Circuit Simulator
Quick answer: Run DC, transient, and AC analysis for the documented component-model subset in your browser. Includes a schematic editor, 480+ symbols, and waveform views.
Best fit
Use this browser workflow when an editable drawing, structured electrical data, fast sharing, and common exports matter more than a native specialist desktop format.
Not the best fit
Use specialist software when the project requires native DWG intelligence, enterprise plant engineering, advanced production PCB/DFM, arbitrary vendor simulation models, certified power studies, or mechanical panel engineering.
Available capabilities
- DC operating point analysis
- Transient analysis and waveform plots
- AC frequency analysis and Bode plots
- Published component-model compatibility boundaries
Representative test
Open a relevant sample, change one component and connection, then verify the exact drawing, report, analysis, and export your job requires.
Other tools buyers evaluate
CircuitLab, Falstad, EasyEDA, LTspice. Verify each vendor’s current primary documentation before purchase; this page does not claim feature parity.
Frequently asked questions
Is this circuit simulator free and online?
Yes. You can build and simulate supported circuits free in your browser on the starter plan — no download and no signup to begin. Paid plans unlock unlimited diagrams, all 480+ symbols, and supported DC, transient, and AC analysis.
What kind of simulation does it run?
A browser-side modified nodal analysis engine with DC operating point, transient, and AC frequency analysis for supported idealized and simplified models.
Do I need to install SPICE or any software?
No. The simulator runs in a modern browser. It is not a drop-in replacement for every SPICE syntax, vendor model, or subcircuit; the compatibility matrix lists support.
Can I simulate analog and digital circuits?
Yes. Place components from the 480+ symbol library (resistors, capacitors, transistors, op-amps, logic, sources), wire them, then run DC/transient/AC analysis to see how the circuit behaves.
Can I see voltage and current waveforms?
Yes. After running a transient or AC simulation, the waveform viewer plots node voltages and branch currents over time or frequency, with Bode plots for AC sweeps.
Can I export my simulated circuit?
Yes. Export the schematic as PNG, SVG, or PDF, the bill of materials as CSV, and the netlist for use in other SPICE tools.
Is there a circuit simulator app, or is it all online?
It is a browser-based online circuit simulator — there is no separate app to download. Open it on any device, including tablets and phones, and start simulating immediately.
Does the simulator have an oscilloscope view?
Yes. The waveform viewer works like an oscilloscope: after a transient analysis it plots node voltages and branch currents against time, and AC sweeps produce Bode-style magnitude plots. You can probe any net on the schematic.
Is this a good online circuit simulator like Tinkercad?
It covers different ground. Tinkercad Circuits simulates Arduino code on a virtual breadboard; CircuitDiagramMaker simulates real schematics with a SPICE engine — standard IEC/ANSI symbols, DC/transient/AC analysis, and waveform plots. See our full CircuitDiagramMaker vs Tinkercad comparison.
Can I simulate Arduino circuits?
You can draw and electrically simulate the analog side of Arduino projects — sensor dividers, transistor drivers, RC filters, LED circuits — using the Hobbyist pack. The simulator solves circuit behaviour; it does not execute Arduino sketches.