CircuitLab Hacker

  • All Hacker Lite features, plus:
  • Custom access control lists
  • Schematic revision history

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CircuitLab Pro

  • Our most popular membership option for engineers
  • Authorized for commercial use
  • See full feature list below

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(Just learning electronics? See memberships for students & educators.)

You may upgrade, downgrade, or cancel your membership at any time.
By joining, you agree to the CircuitLab, Inc. Terms of Service.
All features activate immediately.
Prices shown in USD.   Secure credit card payment via Visa, Mastercard, American Express, and Discover.

Continue your electronics journey with our growing library of video tutorials.

We've also gathered curriculum resources that cover lots of electronics topics from beginner to advanced.

Dive deep into theory and practice with our interactive textbook.

Interactive Electronics Textbook New!

Master the analysis and design of electronic systems with CircuitLab's free, interactive, online electronics textbook.

Open: Ultimate Electronics: Practical Circuit Design and Analysis

Mike, co-founder of CircuitLab

Hey there, I'm Mike! Nice to meet you.

The reality is that CircuitLab has grown to be quite popular. In just the last thirty days, y’all have run 247,720 simulations and used CircuitLab for 9,500.92 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:

  • save unlimited circuits to the CircuitLab Cloud and access them from all your devices
  • run unlimited circuit simulations anywhere, anytime
  • export sharp presentation-quality schematics as PDF/PNG/SVG/EPS
  • enjoy an ad-free, easy-to-use software experience

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!

“Smart Wires” Technology:
Build your schematic faster than ever before with our unique, intelligent Smart Wires technology for connecting terminals and rearranging components.
Smart Wires
Proprietary CircuitLab simulation engine
Proprietary Simulation Engine:
An extended-precision numerical solver core plus an advanced mixed-mode event-driven simulation engine makes it easy to get simulations running quickly.
Presentation-Quality Schematics:
Print sharp, beautiful vector PDFs of your schematics, plus export to PNG, EPS, or SVG for including schematics in design documents or deliverables.
Presentation-quality schematics
Plotting engine
Powerful Plotting Engine:
Work with multiple signals easily with configurable plotting windows, vertical and horizontal markers, and calculations on signals. Export plot images for inclusion in design documents.
Rapid Symbol Creation:
Draw generic rectangular symbols for IC or system-level wiring diagrams with just a few clicks.
Custom generic rectangular symbols
Behavioral sources and expressions
Behavioral Sources & Expressions:
Experiment and iterate rapidly with programmable algebraic sources and expressions. See documentation

CircuitLab is the best editor I have ever used. Bug-free design, excellent simulation. Well done. No more using LTSpice.

— @yigitdemirag

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.

— Pantelligent Hardware Engineering Team

Membership Levels

Hacker Lite
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. 10 items
per schematic
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)
Online documentation
"Ultimate Electronics" textbook
Community support forums
CircuitLab Enterprise Support (response within 24 hours)

Give it a try – this is a great idea.