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All features activate immediately.
We've also gathered curriculum resources that cover lots of electronics topics from beginner to advanced.
Master the analysis and design of electronic systems with CircuitLab's free, interactive, online electronics textbook.
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The reality is that CircuitLab has grown to be quite popular. In just the last thirty days, y’all have run 398,427 simulations and used CircuitLab for 13,148.42 hours. Wow! (Hit refresh — these stats update every 60 seconds )
As a result, it takes substantial time and talent to develop, maintain, and support our infrastructure 24/7. Paid individual memberships (plus academic site licenses sold to schools and universities) keep CircuitLab up and running.
CircuitLab membership also allows you to:
As many of our users are still learning electronics, we’re also building the first online, interactive electronics textbook: Ultimate Electronics: Practical Circuit Design and Analysis which includes hundreds of CircuitLab example circuits and simulations. It's included with your CircuitLab membership.
Choose a membership level that works best for you. Thank you and welcome!
“ CircuitLab is the best editor I have ever used. Bug-free design, excellent simulation. Well done. No more using LTSpice. ”
“ In our product development cycle, we've used CircuitLab in more places than you might expect: optimizing our analog front-end, RF matching network analysis, improving our power supply robustness, and designing and documenting test and production fixtures. ”
|Unlimited CircuitLab editor usage|
|Upgrade, downgrade, or cancel at any time|
|OK for non-commercial use (hobby & educational) (?)|
|OK for commercial use (?)|
|Schematic Capture & Storage|
|Unlimited saved circuits|
|Unlimited schematic size & component count||max. 30 items
|Public, private, and unlisted access control|
|Share schematics & simulations with a URL|
|Export schematics to PDF, PNG, EPS, SVG|
|Presentation-quality vector images & print-outs|
|“Smart Wires” technology for fast, painless schematic entry|
|Diagramming tools, e.g. text, rectangles, arrows, colors, image upload, and more|
|Rapid rectangular generic symbol tool for adding components|
|Custom access control lists|
|Schematic revision history|
|Unlimited simulations, CPU time, and data points|
|Extended-precision numerical core for improved convergence|
|DC steady-state simulation|
|Non-linear time domain simulation|
|Frequency domain simulation|
|Device parameter sweep in simulation runs|
|Algebraic global parameter evaluation|
|Unit-aware plotting with configurable multiple graphs, axes|
|Interactive signal plotting with markers & math|
|Export signal plots to images & CSV files|
|Complex frequency-domain plotting, e.g. Bode plots|
|Analog & Digital Device Models|
|Standard linear elements & signal sources|
|Signal source function generators|
|Algebraically-defined component values|
|Library of common diodes, BJTs, MOSFETs, JFETs, Op-Amps, and more|
|Relays, switches, pushbuttons, batteries|
|Custom device parameter entry|
|Per-user custom device library|
|Import SPICE device models for BJTs, MOSFETs, Diodes|
|Algebraically-defined behavioral sources|
|Piecewise-linear and piecewise-step signal sources|
|CSV file input as signal source|
|Arbitrary Laplace Transform blocks for filter design|
|Digital Device Models|
|Standard digital gates, clocks, registers, etc.|
|Event-driven digital simulation|
|Full mixed-mode analog & digital co-simulation|
|Convenient mixed-mode blocks, e.g. PWM generator|
|Access & Compatibility|
|Ad-free web app experience|
|Cloud storage for schematics; accessible anywhere|
|Secure SSL-encrypted access|
|No software installation required|
|Automatic software updates|
|Runs on Windows, Mac OS X, and Linux|
|Runs on iPad (in browser)|
|Works when offline (via Chrome Web Store)|
|"Ultimate Electronics" textbook|
|Community support forums|
|CircuitLab Platinum Support (response within 24 hours)|
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To inquire about floating licenses, site licenses, or group purchases of CircuitLab Pro or Platinum (25+ seats at your company), please email us at .