# Ohms law calculator with power (DC)

The ohms law calculator calculates voltage, current, resistance and power according to ohms law for DC.

## See Also

## Ohms law calculator parameters

**Voltage (V):**DC voltage in Volts (V).**Current (I):**DC current in ampere (A).**Resistance (R):**Resistance in ohm (Ω)**Power (P):**Power in Watts (W)

## How to calculate voltage, current and resistance with ohms law?

### Ohms law formula for current is

\(I=\displaystyle \frac{V}{R}\)

### Ohms law formula for voltage is

\(V=\displaystyle I \cdot R\)

### Ohms law formula for resistance is

\(R=\displaystyle \frac{V}{I}\)

### Formula for DC power

\(P=\displaystyle V \cdot I\)