How to use ohm’s law calculator
Find voltage, current, resistance and power for a simple DC resistive load. This browser tool shows the inputs, assumptions and resulting output so you can use it for a specific everyday task.
- Enter your own values or choose a supported file.
- Adjust the options and run the tool.
- Review the result, then copy, export or save it when available.
Try this next
Enter 12 V and 6 Ω to calculate current and dissipated power.
The model assumes a simple resistive DC circuit. It is not an electrical safety assessment or a design for mains wiring.
Questions, answered.
Is ohm’s law calculator free to use?
Yes. This tool is part of Nepocore’s free browser toolkit. There is no paid tier, file-download gate or application account required.
What should I check before using the result?
The model assumes a simple resistive DC circuit. It is not an electrical safety assessment or a design for mains wiring.
Does this tool upload my files or text?
The tool processes its input in your browser. File contents and text are not sent to a processing server. See the privacy page for local storage and hosting details.