DC electrical power
Engineering / FREE CALCULATOR
Calculate power from DC voltage and current.
Your answer starts here.
Enter your values and select Calculate to see the result and any available breakdown.
How to use this calculator
- Enter voltage (v). Use the unit shown beside the field.
- Enter current (a). Use the unit shown beside the field.
- Select Calculate and review the result. Select Reset to restore the example inputs.
How the calculation works
Voltage (V)*Current (A)
Worked example
Voltage (V) = 12; Current (A) = 2. Result: 24 W.
Understand your result
Calculate power from DC voltage and current. The result is expressed in W.
Assumptions and limitations
For AC circuits power factor and waveform may be relevant. Results are rounded for display.
Questions about this tool
What does this tool calculate?
Calculate power from DC voltage and current.
What should I check before using the answer?
For AC circuits power factor and waveform may be relevant.
Related guides
Guides will appear here when published and linked by the editor.