Electricity Consumption Calculator

Estimate how much electricity your appliances use and what they may cost each month.

Add an appliance

Common appliance

Appliance name

Power rating

Hours used per day1.0 hours

0.5 hours24 hours

Number of appliances1 Quantity

1 20

Average Electricity rate

NPR/kWh

Days per month15 days

1 day30 days

Set the rate to match your bill. NEA residential rates are tiered, so this flat-rate estimate may differ from your actual bill.

Monthly consumption estimate

Add an appliance to begin

Your monthly energy use and cost will appear here.

How appliance consumption is calculated

Energy use is calculated from an appliance's power rating, hours of use, quantity and days in the month. One unit of electricity is one kilowatt-hour (kWh).

Monthly units = (watts × hours/day × quantity × days) ÷ 1,000

The cost estimate multiplies monthly units by the electricity rate you enter. Appliance power ratings and actual usage vary; check the appliance label and your bill for better estimates. NEA tariffs use progressive slabs, so a flat per-unit rate is an approximation.

For an estimate using residential NEA tariff slabs, use the electricity bill calculator.