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Design Circuits
at the Speed of Thought

The most advanced browser-based schematic editor ever built. AI analysis, real-time SPICE simulation, and professional exports — in one click.

✓ No downloads  ·  ✓ No installs  ·  ✓ Runs in your browser
4.2M+
Schematics Created
98,000+
Active Engineers
99.98%
Uptime Guaranteed
14ms
Avg. Render Time
ISO 9001
Certified Platform

Every Tool a Professional
Engineer Needs

From hobbyist to aerospace — CircuitLab Pro adapts to your workflow with unmatched depth and speed.

Real-Time SPICE Simulation
Run transient, AC sweep, and DC analyses directly in the browser. 3.6× faster than desktop tools with our WebAssembly engine.
WASM ENGINE
🤖
AI Circuit Analyst
Scans your schematic in milliseconds — detecting reversed diodes, floating pins, missing pull-ups, and 200+ common design errors automatically.
GPT-4 POWERED
📦
50,000+ Component Library
Microcontrollers, op-amps, sensors, FPGAs, RF modules — all with verified SPICE models. Updated weekly with manufacturer data.
ALWAYS UPDATED
🔗
Multi-Page Schematics
Design complex systems across unlimited pages with cross-sheet hierarchical blocks and automatic net connectivity verification.
HIERARCHICAL
📤
Pro Exports (PCB / BOM / PDF)
Export to KiCad, Altium, Eagle, or EasyEDA in one click. Generate BOM reports and print-ready PDF datasheets automatically.
MULTI-FORMAT
☁️
Real-Time Collaboration
Invite your team — live cursors, in-schematic comments, version history with instant rollback, and GitHub integration.
CLOUD SYNC
🛡️
Military-Grade Security
AES-256 encryption for all schematics. SOC 2 Type II certified. Private repos. Enterprise SSO support included.
SOC 2 TYPE II
📱
Works on Any Device
Responsive design for desktop, tablet, and mobile. Touch-optimized canvas with gesture support for iPad Pro.
CROSS-PLATFORM

Numbers That
Speak for Themselves

circuitlab.pro — Live Dashboard
98,432
Online Users
4,219,847
Schematics Saved
14ms
Avg Render
1,247,902
Bugs Caught by AI
99.98%
Uptime (90d)

Trusted by Top Professionals Worldwide

★★★★★

"Switched our entire firmware team from Eagle to CircuitLab Pro. The AI analysis alone saved us from 3 costly PCB respins. The speed is absolutely insane."

MR
Marcus R.
Senior Hardware Engineer · Tesla
★★★★★

"I've been designing circuits for 22 years. CircuitLab Pro is the first tool that feels like it was built by engineers FOR engineers. The SPICE engine is brutally fast."

SK
Sophia K.
Principal EE · SpaceX
★★★★★

"Our university lab uses CircuitLab Pro as the standard. 400+ students, zero installation issues. The collaboration features transformed how we teach circuit design."

PT
Prof. Paul T.
EE Dept. Chair · MIT
★★★★★

"As a solo maker I can't afford expensive EDA tools. CircuitLab Pro's Pro plan gives me everything Altium does for a fraction of the price. Export quality is exceptional."

JL
Jake L.
Hardware Startup Founder · YC W24
★★★★★

"The 50k component library with real SPICE models saved weeks of research. Automatic BOM generation integrated directly with our procurement system. 10/10."

AW
Amina W.
VP Engineering · Bosch
★★★★★

"Real-time collaboration is a game-changer. Our Berlin and Seoul teams now design on the same schematic simultaneously. Version history saved us after an accidental deletion."

KP
Kevin P.
CTO · Infineon Technologies

Simple, Transparent Pricing

Start free for 15 days — no credit card required.

STARTER
$0/mo
Free forever
  • 5 schematics
  • Basic library (2k parts)
  • PNG/SVG export
  • Community support
ENTERPRISE
$1200
Per seat, billed annually
  • Everything in Pro
  • Unlimited collaborators
  • SSO / SAML integration
  • Custom component libraries
  • Dedicated account manager
  • SLA 99.99% uptime

Try CircuitLab Pro FREE for 7 Days

No credit card. No commitment. Full Pro access from day one. Cancel anytime in two clicks.