Electricity Cost Calculator

Electricity Cost Calculator

This electricity cost calculator helps to determine how much you need to pay for your electricity invoices at the end of each month. Every time you purchase a new electrical device, you may think about how much it will cost you to run it. The tool does exactly the same to answer you with accurate energy cost calculations.

For example, if you have purchased a refrigerator (Power Consumption: 150W) and run it for 10 hours daily, you just need to 

• Enter the wattage, daily usage time, and unit price/kWh in designated fields
• Click Calculate & the electricity cost calculator will determine the daily, weekly, monthly, and yearly electricity cost

How To Calculate Electricity Cost?

You can manually calculate the electricity cost by using the formulas below:

Watts: 

Watts = (amps) x (volts)

Kilowatt-hours:

Kilowatt-hours = (watts) x (usage) / 1000

Cost:

Cost = (kilowatt-hours) x (electricity rate)

Example (Electricity Cost):

Let’s suppose you run a microwave oven and want to calculate its electricity cost based on monthly consumption!

• Device: Microwave Oven

• Power consumption: 2000 watts
• Electricity rate: $0.14 per kilowatt-hour
• Daily usage: 10 hours

Solution:

Calculate Watts:

As watts are already given, so we do not need to calculate

Calculate Kilowatt-hours (kWh):

Kilowatt-hours = (watts) x (usage) / 1000

Kilowatt-hours = (2000 watts) x (10 hours/day) / 1000

Kilowatt-hours = 20 kWh/day

Calculate Monthly Kilowatt-hours:

Assuming a 30-day month:

Monthly kWh = 20 kWh/day * 30 days = 600 kWh/month

Calculate Cost:

Cost = (kilowatt-hours) x (electricity rate)

Cost = (600 kWh/month) x ($0.14/kWh)

Cost = $84/month