Electronics Converter

Electrical Unit Converter

Convert common electrical and electronics units instantly. Choose a quantity such as voltage, current, resistance, power, energy, capacitance, inductance or frequency, then select the units you want to convert between.

Converted value
5,000 mV
5 V is equal to 5,000 mV.
Input
5 V
Output
5,000 mV
Quantity
Voltage
Base Value
5 V

Electrical Unit Categories

The converter covers the most common units used in electronic circuits, component specifications, measurements and engineering calculations.

Common Electrical Unit Conversions

Some frequently used electronics conversions are shown below. The converter above handles these and many additional unit combinations automatically.

Quantity Conversion Common electronics use
Voltage 1 V = 1,000 mV Power supplies, logic levels
Current 1 A = 1,000 mA LEDs, sensors, power supplies
Resistance 1 kΩ = 1,000 Ω Resistors, dividers, bias networks
Power 1 W = 1,000 mW Component and circuit power
Capacitance 1 µF = 1,000 nF Decoupling, filtering, timing
Inductance 1 µH = 1,000 nH RF, filters, converters
Frequency 1 MHz = 1,000 kHz Clocks, RF, oscillators
Charge 1 C = 1,000 mC Capacitors and charge calculations
Conductance 1 S = 1,000 mS Reciprocal of resistance
Time 1 ms = 1,000 µs Digital timing and signal analysis

SI Prefixes Used in Electronics

Electronics frequently deals with values spanning many orders of magnitude. SI prefixes make these values easier to read and write.

Prefix Symbol Multiplier Example
pico p 10⁻¹² 1 pF
nano n 10⁻⁹ 1 nF
micro µ 10⁻⁶ 1 µA
milli m 10⁻³ 1 mV
base unit — 10⁰ 1 V
kilo k 10³ 1 kΩ
mega M 10⁶ 1 MHz
giga G 10⁹ 1 GHz
tera T 10¹² 1 THz

Electrical Formulas Behind the Units

Ohm's Law

V = I × R

Voltage, current and resistance are related by Ohm's law. The same relationship can be rearranged to find current or resistance.

Electrical Power

P = V × I

Power is the rate at which electrical energy is transferred. Other forms include P = I²R and P = V²/R.

Capacitance

Q = C × V

Capacitance relates stored electrical charge to the voltage across a capacitor.

Inductance

V = L × di/dt

An inductor produces a voltage proportional to the rate of change of current through it.

Frequency

f = 1 / T

Frequency and period are reciprocals. Frequency is measured in hertz and period is measured in seconds.

Conductance

G = 1 / R

Conductance is the reciprocal of resistance and is measured in siemens.

Practical Electronics Examples

Example 1: Capacitor Value

A capacitor marked as 0.1 µF can also be expressed in nanofarads:

0.1 µF = 100 nF

This is a common value for ceramic bypass and decoupling capacitors.

Example 2: RF Frequency

A wireless signal operating at 2.4 GHz can be expressed in MHz:

2.4 GHz = 2,400 MHz

This type of conversion is common in RF and wireless electronics.

Example 3: Resistor Value

A resistor measuring 4,700 ohms can be expressed in kilohms:

4,700 Ω = 4.7 kΩ

Component values are often written using the unit prefix that makes the number easiest to read.

Unit conversion is not circuit analysis
Converting units changes only the numerical representation of a quantity. It does not account for circuit topology, component tolerances, temperature, frequency response, parasitic effects, efficiency or component ratings. Use the appropriate electronics calculator when those factors matter.

Related Electronics Calculators

Ohm's Law Calculator

Calculate voltage, current, resistance and power.

Power Dissipation

Calculate electrical power from voltage, current or resistance.

Capacitor Reactance

Calculate capacitive reactance from frequency and capacitance.

Inductor Reactance

Calculate inductive reactance from frequency and inductance.

Frequency ↔ Period

Convert frequency to period and period to frequency.

dB Calculator

Calculate power and signal ratios in decibels.

Voltage ↔ dB

Convert voltage ratios to dB and dB back to voltage ratios.

dBm ↔ Watts

Convert RF power levels between dBm, watts and milliwatts.

Frequently Asked Questions

The converter supports common electronics units including voltage, current, resistance, power, energy, capacitance, inductance, frequency, electrical charge, conductance and time.

One volt equals 1,000 millivolts. To convert volts to millivolts, multiply the voltage in volts by 1,000.

One ampere equals 1,000 milliamperes. Divide a value in milliamps by 1,000 to obtain amperes.

One kilohertz equals 1,000 hertz. Multiply the frequency in kilohertz by 1,000.

One microfarad equals 1,000 nanofarads. Multiply the capacitance in microfarads by 1,000 to obtain nanofarads.

One millihenry equals 1,000 microhenries. Multiply the inductance in millihenries by 1,000.

A watt is a unit of power, describing the rate of energy transfer. A watt-hour is a unit of energy, describing an amount of energy. For example, a 10 W load operating for 2 hours consumes 20 Wh.

Resistance is measured in ohms and describes opposition to current. Conductance is measured in siemens and is the reciprocal of resistance: G = 1/R.

Yes. The converter uses common SI-based electrical prefixes such as pico, nano, micro, milli, kilo, mega and giga where appropriate.

Yes. It is designed for common electronics work such as circuit design, component selection, RF calculations, power supplies, signal analysis and laboratory measurements.