Enter the direct current (amps) and the direct voltage (volts) into the calculator to determine the DC Power. 

DC Power Formula

The following formula is used to calculate the DC Power. 

Pdc = Idc * Vdc
  • Where Pdc is the DC Power (watts)
  • Idc is the direct current (amps) 
  • Vdc is the direct voltage (volts) 

To calculate the DC power, multiply the direct current by the direct voltage.

How to Calculate DC Power?

The following two example problems outline how to calculate the DC Power.

Example Problem #1:

  1. First, determine the direct current (amps). In this example, the direct current (amps) is measured to be 51.
  2. Next, determine the direct voltage (volts). For this problem, the direct voltage (volts) is calculated to be 6.
  3. Finally, calculate the DC Power using the formula above: 

Pdc = Idc * Vdc

Inserting the values from above and solving the equation with the imputed values gives: 

Pdc = 51* 6 =306 (watts)


FAQ

What is the difference between DC and AC power?

DC power, or direct current, flows in one direction and is typically used in batteries, solar cells, and other electronics. AC power, or alternating current, changes direction periodically and is the type of electricity supplied to homes and businesses, allowing for more efficient long-distance power transmission.

How can I convert AC power to DC power?

To convert AC power to DC power, a device called a rectifier is used. Rectifiers can be made from diodes, transistors, or other components that allow current to flow in only one direction, effectively converting the alternating current into a direct current.

Why is it important to calculate DC power?

Calculating DC power is crucial for designing and troubleshooting electrical and electronic systems. It helps in determining the power consumption of devices, ensuring that components are not overloaded, and in the efficient design of power supply and distribution systems.