Apps Like Circuit Lab for iPhone and iPad
Circuit Lab screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.



Circuit Calculator
Neil Woodcock
Build, simulate, and solve circuits
Build and simulate linear AC and DC circuits by dragging and rotating components. Calculate steady-state voltages and currents. View real-time DC current flow and review results with detailed analysis. Export schematics and solution data.



Ohms Law Calc.
V PUGAZHENTHI
Calculate voltage, current, and resistance
Calculate electrical values using formulas for voltage, current, resistance, power, and more. Determine wire size and voltage drop. Perform transformer and generator calculations. Convert between electrical units.

Southwire® Voltage Drop Calc
Southwire Company
Calculate and wire size
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.

Breadpad - SPICE Simulator
FreshBizOpps, LLC
Simulate circuits and analyze signals
Simulate electronic circuits with engine and virtual instruments. Add components to a breadboard and connect them. Analyze signals using oscilloscope and logic analyzer. Export simulation data. Create or customize electronic parts.

Electrician Handbook — Basics
Sergey Vavaev
Access theory, diagrams, and calculators offline
’s provides access to electrical theory topics, including exercises with answers. Features interactive diagrams for hands-on learning. Includes calculators and formulas for electrical calculations. Works offline without ads or subscriptions.

Tinkercad
Autodesk
Design 3D models, circuits, and code
Create 3D models using intuitive device-optimized controls. Design circuits, code, and simulate electronic components. Learn through hands-on projects. Access free, ad-free tools suitable for all ages.

Circuitry - 3D Circuit Builder
Raffael Kaehn
Build 3D circuits and analyze results
Build and simulate 3D electrical circuits with real-time voltage and current calculations. Drag and drop components to create custom circuits. Analyze results instantly with detailed visual feedback. Export schematics and share designs.


iCircuit 3D
Krueger Systems, Inc.
Design and test electronics projects in 3D
Design and test electronics projects in a virtual workspace. Simulate circuits using over 150 components and 1,000 reference boards. Adjust 3D models and view physics-based interactions. Export project data and share designs.

Mike Holt's Electrical Toolbox
Mike Holt Enterprises Inc.
Size conductors, calculate voltage drop, select circuit
Provides conductor sizing calculations, circuit protection sizing, raceway sizing, and equipment grounding conductor sizing for heating and air-conditioning equipment.

Power Electronics
Forwa Elade Wunde
Quiz on topics
Learn about through quizzes on topics like Semiconductor Switches, Rectifiers, and Control System Essentials. Test knowledge with interactive questions. Track progress and review answers for each topic.

Ugly's Electrical References
Informed Publishing
Access code tables and track updates
Access code updates for 2023 NEC and NEMA standards. View table changes, formulas, and conduit bending guides with video tutorials. Calculate ampacity and conduit fill. Include transformer data and wiring configurations.

Electrical Calculator
V PUGAZHENTHI
Calculate values instantly
Provides tools for and electronics calculations. Users can compute resistance, voltage, current, and power. Includes resistor color code conversion and voltage drop calculations aligned with NEC/IEEE standards. Supports USCS and SI units.

VoltSim - circuit simulator
Sindhu Gopi
Design circuits and simulate electric or digital
Design and simulate electronic circuits with components like resistors, capacitors, and transistors. View voltage, current, and signal data in real time. Use oscilloscopes and multimeters for measurement. Adjust and test circuits dynamically.

Simple Circuit Builder
David White
Measure voltages and calculate resistance
Learn about resistors and resistance with interactive simulations. Configure up to eight component sections. Measure voltages across resistors and current through series and parallel circuits. Solve electrical circuits.

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