Electricity Bill Calculator

Calculate your monthly electricity bill by adding appliances and their usage. Find your biggest energy consumers.

By Konstantin Iakovlev · Updated April 2026 · Source: DOE

$/kWh

Appliances

Refrigerator
W
hrs
Air Conditioner
W
hrs
Lights
W
hrs

Estimated Monthly Bill

$75.60

$2.52/day

Monthly kWh

540.0

Daily Cost

$2.52

Monthly Cost

$75.60

Cost by Appliance

Air Conditioner360.0 kWh - $50.40
Refrigerator108.0 kWh - $15.12
Lights (x5)72.0 kWh - $10.08
Total540.0 kWh - $75.60

Top Energy Users

1. Air Conditioner67% of total
2. Refrigerator20% of total
3. Lights13% of total

Use the Electricity Bill Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Breaking a power bill down appliance by appliance turns an opaque monthly charge into something you can actually act on. Once you see which devices dominate your consumption, choices about what to unplug, replace, or run less often stop being guesswork. With energy prices projected to climb through 2026, that kind of visibility pays off faster than it used to.

Each appliance contributes energy measured in kilowatt-hours, found by dividing its wattage by 1000, then multiplying by hours used per day and days used per month. Summing those figures across every device gives total monthly kWh, which is then multiplied by your local rate per kWh. A US average near $0.18 per kWh for 2026 offers a starting point, though regional rates swing widely above and below that mark.

Accuracy hinges on the wattage you enter, so read the label on the device itself rather than estimating. Daily run-time is the other trap, easy to undercount for anything that idles on standby. Phantom load deserves a line of its own: televisions, chargers, and game consoles keep drawing power even when they appear to be off, and over a month that quiet draw adds up.

Example: Calculating a Refrigerator's Monthly Cost

  1. 1 Input: Let's calculate the cost for a refrigerator. Assume it has a wattage of 150W, runs 24 hours a day, and 30 days a month. We'll use an electricity rate of $0.18/kWh.
  2. 2 Calculation: (150W / 1000) * 24 hours/day * 30 days/month = 108 kWh/month. Then, 108 kWh/month * $0.18/kWh = $19.44 per month.
  3. 3 Result: This refrigerator will add approximately $19.44 to your monthly electricity bill.
  4. 4 Context: You can repeat this process for all your major appliances like air conditioners, water heaters, and washing machines to get a comprehensive understanding of your household's energy consumption and identify areas for potential savings.

Source: DOE · Last updated: April 2026

Frequently Asked Questions

What uses the most electricity in a home?
Heating and cooling account for about 40-50% of home electricity use. Other major consumers are water heating (14%), appliances like washer/dryer and refrigerator (13%), lighting (9%), and electronics (5-10%).
How do I read my electricity bill?
Key terms: kWh (kilowatt-hours) measures energy used, the rate (cents per kWh) is the unit price, and usage charges equal kWh times the rate. Most bills also include delivery charges, taxes, and fees. The US average is about 16 cents per kWh.
How can I lower my electricity bill?
The biggest savings come from adjusting your thermostat (each degree saves 1-3%), sealing air leaks, upgrading to LED lights, using Energy Star appliances, and running heavy-use appliances during off-peak hours if your utility offers time-of-use rates.