Electrical Engineering Calculators & Circuit Simulators
Free electrical engineering calculators and simulators for circuits, AC analysis, capacitors, inductors, electronics, semiconductors, power converters, and digital systems.
Explore Electrical Engineering
Use browser-based electrical engineering calculators to analyze introductory circuits, AC networks, reactive components, analog and digital electronics, semiconductor devices, and power converters.
The workbenches combine equations, diagrams, plots, and design-oriented calculations so students can move from a circuit concept to a quantitative result in one place.
Common topics
- Ohm’s law
- series and parallel circuits
- RLC circuits
- AC circuit analysis
- capacitors and inductors
- analog electronics
- digital electronics
- buck and boost converters
Practice instrumentation and measurement in the browser
The Virtual Instrumentation & Measurement Lab adds experiment setup, measurements, theory, validation, and engineering interpretation to the existing electrical workbenches. Nine available experiments cover a voltage divider, oscilloscope, function generator, DMM, bench supply, RC/RL time constants, RLC resonance, and realistic measurement error. Guided questions are automatically graded, and settings and results can be exported.
Analyze experimental data and uncertainty
Import CSV measurements, inspect distributions and regression residuals, build Type A/B uncertainty budgets, and compare analytical sensitivities with seeded Monte Carlo. Original data and exclusion decisions remain visible.
Explore traveling waves and high-frequency design
Use Smith charts, design matching networks, inspect Touchstone S-parameters, trace receiver noise, and investigate microstrip geometry and waveguide cutoff.
Electrical Engineering tools
Open a calculator, simulator, visualizer, or reference workbench.
AC Circuits Workbench
Free AC circuit calculators for impedance, phasors, RLC circuits, resonance, real and reactive power, power factor, transformers, and frequency response.
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Analog Electronics Workbench
Study op-amp feedback, summing and differential stages, active filters, comparators, transistor amplifiers, instrumentation amplifiers, and oscillators.
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Capacitors and Inductors Workbench
Learn electric and magnetic energy storage through capacitor and inductor networks, physical geometry, dielectrics, transients, reactance, coupling, and LC resonance.
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Digital Electronics Workbench
Learn logic gates, Boolean expressions, binary arithmetic, adders, multiplexers, flip-flops, counters, timing, ADCs, DACs, and PWM.
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DIY Power System Designer
Plan, simulate, document, and export a small off-grid, backup, mobile, workshop, or experimental power system from one shared load list: compare 12 V/24 V/48 V/higher-voltage DC architectures; screen…
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Electrical Engineering Design Workbench
Size and compare conductors, calculate voltage drop and cable loss, and solve DC, single-phase, and balanced three-phase power without jumping between reference charts.
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Electronics Component Library & Design Center
Browse major electronic component families, compare curated real parts with manufacturer datasheets, assemble guided reference circuits, and use an interactive functional circuit builder with drag…
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Introductory Circuits Workbench
Free electrical circuit calculators for Ohm’s law, series and parallel resistors, voltage dividers, Kirchhoff analysis, power, source conversion, and basic DC circuits.
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Power Electronics Workbench
Free power electronics calculators for buck, boost, buck-boost and flyback converters, ripple, switching losses, efficiency, device stress, and thermal estimates.
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Semiconductor Devices Workbench
Learn diode, Zener, LED, rectifier, BJT, MOSFET, transistor-switching, and semiconductor thermal behavior through guided operating-point models.
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