# Ohms law calculator with power (DC)

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

## 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

$$P=\displaystyle V \cdot I$$