How to Use the Volts to Amps Conversion Calculator

Fill in voltage first, then whichever of resistance or power is actually known — the second field left empty is fine, since only one of the two ever gets used per calculation.

Using resistance: I = V ÷ R
Using power:      I = P ÷ V

Ohm's Law rearranged for current, or the power formula rearranged the same way — whichever value you've already got determines which path applies. This Volts to Amps Calculator takes voltage plus either resistance or power and returns the current.