Paste SQL, get structure fast
Import DDL into the canvas and start from an existing schema instead of redrawing every table by hand.
Free ERD generator for SQL and legacy databases
Turn SQL and inherited schemas into ERD diagrams you can actually understand.
DataPilot ERD helps engineers, analysts, architects, and product teams convert SQL into a visual schema, inspect legacy databases faster, isolate related tables, and share one clear ERD workspace for review.
PostgreSQL
MySQL
SQL Server
Oracle
SQL to ERD
Shared workspaces
Untangle legacy databases
Use the visual view to understand inherited schemas, follow table relationships, and reduce onboarding time.
Share one diagram, not five screenshots
Open the same workspace with reviewers, keep notes close to the model, and discuss structure in one place.
Why teams use it
A practical ERD workspace, not just another empty canvas.
Use DataPilot ERD when you need to understand an inherited schema, explain a design to teammates, or model a database before it exists. The tool stays fast and free, while giving you enough structure to actually move work forward.
Start from scratch
Create tables, fields, and relationships manually when you are designing a new system or validating a domain model with stakeholders.
Import SQL instantly
Paste CREATE TABLE scripts and generate a first ERD automatically to reverse engineer legacy schemas or onboard new engineers faster.
Share one workspace link
Open a shared diagram with named presence, a single active editor, and revision-based refresh so reviews stay lightweight and controlled.
Why this free tool matters
Use the ERD workspace to understand structure before the rest of the data stack.
Start with the free ERD workspace when you need to map a schema, explain relationships, or review a design quickly. When the problem moves beyond diagrams into collaborative SQL workflows and trusted business access, the main DataPilot platform takes over.
- Sketch new schemas, import old SQL, and keep one diagram that is easy to share in technical reviews.
- Use the feature pages below to land directly on the workflow that matches the job to be done.
- Move to DataPilot when the team also needs collaborative SQL workspaces, delivery workflows, and broader data collaboration.
Free ERD site
Visual schema design and review
Open the browser designer, map tables and relationships, save JSON, and share one diagram link with the team.
DataPilot platform
Team data work after the ERD phase
Bring the schema context into collaborative SQL workspaces, scheduled outputs, and trusted business access when the work moves beyond modeling.
Feature pages
Follow the feature path that matches your job to be done.
ERD diagram generator
Broad overview page for database design, schema modeling, and online ERD editing.
Automatic ERD from SQL
Focused page for reverse engineering DDL scripts into a visual diagram.
Schema visualizer
Page dedicated to inherited schemas, onboarding, and table relationship mapping.
Collaboration
Sharing, review, editor handoff, and revision updates in one lightweight workspace.
Database docs
ERD-first documentation, notes, and shared schema references.
FAQ
Common questions about the free ERD tool.
Is DataPilot ERD free?
Yes. The standalone ERD designer is a free product layer for schema design, SQL import, and lightweight collaboration.
Can I import SQL scripts?
Yes. The parser supports CREATE TABLE style scripts for PostgreSQL, MySQL, SQL Server, and Oracle so you can generate a first diagram quickly.
Is this full realtime co-editing?
No. The collaboration model is intentionally lightweight: one active editor, multiple viewers, handoff requests, and revision-based updates.
How does this relate to DataPilot?
DataPilot ERD is the free entry point. The main DataPilot platform adds collaborative workspaces, business data flows, and broader collaboration around trusted company data.