CircuitLab
CircuitLab provides in-browser schematic capture and circuit simulation for students, hobbyists, and professional engineers.
What CircuitLab is
CircuitLab provides in-browser schematic capture and circuit simulation for students, hobbyists, and professional engineers. It supports analog, digital, and mixed-mode simulation, as well as frequency-domain analysis and parameter sweeps. Users can import SPICE device models and use CSV files as signal sources. Schematics can be exported as PDF, PNG, EPS, or SVG, and each circuit can have a unique URL for sharing a design or asking for help. CircuitLab runs on Windows, Mac OS X, and Linux, and its membership information describes browser use on iPad. It can work offline through the Chrome Web Store, and access is SSL-encrypted. Listed plans include Micro at $24 a year, Hacker Lite at $16 a month, Hacker at $26 a month, and Pro at $39 a month. Commercial use is permitted with Pro and Enterprise subscriptions; otherwise, terms describe use as personal and non-commercial unless otherwise specified. CircuitLab offers online documentation and community forums. Its terms do not authorize use of schematics or simulations in safety-critical applications such as life support, medical devices, or nuclear control systems.
Good
- Free plan available
- Supports analog, digital, and mixed-mode simulation
- Exports schematics as PDF, PNG, EPS, or SVG
- Unique circuit URLs support sharing
- Works offline through the Chrome Web Store
Watch out
- Commercial use requires Pro or Enterprise
- Safety-critical applications are not authorized
Who it suits
CircuitLab suits students, hobbyists, and engineers who need browser-based schematic capture and circuit simulation. It is not authorized for safety-critical applications, and commercial use requires a Pro or Enterprise subscription unless otherwise specified.
Verdict
CircuitLab pairs schematic design with several simulation modes and shareable circuit links. Review its personal and non-commercial use terms and safety-critical limitation before relying on it for a project.
Plans and prices
From CircuitLab's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| CircuitLab Hacker Lite | $16 a month | For hobbyists · $16 / month |
| CircuitLab Micro | $24 a year | 10 items per schematic · $24 / year |
| CircuitLab Hacker | $26 a month | Custom access control lists · Schematic revision history · $26 / month |
| CircuitLab Pro | $39 a month | Commercial use · For engineers · $39 / month |
| CircuitLab Hacker Lite | $79 a year | For hobbyists · $79 / year |
| CircuitLab Hacker | $129 a year | Custom access control lists · Schematic revision history · $129 / year |
| CircuitLab Pro | $399 a year | Commercial use · For engineers · $399 / year |
| CircuitLab Student Edition | $2,400 a year | Official .EDU email required · Paid school subscription required · $2,400/year site license |
| CircuitLab Enterprise | Priced on request | 10-seat minimum · Team license management · Pay by PO, check, wire transfer · Contact Us |
The facts
Each one read from CircuitLab's own pages, with the date it was checked.
What it does
- AI data
- The terms say prompts, related content, context, and generated responses from AI features may be used to develop and improve those features, including training models, and may be shared with AI providers.checked 11 Oct 2026
- Commercial use
- The terms say use is personal and non-commercial unless otherwise specified, and that Pro and Enterprise subscriptions allow commercial use.checked 11 Oct 2026
- Integrations
- The feature list says users can import SPICE device models and use CSV files as signal sources.checked 11 Oct 2026
- Offline access
- The membership feature list says CircuitLab works offline via the Chrome Web Store.checked 11 Oct 2026
- Privacy
- The privacy policy says CircuitLab may collect account information, cookies, request logs, communications, user content, and billing information.checked 11 Oct 2026
- Purpose
- CircuitLab provides in-browser tools for schematic capture and circuit simulation for students, hobbyists, and professional engineers.checked 11 Oct 2026
- Safety limit
- The terms do not authorize use of CircuitLab schematics or simulations in safety-critical applications such as life support, medical devices, or nuclear control systems.checked 11 Oct 2026
- Schematics
- Users can export presentation-quality schematics as PDF, PNG, EPS, or SVG.checked 11 Oct 2026
- Security
- The membership feature list describes access as SSL-encrypted.checked 11 Oct 2026
- Sharing
- CircuitLab provides unique circuit URLs for sharing designs and asking for help online.checked 11 Oct 2026
- Simulation
- It supports analog and digital simulation, including mixed-mode simulation, frequency-domain analysis, and parameter sweeps.checked 11 Oct 2026
- Support
- CircuitLab directs users to online documentation and community support forums; Enterprise support is listed with a response within 24 hours.checked 11 Oct 2026
Money
- Free use
- The pricing page says upgrading helps keep CircuitLab's core functionality free.checked 11 Oct 2026
Where it runs
- Platform
- The membership feature list says CircuitLab runs on Windows, Mac OS X, and Linux, and works on iPad in a browser.checked 11 Oct 2026
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