LTspice is a free, high-performance SPICE simulator distributed by Analog Devices — the most widely used SPICE tool in industry for power-electronics, switching converters, and analog circuit design.
Full Pricing Breakdown
Official software licensing terms, volume discounts, educational exemptions, and renewal fees vary significantly across countries, exchange rates, and regional authorized resellers. Click below to verify real-time terms directly on the vendor portal.
Key Capabilities
Simulation
Power Electronics
Analysis
Models
Technical Audit
Compatibility & Interoperability
Trust & Support
The Pros
- Completely free — no node-lock, no per-seat
- Famously fast and stable SPICE solver
- Huge community of models and example circuits
The Cons
- Schematic editor UI is utilitarian
- No PCB layout — strictly simulation
- Documentation is sparse; learning is community-driven
CADGuide Verdict
Final Professional Conclusion
"The free SPICE that every analog engineer has installed — the industry's quietest, most-used EDA tool."
Expert Q&A
?What is LTspice used for?
Free SPICE simulator from Analog Devices, the de facto industry standard for analog design. LTspice is an EDA solution widely adopted in Electronics, Power, Education.
?How much does LTspice cost?
LTspice is completely free to download and use with no paid license required. Visit the official website for download and license terms.
?Is LTspice really free?
Yes — LTspice is a free product distributed by the vendor. You can download and use it without paying a license fee. Premium services, training, or vertical add-ons may be sold separately.
?What operating systems does LTspice support?
LTspice runs on Windows and macOS.
?Which file formats does LTspice support?
LTspice works with standard EDA interchange formats including Gerber, IPC-2581, and ODB++. Check the vendor's official documentation for the complete list of supported import and export options.
?What are the best alternatives to LTspice?
The closest alternatives to LTspice are NI Multisim, Proteus Design Suite, OrCAD. NI Multisim (offered on a Subscription license) competes directly on core Electronics workflows, while Proteus Design Suite (offered on a Perpetual license) is another top-rated option in the same category. Compare their full technical specifications, file-format compatibility, and official licensing options side-by-side on CADGuide.
