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Ohm’s law: current

Calculate ohm’s law: current using the values and assumptions you provide.

Calculate ohm’s law: current using the values and assumptions you provide.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated

Calculate

Formula: I = V / R

Calculate ohm’s law: current using the values and assumptions you provide.

voltage
Voltage (V)
resistance
Resistance (Ω)

Results depend on the assumptions entered; verify professional or safety-critical decisions independently.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const voltage = 12, resistance = 4;
console.log(voltage / resistance); // 3 A
TypeScript
const voltage = 12, resistance = 4;
const current: number = voltage / resistance;
console.log(current); // 3 A
Python
print(12 / 4)  # 3 A
Java
System.out.println(12.0 / 4); // 3 A
C#
Console.WriteLine(12m / 4m); // 3 A