Electrical Energy Consumption Calculator

How to Use This Calculator

Using the electrical energy consumption calculator is straightforward. Follow these steps:

1. Enter the power rating of your appliance in watts (W).
2. Specify how long you use the appliance each day in hours.
3. Enter the cost of electricity per kilowatt-hour (kWh).
4. Click "Calculate" to see your results.

The calculator will display the daily energy consumption in kilowatt-hours (kWh), monthly consumption, and estimated monthly cost.

Formula Explained

The electrical energy consumption is calculated using the following formula:

This formula converts watts to kilowatt-hours by dividing by 1000, as 1 kilowatt equals 1000 watts. The monthly calculation assumes 30 days in a month.

Worked Example

Let's calculate the energy consumption of a 100W lamp used for 5 hours each day with electricity costing $0.15 per kWh.

1. Daily Energy Consumption = (100W × 5h) ÷ 1000 = 0.5 kWh
2. Monthly Energy Consumption = 0.5 kWh × 30 = 15 kWh
3. Monthly Cost = 15 kWh × $0.15 = $2.25

This example shows that a 100W lamp used for 5 hours daily costs $2.25 per month.

Interpreting Results

Understanding the results from the electrical energy consumption calculator can help you make informed decisions about your energy usage:

• Daily Consumption: Shows how much energy your appliance uses each day.
• Monthly Consumption: Helps you estimate your total energy usage over a month.
• Monthly Cost: Gives you an idea of how much your appliance contributes to your electricity bill.

By comparing these values across different appliances, you can identify which devices consume the most energy and consider ways to reduce your consumption.