How to make a monthly budget you can actually stick to
A practical guide to making a monthly budget in the U.S., with dollar examples, biweekly paychecks and simple methods like 50/30/20 and zero-based budgeting.
Electricity cost calculator
Calculate how many kWh an appliance uses and what it costs per day, month and year based on its wattage, hours of use and your electric rate.
Fix the highlighted fields to see your result.
Monthly cost—
- Daily cost
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- Yearly cost
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- kWh per day
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How it is calculated
kWh = Watts × Hours × Quantity ÷ 1,000
Cost = kWh × Rate
Assumptions and limitations
- The appliance draws its full wattage during the hours entered.
- Fixed charges, taxes and tiered rates from your utility are not included.
- The yearly cost assumes daily use all 365 days.
This tool is educational and provides estimates. It is not a credit offer or financial advice. Actual terms are set by each institution.
Frequently asked questions
How do I calculate the electricity an appliance uses?
Multiply its wattage by the hours you use it per day and divide by 1,000 to get kilowatt-hours (kWh). A 1,000-watt heater used 2 hours a day uses 2 kWh a day.
How do I find my electricity rate?
Look on your electric bill for the price per kWh, or divide the energy charges by the kWh used. Rates vary by state, utility, season and plan.
Where do I find an appliance’s wattage?
On its label or nameplate, usually on the back or bottom, or in the manual. The label wattage is often the maximum; real use may be lower, especially for appliances with thermostats.