Design, simulate, and teach electronic circuits from anywhere.
CircuitSim is a fully browser-based circuit simulation tool, no installation required. Perfect for educators teaching the next generation of engineers, students eager to learn, and professionals developing their next big idea.
🎉 We're in Open Beta!
Coming Soon: Powerful Online Circuit Design and Simulation
From learning the basics to designing advanced circuits, CircuitSim brings the essential tools for simulation and analysis together in one easy-to-use platform.
No installation required.
Modern Circuit Editor
CircuitSim combines an intuitive, drag-and-drop interface with powerful editing tools like syntax-highlighted SPICE support and clear, actionable error feedback. Whether you're teaching, learning, or designing complex circuits, the streamlined UI makes building, simulating, and teaching circuits faster, simpler, and more accessible.
Industry-Standard SPICE
Industry-standard SPICE simulation with multiple analysis types for comprehensive circuit validation — right in your browser, no installation required.
DC Operating Point Analysis
AC Small-Signal Analysis
Transient Analysis
Parameter Sweep Analysis
Monte Carlo Analysis
Noise Analysis
Comprehensive Component Library
Access 5,000+ components across 46 categories with detailed specifications and models.
Can't find what you need? Easily build your own with our custom component creator.
Modern Visualization Tools for Meaningful Insight
Visualize your data with intuitive, modern charts designed for smooth, responsive performance and clear readability. Whether you're analyzing simulation results or showcasing key metrics, built-in customization tools let you adjust every detail, from colors to scales, to match your exact needs. Create plots that not only inform but look exactly how you want them to.
Design and Discover Together, Wherever You Are
Easily share circuits with teammates or students, assign view or edit access, and manage collaboration through shared groups; all from anywhere with an internet connection.
Publish your designs to the CircuitSim community or explore what others have built. With flexible privacy options, you can keep circuits private, share with a group, or make them public with a simple link.
Bring CircuitSim to your classroom. Contact us for education access.
Where CircuitSim is Headed
CircuitSim launched private preview in Q1 2026
We're targeting a full-feature launch in July/August 2026—just in time for the Fall academic season.
If you're interested in getting early access to the platform...good news! CircuitSim is in Open Beta 🎉 — create an account, simulate circuits, and help us shape what's next.
Create accountQ1 2026
Private Preview
SPICE Netlist text editor and charting
Q2 2026
Schematic Editor
Expanded component support and drag and drop schematic editor
Summer 2026
Collaboration Features
Team and class groups with real-time collaboration tools
July/August 2026
Full Product Launch 🎉
Complete feature set ready for Fall academic season
Q1 2026
Private Preview
SPICE Netlist text editor and charting
Q2 2026
Schematic Editor
Expanded component support and drag and drop schematic editor
Summer 2026
Collaboration Features
Team and class groups with real-time collaboration tools
July/August 2026
Full Product Launch 🎉
Complete feature set ready for Fall academic season
Join Us on the Path to Launch
CircuitSim is in Open Beta — create an account and get first access to new features as we build toward launch.
Frequently Asked Questions
Find quick answers about onboarding, managing your team, and running advanced circuit simulations.
CircuitSim is currently in open beta. We plan to have a full launch in Summer 2026. Create a free account to start simulating circuits and help shape the platform.
All you need is an internet connection and a modern web browser, such as Chrome, Safari, Edge, or Firefox. CircuitSim runs entirely in the browser—no downloads or installations required.
Yes! CircuitSim offers a free tier for individual users. Paid tiers offer premium features such as an extended component library, more components per circuit, group management, and team collaboration tools.