LTspice
Fast • Free • Unlimited
LTspice® is high performance SPICE simulator software, including a graphical schematic capture interface. Schematics can be probed to produce simulation results—easily explored through LTspice’s built-in waveform viewer. LTspice’s enhancements and models improve the simulation of analog circuits when compared to other SPICE solutions.
Download LTspice
Download our LTspice simulation software for the following operating systems:
Date models updated - Sep 30 2022
Version 17.0.35
Version 17.0.35
Version 17.0.42
Download for MacOS 10.9 (End of Support)
Download for Windows XP (End of Support)
Get Support
Visit the LTspice Forum in EngineerZone to ask questions (or answer them) or add comments about LTspice.
Find Demo Circuits
Explore the entire library of ready-to-run LTspice demonstration circuits.
Learn How to Use LTspice
Instructional Videos
Getting Started Tutorial
Learn about LTspice and how to use it. This video series includes an introduction to the LTspice schematic capture program via layout of a simple circuit.
Essentials Tutorial
Learn how to use transformers, add third party models, create, work with symbols, and more.
AC & Noise Analysis Tutorial
Learn how to perform a basic AC analysis in LTspice as well as some capabilities you might not already know about. Also learn how to set up a noise simulation in LTspice to view both input and output referred voltage noise.
Tips and Articles
Get Up and Running with LTspice
The key to most circuit designs is the speed with which you can reach an understanding of your circuit, its correctness, and its limitations. LTspice outperforms many other simulation tools and enables you to iterate your designs in minimal time.
Tips and In-Depth Articles
Our extensive collection of technical resources tackles a wide range of LTspice topics.
Keyboard Shortcuts
Keyboard shortcuts are an alternate way to invoke one or more commands in LTspice that would otherwise only be accessible by clicking through the menu or toolbar.