Power Electronics Calculators

Power Converters & Conversion Calculators

A comprehensive suite of calculators for electronics, battery, power, and conversion tasks.
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All Ohm's Law & Power Converters Electrical Systems & Analysis Components Circuit Analysis Unit Conversions Battery

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sin

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Ohm's Law & Power

Power Calculator

Calculate power from voltage and current or resistance.

P = V × I

Voltage Calculator

Find voltage from current and resistance or power.

V = P ÷ I

Current Calculator

Calculate current from voltage, resistance, or power.

I = V ÷ R

Resistor Calculator

Find resistance using Ohm's Law or color code.

R = V ÷ I

Power Converter Calculators

Buck Converter

Step-down DC-DC converter design and analysis.

Vin > Vout

Boost Converter

Step-up DC-DC converter design and analysis.

Vin < Vout

Buck-Boost Converter

Design buck-boost DC-DC converter circuits.

Vin ≶ Vout

Cuk Converter

Cuk converter design and performance calculator.

Inverted Output

SEPIC Converter

SEPIC converter design and simulation.

Non-Inverted

ZETA Converter

ZETA converter design and simulation.

Dual Inductor

Electrical Systems & Analysis

Transformer Calculator

Calculate transformer turns ratio, voltage, and current.

RMS Voltage Calculator

Calculate RMS (effective) voltage from peak values.

Three-Phase Power Calculator

Calculate three-phase power in delta and wye configurations.

Energy & Efficiency Calculator

Calculate energy consumption and system efficiency.

Advanced Motor Calculator

Calculate motor power, torque, speed, and efficiency.

Frequency Calculator

Calculate frequency (Hz) from time period or other parameters.

R-C Time Constant Calculator

Calculate the time constant (τ) for resistor-capacitor (RC) circuits.

Power Factor Calculator

Calculate power factor, reactive and apparent power.

Component Calculators

Resistor Color Code

Decode resistor color bands for value and tolerance.

SMD Resistor Code Calculator

Decode SMD resistor codes and markings.

SMD Capacitor Code Calculator

Decode SMD capacitor codes and values.

Series/Parallel Resistor

Calculate total resistance for series/parallel networks.

Series/Parallel Capacitor

Calculate total capacitance for series/parallel networks.

LED Series Resistor Calculator

Calculate current limiting resistor for LEDs.

Circuit Analysis

Voltage Divider Calculator

Design and analyze voltage divider circuits.

Capacitor voltage Divider Calculator

Design and analyze Capacitor voltage divider circuits.

Current Divider Calculator

Calculate current distribution in parallel circuits.

KVL and KCL Calculator

Apply Kirchhoff's Voltage and Current Laws to solve circuits.

Mesh Analysis Calculator

Solve complex circuits using mesh current analysis method.

Thevenin Equivalent Circuit

Find Thevenin voltage and resistance for circuit simplification.

Unit Conversions

Power Unit Conversion

Convert between different power units.

Current Unit Conversion

Convert between different current units.

Voltage Unit Conversion

Convert between different voltage units.

Energy Unit Conversion

Convert between different energy units.

Inductance Unit Conversion

Convert between different inductance units.

Capacitance Unit Conversion

Convert between different capacitance units.

Battery Calculators

Battery Charging Time

Estimate charge time for any battery and charger.

Battery Pack Design New

Design custom battery packs and get BMS recommendations.

Battery Discharge Calculator New

Calculate discharge time and current drain for batteries.

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