Energy Consumption Calculator — Calculate Your Electricity Usage & Costs

Energy Consumption Calculator

Calculate the energy consumption and electricity costs of your household appliances. Understand how usage patterns, appliance wattage, and electricity rates affect your energy bills.

Step 1: Appliance Details

3 hours
30 days

Understanding Wattage

Wattage indicates how much electricity an appliance uses when operating. Common appliances range from 10W (LED light) to 5000W (electric heater). Check your appliance’s label or manual for accurate wattage.

Step 2: Electricity Details

1 appliance

About Electricity Rates

Electricity rates vary by location, time of day, and consumption level. Check your utility bill for your exact rate. Time-of-use rates may be lower during off-peak hours (usually nights and weekends).

Energy Consumption Results

Summary
Appliance Comparison
Cost Analysis

Monthly Electricity Cost

$20.25
Energy Used: 135 kWh
Daily Energy
4.5 kWh
Monthly Energy
135 kWh
Yearly Energy
1,642 kWh
Yearly Cost
$246.38

Appliance Energy Comparison

Appliance Typical Wattage Monthly Energy Monthly Cost Annual Cost

Energy Cost Analysis

Energy Consumption Formula

Energy (kWh) = (Wattage × Hours × Days) ÷ 1000

The energy consumption is calculated by multiplying appliance wattage by daily usage hours and days per month, then dividing by 1000 to convert to kilowatt-hours (kWh).

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