntax needed.
What is an entity relationship diagram (ERD)?
An ERD is a visual representation of a database schema. It shows entities (tables), their attributes (columns and types), primary and foreign keys, and the relationships between entities including cardinality (one-to-one, one-to-many, many-to-many). ERDs are standard tools in database design and documentation.
Can I use this as a free database schema generator?
Yes — the core database schema maker is completely free with no sign-up required. You can create, configure, and export ERD diagrams at no cost. Free AI credits are included with every account so you can try AI-powered schema generation right away.
How do I add primary keys and foreign keys to my ERD?
In the entity editor, each attribute has a 'Keys' field where you can select PK (Primary Key), FK (Foreign Key), UK (Unique Key), or PK+FK for composite identifiers. The diagram renders key annotations automatically once you save the attribute.
A Database Schema Maker for Everyone
- ✓No SQL or diagramming experience required — just describe what you need
- ✓Works on any device — laptop, tablet, or desktop browser
- ✓Accessible interface with clear labels and logical tab navigation
- ✓Available in 12+ languages so global teams can collaborate without friction
- ✓Free plan includes all core ERD features with no time limit
- ✓Simple enough for students, powerful enough for senior architects
Your Schema Data Stays Yours
- •Your database designs are not shared with third parties
- •We do not sell or use your schema data for advertising
- •Download or delete your diagrams at any time
- •You control what you share — links are opt-in, not public by default
- •No account required to create and export a schema diagram
Build Your Database Schema Diagram Now
From description to exportable ERD in under 2 minutes — free.