Electrical Unit Converter
Convert between volts, amperes, ohms, watts, farads, henries, and more electrical units instantly.
About Electrical Unit Converter
Our Electrical Unit Converter is a comprehensive tool designed for engineers, technicians, students, and hobbyists who work with electrical measurements. It provides accurate conversions across a wide range of electrical units including voltage, current, resistance, capacitance, inductance, power, electric charge, and conductance.
Whether you're designing circuits, troubleshooting electrical systems, or studying electronics, this tool helps you quickly convert between metric prefixes and different units with high precision. All conversions are calculated using standard SI unit relationships and displayed instantly as you type.
Convert From
How to Use
Enter the Electrical Value
Type the numerical value you want to convert in the "Electrical Value" field. You can enter whole numbers, decimals, or negative values where applicable. The input accepts any valid number.
Select the Measurement Category
Choose the type of electrical measurement you're working with from the "Measurement Category" dropdown. Options include Voltage, Current, Resistance, Capacitance, Inductance, Power, Electric Charge, and Conductance. The available units will update automatically.
Select the Original and Target Units
Choose the unit of your input value from the "From Unit" dropdown and the unit you want to convert to from the "To Unit" dropdown. Use the "Swap Units" button to quickly reverse the conversion direction.
View Results
Click "Convert" to see the result. The tool will display the converted value, the conversion formula used, and all possible conversions from your original value to every unit in the selected category.
Common Conversions
Quick links to frequently used electrical conversions. Click any link to see the instant result.
Frequently Asked Questions
What electrical units does this converter support?
Our converter supports 8 measurement categories with multiple units each: Voltage (volts, millivolts, kilovolts, megavolts, microvolts), Current (amperes, milliamperes, microamperes, kiloamperes), Resistance (ohms, milliohms, kiloohms, megaohms), Capacitance (farads, millifarads, microfarads, nanofarads, picofarads), Inductance (henries, millihenries, microhenries), Power (watts, milliwatts, kilowatts, megawatts, horsepower), Electric Charge (coulombs, millicoulombs, microcoulombs), and Conductance (siemens, millisiemens, microsiemens).
How precise are the conversions?
Our converter uses high-precision mathematical calculations and displays results with up to 10 decimal places. All conversions are based on standard SI unit relationships. For most practical applications, 2-6 decimal places are sufficient. You can round the result as needed for your specific use case.
What is the relationship between volts, amperes, and ohms?
Volts (V), amperes (A), and ohms (Ω) are related by Ohm's Law: V = I × R, where V is voltage in volts, I is current in amperes, and R is resistance in ohms. This converter handles unit prefix conversions within each category. For calculations between different electrical quantities, you would use Ohm's Law formulas separately.
How do I convert between metric prefixes?
Metric prefixes represent powers of 10: milli (m) = 10⁻³, micro (μ) = 10⁻⁶, nano (n) = 10⁻⁹, pico (p) = 10⁻¹², kilo (k) = 10³, mega (M) = 10⁶. To convert between prefixes, multiply or divide by the appropriate power of 10. For example, 1 volt = 1000 millivolts = 1,000,000 microvolts. Our converter handles these calculations automatically.
What is the difference between farads, microfarads, and picofarads?
These are all units of capacitance with different metric prefixes: 1 farad (F) = 1,000 millifarads (mF) = 1,000,000 microfarads (μF) = 1,000,000,000 nanofarads (nF) = 1,000,000,000,000 picofarads (pF). In electronics, capacitors are typically rated in microfarads, nanofarads, or picofarads since 1 farad is a very large capacitance value.
How is horsepower related to watts?
Horsepower (hp) is a unit of power commonly used for motors and engines. The mechanical horsepower is defined as exactly 745.7 watts (often rounded to 746 W). The metric horsepower is approximately 735.5 watts. Our converter uses the mechanical horsepower standard (1 hp = 745.7 W) for electrical power conversions.
Is this tool free to use?
Absolutely! Our Electrical Unit Converter is completely free to use, with no registration required. We believe in providing high-quality, accessible tools for students, engineers, electricians, and anyone who needs to perform electrical unit conversions quickly and accurately.