• Free circuit design software

    Wherever you are in planning a circuit design, Lucidchart’s intuitive diagramming tools can help. Try our free circuit design software today!

    Try it now
    Sign up free
  • Circuit diagram shapes

    Lucidchart’s shapes for power sources, transistors, and logic gates follow international conventions. Each shape has a dialog box to help you customize with one click—and our lines snap into place.

    Try it now
    Sign up free

Free cloud-based software

With a free account, you can build a circuit diagram with up to 60 elements. You get the same fluid diagramming experience across all account levels, and our complete electrical engineering shape libraries are open to free users. If you need to upgrade, a trial of a premium account is completely risk-free: no credit card required!

Collaborate on circuit design

Whether you’re writing a technical proposal, building a schematic diagram, or prototyping, you can benefit from the input of colleagues during the process of circuit design. Lucidchart offers real-time collaborative editing, as well as Google Hangouts right from the canvas. You can set custom permissions for viewing, commenting, or editing.

Electrical engineering library

Our circuit diagram templates come with a huge array of circuit design shapes—different styles of resistors, transformers, voltage and current sources, and inverters, to name just a few. Our team of engineers know what icons and shapes are needed in a professional-looking circuit diagram. Lucidchart continuously adds new shape libraries: we take customer requests seriously!

A browser-based alternative

There are many options for circuit design software, some of which require downloading a program to your computer. Lucidchart runs right in your browser; it’s a lightweight solution for modern engineers. We also offer many other shape libraries. Build flowcharts, piping and instrumentation diagrams, charts using UML conventions, and more.

Import Visio circuit diagrams

If your team is looking for a Microsoft Visio alternative, Lucidchart is an ideal solution. If you have a colleague who has built a circuit diagram in Visio, import their chart into Lucidchart. Pro account users can even edit imported diagrams and download Lucidchart diagrams as VDX files. You get the benefits of a dedicated diagramming product, at a fraction of the cost.