About the Current Calculator
Electric current from voltage and resistance (I = V/R), in amperes.
Also known as: amps calculator, amperage, find current, i = v/r, watts to amps.
How to use this calculator
- Enter solve for.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
I = V / R = P / V
Worked example
Using the values pre-filled in the calculator above:
- Solve for: Current
- Voltage = 230 V
- Resistance = 46 Ω
the calculator returns:
- Current: 5 A
- Voltage: 230 V
- Resistance: 46 Ω