What units should I enter?

Current magnitude (A); Resistance (Ω). Voltage magnitude (V).

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Math & Numbers · ALWAYS FREE

Ohm's Law: voltage magnitude (v). Calculate locally with explicit inputs and assumptions.

Step 1 / 3 / Input & configure

Voltage magnitude (V)

Add your input, choose your settings, then process. Review the result here before copying or downloading.

No upload. No account. No saved inputs.

A LITTLE CONTEXT

Enter or edit the example values in the input panel.
Review the method below and choose the options that match your task.
Run the tool, check the result, and copy or download it. Reset restores the example; Clear removes your input and result.

V = IR for an ideal ohmic resistor.

Calculate voltage from current and resistance for an ideal resistor. This mode does not solve AC impedance or model non-ohmic components.

Result units: Voltage magnitude (V)