Ohms to Watts Calculator

This calculator converts electrical resistance (Ohms) and voltage (Volts) to power consumption (Watts)

Input Parameters

Calculation Results

Calculation Formula

P = V²/R

Where:
P = Power in Watts
V = Voltage in Volts
R = Resistance in Ohms

Calculation Result

Power (Watts): 0.00

Ohms to Watts Calculator Calculator Usage Guide

Learn how to use the Ohms to Watts Calculator calculator and its working principles

How to Use This Calculator

  1. Enter the resistance value in Ohms (Ω). This is the electrical resistance of the component.
  2. Enter the voltage value in Volts (V). This is the electrical potential difference across the component.
  3. Click the "Calculate" button to compute the power in Watts (W).
  4. The result will be displayed in the "Power (Watts)" field.
  5. Use the "Reset" button to clear all input fields and results.

Working Principle

This calculator uses the formula P = V²/R to calculate power consumption, where:

  • P is the power in Watts
  • V is the voltage in Volts
  • R is the resistance in Ohms

This formula is derived from Ohm's Law (V = IR) and the power formula (P = VI), and it allows you to calculate the power consumption of an electrical component when you know its resistance and the voltage applied to it.

Example

For example, if you have a resistor with a resistance of 100 Ohms and it is connected to a 12 Volt source, the power consumption would be:

P = 12²/100 = 144/100 = 1.44 Watts