Top 10 Best Online ER Diagram Makers

ER diagram makers simplify tricky system designs and create clear visual layouts. They keep your structure organized from start to finish in development.

What’s best? You don’t need to install anything anymore. Online ER diagram tools let developers, architects, and teams map out system parts—like tables or connections—anywhere, anytime. That’s why we’ve rounded up the top ER diagram makers to help you pick the best one.

10 Best Online ER Diagram Makers

• Edraw.AI: All-in-one Collaboration Platform
• Draw.io: Open-source Online Diagram Maker
• Lucidchart: Ideal for Making Project Diagrams
• SmartDraw: Affordable Solution for Small Businesses
• Canva: Rich Free Resources for Commercial Users
• Visio: Easy to Collaborate with Office Suites
• Figma: Collaborative Design Tool with ER Diagram Maker
• Gliffy: Pre-built Templates Simplify Diagramming
• Cacoo: Real-Time Editing with Vast Library
• Gleek.io: Create Diverse Diagrams Quickly Online

Edraw.AI: All-in-one Collaboration Platform

Searching for the best online ER diagram tools? Give Edraw.AI a shot. Its AI features simplify diagramming, making it fast and smooth. Plus, it comes with a vast template library—think ready-made designs for any project—that sets it apart. Whether you’re in tech, education, or business, this powerful tool fits all industries perfectly.

Why You Will Love It

• You can quickly make professional ER diagrams with AI features
• Make professional-looking diagrams
• Access professionally designed templates. You can also customize them according to your needs.
• You can collaborate with your team in real time.

Pricing

• Free Trial: Available
• Subscription Plans: Starting at $6.58/month

Rating

G2 Rating: (4.5/5)

Draw.io: Open-source Online Diagram Maker

Draw.io is a free, open-source tool for creating ER diagrams. It offers an easy-to-use interface for the users. You can also integrate it with Google Drive.

Why You Will Love It

• Draw.io is entirely free with no hidden charges
• No hidden premium features
• Draw.io works flawlessly on different browsers
• Supports file formats

Pricing

Completely free

Rating

• G2 Rating: (4.5/5)

Lucidchart: Ideal For Making Project Diagrams

Lucidchart is a powerful online tool for creating ER diagrams. Business people can also use it to make event plans. Free users can create only 60 shapes. You can use it for project design and project management.

Why You Will Love It

• Lucidchart provides ready-made templates.
• The tool allows real-time collaboration.
• It comes with a switch and a drag-and-drop feature.

Pricing

1. Limited free Trial
2. Premium: Starts at only $7.95

Rating

G2 Rating: 4.5/5

SmartDraw: Affordable Solution For Small Businesses

SmartDraw stands out with its auto-generation feature, which can save time and effort. It also integrates seamlessly with GitHub. You can easily change the type of line and arrowhead to indicate relationships.

Why You Will Love It

• Generate class diagrams directly.
• Add ER diagrams to Microsoft Office, Google Workspace, and Atlassian apps.
• Access to rich, fine templates

Pricing

• Free Trial: Available
• Paid Plans: Starts at $9.95 per user/month

Rating

G2 Rating: 4.6/5

Canva: Rich Free Resources For Commercial Users

Canva stands out for its user-friendly drag-and-drop interface and vast template library. It's perfect for users who need a quick and visually appealing way. The platform offers templates, icons, and collaborative features.

Why You Will Love It

• Canva offers a range of ready-made ER diagram templates
• You can add shapes, arrows, and text effortlessly
• Share your diagrams with team members for real-time editing and feedback

Pricing

• Free Plan
• Pro Plan: For Canav Pro, you have to pay US$55

Rating

G2 Rating: 4.7/5

Microsoft Visio: Easy to Collaborate with Office Suites

The next one on our list of online ER diagram makers is Microsoft Visio Pro. It offers Office users a convenient way to create ER diagrams. It stands out for its seamless integration within the Microsoft Office ecosystem.

Why You Will Love It

• Effortlessly incorporate ER diagrams into Word, PowerPoint, and other Office tools.
• Create professional ER diagrams
• Excellent for state diagrams, use case diagrams, and activity diagrams.

Pricing

Microsoft Visio Pro is available as an add-on to Microsoft Office Pro subscriptions.

Rating

G2 Rating: 4.2/5

Figma: Collaborative Design Tool with ER Diagram Maker

If you work as a designer, you have probably heard about Figma. The platform offers cloud-based tools for real-time collaboration, allowing teams to work together seamlessly, regardless of location.

Why You Will Love It

• Work with your team in real-time with your team
• There will be no more back-and-forth file sharing.
• Access your designs from anywhere, on any device.
• Easily create interactive prototypes and share them with developers.

Pricing

Free. Premium starts at $15/month

Rating

G2 Rating: 4.7/5

Gliffy Review: Pre-built Templates Simplify Diagramming

Gliffy stands out as an easy-to-use, drag-and-drop diagramming tool. It is perfect for those who work as a team. It provides seamless cloud-based access to the users. The platform simplifies the diagramming process with pre-built templates. It's perfect for designers, developers, and product teams.

Why You Will Love It

Easily create diagrams by dragging and dropping shapes and templates

Work on diagrams simultaneously with your team and share

Download diagrams in multiple formats like PNG, JPG, and SVG.

Pricing

• Free Trial available.
• Paid plans: Start from $7.99/month.

Rating

G2 Rating: 4.4/5

Cacoo Review: Real-Time Editing With Vast Library

The company started in 2009. Cacoo enables teams to create ER diagrams, wireframes, and flowcharts collaboratively. Users can check and review changes periodically. The platform offers real-time editing and a vast library of templates.

Why You Will Love It

• Edit diagrams simultaneously with team members and track changes in real time.
• Access a variety of templates for different fields
• Export diagrams in multiple formats

Pricing

• Free Trial available (2 months).
• Paid plans: Start from $6/user/month.

Rating

G2 Rating: 4.5/5

Gleek.io: Create Diverse Diagrams Quickly online

Gleek.io revolutionizes ER diagramming making. It is faster and more efficient than traditional drag-and-drop tools. You can create org charts, flowcharts, mind maps, and other diagrams.

Why You Will Love It

• Gleek.io speeds up diagram creation by relying on keyboard shortcuts,
• The platform excels at creating different diagrams easily
• Gleek.io offers syntax help directly in the diagramming window

Pricing

• Free
• Premium starts at 6.95/ month

Rating

G2 Rating: 5/5

What to Consider When Choosing the Right One for Yourself

Choosing the right online ER (Entity-Relationship) diagram maker depends on your specific needs, whether you're a student, a developer, a database administrator, or a team collaborator. Here are the key factors to consider to ensure you pick the tool that best fits your goals:

Ease of Use

Look for an intuitive interface that allows you to create diagrams without a steep learning curve quickly. Drag-and-drop functionality, pre-built templates, and clear navigation benefit beginners or those who need to work efficiently.

Features and Functionality

Assess the tool’s core capabilities: Does it support standard ER diagram notations (e.g., Chen or Crow’s Foot)? Can it handle complex relationships, attributes, and cardinality? Advanced features like auto-layout, database schema export (e.g., SQL), or integration with other tools (e.g., GitHub, Jira) might be essential, depending on your project.

Collaboration Options

If you’re working in a team, prioritize tools with real-time collaboration, version control, and sharing options. Check if it allows multiple users to edit simultaneously or provides comment features for feedback.

Cost and Pricing Model

Determine your budget. Some tools offer free versions with basic features, while others require a subscription for premium functionalities like unlimited diagrams or cloud storage. Compare free trials or freemium tiers to see if the value justifies the cost.

Customization and Templates

A good ER diagram maker should let you customize shapes, colors, and styles to match your preferences or branding. Pre-designed templates can also save time, especially for common database designs.

Export and Integration Capabilities

Ensure the tool supports exporting diagrams in formats you need (e.g., PNG, PDF, SVG, or SQL scripts). Integration with database management systems (e.g., MySQL, PostgreSQL) or cloud platforms (e.g., Google Drive, Dropbox) can streamline your workflow.

Ending Notes

This list will help you find the best online diagram creators. The online diagram makers come with unique and advanced features. It will help you create impressive presentations of complex works. All you need to do is check the features and price to select the right one.