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Science

Ohms law current Calculator

Use the free ohms law current calculator. Enter voltage (v), resistance (ω) to get a result, with a formula and worked example.

How to calculate ohms law current

This tool calculates ohms law current from Voltage (V), Resistance (Ω). Enter each quantity in its labelled field, then use the formula below to check the calculation.

Formula

voltage ÷ resistance

Worked example

Voltage (V)
12
Resistance (Ω)
6

Applying the formula to these values gives 2 A.

What should I check?

Use SI units to explore mechanics, waves and basic DC electrical arithmetic. These are idealised educational formulas, not engineering specifications.

Use the reset button to restore this example. Your inputs are processed in this browser and are not included in a shared calculator link. See our methodology and limitations.

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