Electricity Cost Calculator

Calculate the electricity cost of any appliance or device. Find out daily, monthly, and yearly energy costs based on wattage and usage.

Inputs

Power Consumption

watts

Hours Used per Day

hrs/day

Days per Month

days

Electricity Rate

$/kWh

Tab to move between fields

Results

Monthly Cost

$31.20

≈ 6 cups of coffee

Daily Cost$1.04

Yearly Cost$379.60

Monthly Usage240 kWh

Yearly Usage2,920 kWh

How to Use This Calculator

Enter your monthly electricity consumption in kWh from your utility bill.
Input your electricity rate in $/kWh (check your bill or your utility's rate schedule).
Set any fixed monthly charges or demand charges.
Review the total monthly and annual electricity cost.
Use the result to evaluate energy efficiency investments and compare utility rate plans.

How the result changes with Power Consumption

Power Consumption	Monthly Cost
1,001	$31.23
3,501	$109.23
6,500	$202.80
9,000	$280.80

What each input means

Power Consumption: Check the label on your device for wattage.
Electricity Rate: US average: ~$0.13/kWh. Check your electric bill.

How this is calculated

Formula

Cost = (Watts ÷ 1000) × Hours × Days × Rate per kWh. 1 kWh = 1,000 watts used for 1 hour.

Worked example, using the default values

Identify Input Parameters
4 parameters
Power Consumption = 1000, Hours Used per Day = 8, Days per Month = 30, Electricity Rate = 0.13 = 4 input(s) provided
Calculate Monthly Cost
Monthly Cost
31.2 = $31.2
Calculate Daily Cost
Daily Cost
1.04 = $1.04
Calculate Yearly Cost
Yearly Cost
379.6 = $379.6

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