Volts to Amps Calculator
Convert electric potential in Volts (V) to electric current in Amps (A) using Power (Watts) or Resistance (Ohms).
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How to Convert Volts to Amps
To calculate current from voltage, you need to know either the Power (Watts) or the Resistance (Ohms) of the circuit.
Using Resistance (Ohm's Law)
According to Ohm's Law, current is equal to voltage divided by resistance.
I(A) = V(V) / R(Ω)
Using Power (Watts)
If you know the power consumption, the formula depends on the current type.
DC Circuits
I(A) = P(W) / V(V)
AC Single Phase
I(A) = P(W) / (V(V) × PF)
Calculation Examples
Example 1 (Ohm's Law): Voltage is 120 Volts and Resistance is 24 Ohms.
I = 120 V / 24 Ω = 5 Amps
Example 2 (Power): Power is 600 Watts and Voltage is 120 Volts (DC).
I = 600 W / 120 V = 5 Amps