Voltage & Current to DC Power Calculator

DC Electrical Circuit Power Parameters
Voltage (V) [?]
Select voltage unit microvolts (µV) millivolts (mV) volts (V) kilovolts (kV) yoctovolts (yV) zeptovolts (zV) attovolts (aV) femtovolts (fV) picovolts (pV) nanovolts (nV) microvolts (µV) millivolts (mV) centivolts (cV) decivolts (dV) volts (V) decavolts (daV) hectovolts (hV) kilovolts (kV) megavolts (MV) gigavolts (GV) teravolts (TV) petavolts (PV) exavolts (EV) zettavolts (ZV) yottavolts (YV)
Current (I) [?]
Select current unit microamps (µA) milliamps (mA) amps (A) yoctoamps (yA) zeptoamps (zA) attoamps (aA) femtoamps (fA) picoamps (pA) nanoamps (nA) microamps (µA) milliamps (mA) centiamps (cA) deciamps (dA) amps (A) decaamps (daA) hectoamps (hA) kiloamps (kA) megaamps (MA) gigaamps (GA) teraamps (TA) petaamps (PA) exaamps (EA) zettaamps (ZA) yottaamps (YA)
Calculate DC Electrical Power
Power (P) [?]
Select power unit watts (W) kilowatts (kW) megawatts (MW) volt-amperes (V·A) kilovolt-amperes (kV·A) electrical horsepower (hp(E)) yoctowatts (yW) zeptowatts (zW) attowatts (aW) femtowatts (fW) picowatts (pW) nanowatts (nW) microwatts (µW) milliwatts (mW) centiwatts (cW) deciwatts (dW) watts (W) decawatts (daW) hectowatts (hW) kilowatts (kW) megawatts (MW) gigawatts (GW) terawatts (TW) petawatts (PW) exawatts (EW) zettawatts (ZW) yottawatts (YW) yoctovolt-amperes (yV·A) zeptovolt-amperes (zV·A) attovolt-amperes (aV·A) femtovolt-amperes (fV·A) picovolt-amperes (pV·A) nanovolt-amperes (nV·A) microvolt-amperes (µV·A) millivolt-amperes (mV·A) centivolt-amperes (cV·A) decivolt-amperes (dV·A) volt-amperes (V·A) decavolt-amperes (daV·A) hectovolt-amperes (hV·A) kilovolt-amperes (kV·A) megavolt-amperes (MV·A) gigavolt-amperes (GV·A) teravolt-amperes (TV·A) petavolt-amperes (PV·A) exavolt-amperes (EV·A) zettavolt-amperes (ZV·A) yottavolt-amperes (YV·A) electrical horsepower (hp(E)) mechanical horsepower (hp(I)) imperial horsepower (hp(I)) metric horsepower (PS) calories/sec (cal/s) kilocalories/sec (kcal/s) joules/sec (J/s) kilojoules/sec (kJ/s) british thermal units/sec (Btu/s ISO) foot-pounds/sec (ft·lb/s) newton-metres/sec (N·m/s) kilogram-force metres/sec (kgf·m/s) gram-force centimetres/sec (gf·cm/s) ergs/sec (erg/s) calories/min (cal/min) kilocalories/min (kcal/min) joules/min (J/min) kilojoules/min (kJ/min) british thermal units/min (Btu/min ISO) foot-pounds/min (ft·lb/min) newton-metres/min (N·m/min) kilogram-force metres/min (kgf·m/min) gram-force centimetres/min (gf·cm/min) ergs/min (erg/min) calories/hour (cal/h) kilocalories/hour (kcal/h) joules/hour (J/h) kilojoules/hour (kJ/h) british thermal units/hour (Btu/h ISO) foot-pounds/hour (ft·lb/h) newton-metres/hour (N·m/h) kilogram-force metres/hour (kgf·m/h) gram-force centimetres/hour (gf·cm/h) ergs/hour (erg/h)

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User Guide

Use this calculator to determine the power in watts, kilowatt, megawatt, volt-ampere, kilovolt-ampere or electrical horsepower units generated by a direct current (DC) electrical circuit for a specified voltage and current. Two conversion scales show how the power will vary when the  voltage or current is changed independently.

Formula

The formula used by this calculator to determine the DC electrical power generated from the voltage and current is:

P = V · I

Symbols

• P = Electrical power (DC)
• V = Voltage (DC)
• I = Current (DC)

Voltage (V)

This is the DC voltage or electrical potential difference applied to or generated by the electrical circuit.

Current (I)

This is the electrical current flowing through the DC electrical circuit.

Power (P)

This is the resulting electrical power generated by a DC electrical circuit with the entered values for voltage and current .