Electrical Units Converter

🔄 Electrical Units Converter

From

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🚰 The Water Pipe Analogy

Electricity is easiest to understand through a water plumbing analogy:

💧

Voltage (V)

Water pressure pushing flow through pipes

🌊

Current (A)

Volume of water flowing past a point

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Resistance (Ω)

Pipe width / clogs restricting flow

⚙️

Power (W)

Force × flow = waterwheel output

⚡ Ohm's Law — The Big Three

Voltage (V), Current (I) and Resistance (R) are linked by Ohm's Law — the foundational formula of electrical engineering:

V = I × R | I = V / R | R = V / I

Power relates to all three:

P = V × I = I² × R = V² / R

    Example: A 100W bulb on 230V mains: I = 100 ÷ 230 ≈ 0.43 A · R = 230 ÷ 0.43 ≈ 535 Ω
  

⚠️ Electrical Conversion Note

    Only same-quantity units can be converted. Volts, Amperes, Watts and Ohms measure different physical quantities — it is physically meaningless to convert Volts into Amperes or Watts into Ohms. Use Ohm's Law formulas above to calculate relationships between them.
  

The converter below is grouped by quantity — select units within the same group (e.g. V → mV, or W → kW).

📋 All Electrical Units Reference

Unit	Equivalent	System	Common Use
Volt (V)	Electric potential	Voltage	Battery 1.5V, Mains 230V/120V
Millivolt (mV)	0.001 V	Voltage	Sensor signals, low-power circuits
Kilovolt (kV)	1,000 V	Voltage	Power transmission lines
Ampere (A)	Rate of charge flow	Current	Phone charger ~2A, house circuit ~30A
Milliampere (mA)	0.001 A	Current	Electronic circuits, LEDs
Watt (W)	Power = V × I	Power	Light bulbs, appliances
Kilowatt (kW)	1,000 W	Power	Heaters, car engines, solar panels
Megawatt (MW)	1,000,000 W	Power	Power stations, wind turbines
Ohm (Ω)	Resistance to current	Resistance	Resistors, wire resistance
Kilohm (kΩ)	1,000 Ω	Resistance	Electronic resistors
Megohm (MΩ)	1,000,000 Ω	Resistance	Insulation resistance testing

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