The Electrician's Calculator has useful equations for electricity and wiring. These include Voltage Drop equations, Electrical Cost equations, and equations for the relationships between potential (voltage), current, resistance and power (aka Ohm's Law). Checkout the new!
The Electrician's Calculator has a tab for General functions. These include:
Ohm's Law established relations between potential (voltage), current, resistance and power.
Compute Electrical Power: (watts, milliwatts, kilowatts, horsepower)
Compute Electrical Potential: (volts, millivolts)
Compute Electrical Resistance: (ohms, milliohms, kiloohms)
Compute Electrical Current: (amps, milliamps, microamps, gilberts)
Feel free to update this section with advice, data and references for people using these equations.