Circuit editor
Work directly in the browser without uploading the schematic.
Private · local · offline-ready
Build and understand electronic circuits.
Draw circuits, calculate RLC responses and use electronics calculators without uploading your project.
✓ No account
✓ No upload
✓ PWA
One workspace, many tasks
Draw circuits, calculate RLC responses and use electronics calculators without uploading your project.
Local analysis
Work directly in the browser without uploading the schematic.
ERC checks
Work directly in the browser without uploading the schematic.
Waveform viewer
Work directly in the browser without uploading the schematic.
Electronics calculators
Work directly in the browser without uploading the schematic.
Digital logic
Work directly in the browser without uploading the schematic.
Advertisement
Popular tools
Circuit simulator
Draw schematics, check connections and run local operating point, DC, transient and AC analyses.
Electronic schematic editor
Create clean SVG schematics, connect pins, annotate components and generate a SPICE netlist.
Online SPICE simulator
Run a safe subset of SPICE netlists locally in your browser.
SPICE netlist editor
Edit, validate and export netlists without executing system commands.
SPICE netlist viewer
Open CIR, SP, SPICE and NET files and inspect parsed devices and warnings.
Circuit analyzer
Inspect nodes, voltages, currents, components and common ERC issues.
Virtual oscilloscope
View simulated waveforms, inspect amplitude and export CSV data.
Bode plotter
Calculate magnitude and phase response for RLC circuits.
Ohm’s law calculator
Calculate voltage, current, resistance and power from two known values.
Electrical power calculator
Calculate power, energy and losses for a low-voltage circuit.
LED resistor calculator
Choose an E-series resistor and verify current and dissipation.
Resistor color code
Read and generate resistor colour bands.
Designed for learning and low-voltage electronics
The app makes the exact netlist visible and explains common topology errors. It does not certify real hardware, mains installations or product safety.