CalculatorEngineering

Ohm's Law Calculator

Calculate voltage from current and resistance.

Instant · no account

Input

Enter your values

CurrentA

ResistanceΩ

Method

How it works

Change any input above and the result updates instantly. The formula or method used by this tool is shown below.

Voltage = Current × Resistance

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Quick answers

About this tool

What does the Ohm's Law Calculator do?+

Calculate voltage from current and resistance.

How does this calculator calculate the result?+

It uses this method: Voltage = Current × Resistance

Are my inputs saved or sent to an account?+

Core CalcForge tools require no account, and most calculations run locally in your browser. Favorites and recent-tool history, when used, stay in this browser.