Electricity Bill Calculator
Appliances
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What Your Result Means
- Daily total: The combined cost of running all listed appliances for one day at your electricity rate. This helps you identify which devices drive your daily energy spend.
- Monthly total: Daily cost multiplied by 30 — a useful estimate of how much these appliances add to your monthly electric bill. Actual bills also include fixed charges, taxes, and tiered rates.
- Yearly total: The annual running cost of these appliances. Comparing the yearly figures across devices reveals where energy-efficiency upgrades would save the most money.
- Breakdown table: Each appliance's individual cost at the daily, monthly, and yearly level, so you can quickly spot the most expensive items to run.
How This Calculator Works
You enter your electricity rate in dollars per kilowatt-hour, then add appliances and the hours per day each one runs. For each appliance the tool computes kWh = watts × hours ÷ 1,000, then multiplies by your rate to get the daily cost. Monthly and yearly totals use 30 and 365 days respectively. Wattages are typical values — check your appliance's label for exact figures.
Quick Questions
Where do I find my electricity rate?
Look at your most recent electric bill — the rate is usually listed in cents or dollars per kWh. The U.S. national average is roughly $0.16/kWh, but it varies widely by state and utility. Some plans have tiered rates that change with usage.
Why doesn't this match my actual bill?
Real electric bills include base charges, demand charges, taxes, renewable surcharges, and sometimes tiered or time-of-use pricing. This calculator estimates the energy-usage portion only, which is typically the largest component but not the whole bill.
How do I find an appliance's wattage?
Check the label or nameplate on the device — it usually lists watts (W) or amps and volts (multiply amps × volts to get watts). You can also use a plug-in power meter (like a Kill A Watt) for an exact reading during actual use.
Which appliances cost the most to run?
Heating and cooling equipment (air conditioners, space heaters, electric furnaces) are typically the biggest energy consumers. Clothes dryers, water heaters, and ovens also rank high. LED lights and modern electronics are generally quite inexpensive to operate.
Does standby or phantom power matter?
Standby power (devices plugged in but not actively in use) typically adds 5–10% to a household's electric bill. Smart power strips that cut standby draw can help reduce this "phantom load."
Sources
- U.S. Energy Information Administration — Electric Power Monthly (national and state average electricity rates)
- U.S. Department of Energy — Estimating Appliance Energy Use (official wattage estimates and energy-saving tips)
- ENERGY STAR (appliance efficiency ratings and savings calculators)
Method & review
Estimate only. Results reflect your inputs and standard formulas. Double-check important decisions independently.