Electrical
Electrical Unit Converters
Convert every common electrical unit: amps, volts, ohms, watts, farads, henrys, coulombs, siemens and more. Built for students, electricians and engineers.
Frequently asked questions
How do I convert watts to amps?
Amps = watts ÷ volts. For example, a 1200 W appliance on a 120 V supply draws 10 A. Use the power and current converters together for any combination.
What is the difference between volts, amps and ohms?
Volts measure electrical pressure, amps measure current flow, and ohms measure resistance. They are linked by Ohm's law: volts = amps × ohms.
Do these tools handle milli- and kilo- prefixes?
Yes — each converter includes the full prefix range from nano and milli up to kilo and mega, so you can convert mA to A or kV to V directly.