Electricity Converters
- Charge Converter
- Linear Charge Density Converter
- Surface Charge Density Converter
- Volume Charge Density Converter
- Current Converter
- Linear Current Density Converter
- Surface Current Density Converter
- Electric Field Strength Converter
- Electric Potential Converter
- Electric Resistance Converter
- Electric Resistivity Converter
- Electric Conductance Converter
- Electric Conductivity Converter
- Electrostatic Capacitance Converter
- Inductance Converter
About Electricity Converters
Electrical engineering and electronics depend on a family of interrelated physical quantities — charge, current, potential, resistance, conductance, capacitance, and inductance — each with its own SI and legacy CGS units. UnitConvertersLab's Electricity Converters bring together fifteen specialized calculators covering the electrical quantities students, electricians, and electronics engineers work with every day: charge, linear/surface/volume charge density, current, linear/surface current density, electric field strength, electric potential, resistance, resistivity, conductance, conductivity, electrostatic capacitance, and inductance.
Charge (coulomb) and its density variants describe how much electric charge is present or how it's distributed across a length, area, or volume — fundamental to capacitor design and electrostatics. Current (ampere) and current density describe the flow of charge — essential for wire sizing and circuit analysis. Electric Field Strength and Electric Potential (voltage) describe the force and energy associated with charge, tied together through Ohm's law with Resistance and Conductance (and their per-length/per-area cousins, Resistivity and Conductivity), which describe how strongly a material opposes or permits current flow.
Electrostatic Capacitance (farad) measures a component's ability to store electric charge, central to capacitor selection in power supplies, filters, and timing circuits. Inductance (henry) measures a component's opposition to changing current, central to designing inductors, transformers, and motor windings. Together, these fifteen converters cover virtually every electrical unit conversion an engineer, technician, or student is likely to need.
Every converter on this page works the same way: pick a "from" unit and a "to" unit from the dropdown lists, type in a value, and get an instantly calculated, high-precision result — up to 12 significant digits — with no account required and nothing to install. Each tool is optimized for desktop and mobile alike, so you can pull up a quick conversion in the lab, the classroom, or on the job site.
These categories were chosen because electrical engineering literature mixes modern SI units with a wide range of historical CGS-EMU and CGS-ESU units (abampere, statvolt, abohm, statmho, and more) that still appear in older textbooks, physics references, and some international standards — getting these conversions right is essential for correctly interpreting legacy documentation and cross-checking calculations across unit systems.
Important electrical units you can convert:
- Voltage (Volts)
- Current (Amperes)
- Charge (Coulombs)
- Resistance (Ohms) and Conductance (Siemens)
- Capacitance, Inductance, and more
We aim to help you save time and avoid calculation errors with tools you can trust, anytime and on any device.
Frequently Asked Questions — Electricity Converters
Question: What electrical units can I convert?
Answer: Electricity Converters cover voltage (V, mV, kV), current (A, mA, µA), power (W, kW, MW), resistance (Ω, kΩ, MΩ), capacitance, inductance, conductance, charge, electric field strength, and more — all the units used in electronics, electrical engineering, and circuit design.
Question: How do I convert watts to kilowatts?
Answer: Divide the wattage by 1,000 to get kilowatts. 1 kW = 1,000 W. For example, 2,500 W = 2.5 kW. Conversely, multiply kilowatts by 1,000 to get watts.
Question: What is Ohm's law?
Answer: Ohm's law states that voltage (V) equals current (I) multiplied by resistance (R): V = I × R. It is the fundamental relationship in electrical circuits. If you know any two values, you can calculate the third — for example, R = V / I or I = V / R.
Question: How do I convert amperes to milliamperes?
Answer: Multiply amperes by 1,000 to get milliamperes. 1 A = 1,000 mA. For example, 0.5 A = 500 mA. To convert milliamperes back to amperes, divide by 1,000.
Question: What is the difference between volt-amperes and watts?
Answer: Watts (W) measure real power — the actual energy consumed by resistive loads. Volt-amperes (VA) measure apparent power in AC circuits, which includes both real power and reactive power. For purely resistive loads, W = VA. For circuits with capacitors or inductors, VA > W, and the ratio is the power factor.