Everything you need
to build and test electronics.
CircuitForge combines a professional MNA physics engine with a beautiful, game-like 3D interface.
Intuitive 3D Workbench
Ditch the flat schematics. CircuitForge gives you a true 3D canvas where you can orbit, pan, and place components just like on a real physical breadboard. Every part is beautifully modeled.
Real-Time SPICE Physics
Powered by a custom Modified Nodal Analysis (MNA) engine. Currents, voltages, and resistance are calculated accurately in real-time, handling complex loops, parallel paths, and short circuits.
Diverse Components
From basic resistors and batteries to logic gates, transistors, and motors. Build everything from a simple LED flasher to an H-bridge motor driver, with more components added regularly.
AI Circuit Assistant
Stuck on a problem? Ask the AI. CircuitForge integrates Gemini to analyze your current circuit and give you hints on why a component might not be working or how to improve your design.
Instant Templates
Don't start from scratch if you don't want to. 15 pre-built templates help you instantly load common circuits like voltage dividers, RC delays, logic gates, and transistor switches.
Save, Share & Export
Sign in to save your circuits forever. Generate a public link to share your creation with peers or students, or download the full open-source React code to run it locally.
Experience the difference.
Stop drawing lines on a screen and start putting real 3D components on a board. It's free, it runs in your browser, and it requires no download.
Start Building Now