Estimate Your Electric Bill
Add your appliances below with their wattage and daily usage hours. The calculator estimates your monthly electricity cost based on your rate per kWh. Use the presets to quickly add common household appliances.
Estimated Electric Bill
Monthly Cost by Appliance
Detailed Breakdown
| Appliance | Watts | Hrs/Day | Qty | kWh/Month | $/Month | % of Total |
|---|
How the Calculation Works
The electric bill estimation follows a straightforward formula:
Monthly kWh = (Watts x Hours/Day x 30) / 1,000
Monthly Cost = Monthly kWh x Rate per kWh
Step by step:
- Watt-hours per day: Multiply the appliance wattage by hours used per day.
- Monthly watt-hours: Multiply daily watt-hours by 30 days.
- Convert to kWh: Divide by 1,000 (since 1 kWh = 1,000 Wh).
- Calculate cost: Multiply monthly kWh by your electricity rate ($/kWh).
Example: A 150-watt refrigerator running 24 hours/day at $0.16/kWh:
(150 W x 24 hr x 30 days) / 1,000 = 108 kWh/month
108 kWh x $0.16 = $17.28/month
Common Appliance Wattage Reference
Typical wattage ranges for common household appliances. Actual wattage varies by model, age, and efficiency rating.
| Appliance | Typical Watts | Avg Hrs/Day | Est. $/Month* |
|---|---|---|---|
| Central Air Conditioner | 3,000--5,000 | 8 | $115--$192 |
| Water Heater (electric) | 4,000--5,500 | 3 | $58--$79 |
| Space Heater | 1,000--1,500 | 6 | $29--$43 |
| Clothes Dryer | 2,000--5,000 | 1 | $10--$24 |
| EV Charger (Level 2) | 3,800--7,700 | 4 | $73--$148 |
| Oven / Range | 2,000--3,000 | 1 | $10--$14 |
| Dishwasher | 1,200--2,400 | 1 | $6--$12 |
| Refrigerator | 100--200 | 24 | $12--$23 |
| Pool Pump | 1,000--2,000 | 8 | $38--$77 |
| Dehumidifier | 300--700 | 10 | $14--$34 |
| Washing Machine | 400--600 | 1 | $2--$3 |
| Desktop Computer | 100--300 | 6 | $3--$9 |
| TV (55-inch LED) | 60--100 | 5 | $1--$2 |
| Ceiling Fan | 50--100 | 8 | $2--$4 |
| LED Light Bulb | 8--12 | 6 | $0.23--$0.35 |
*Estimated at $0.16/kWh. Actual costs depend on your local rate and appliance efficiency.
Tips to Reduce Your Electric Bill
Frequently Asked Questions
How do I calculate my electric bill from appliances?
Multiply each appliance's wattage by its daily usage hours, then multiply by 30 days to get monthly watt-hours. Divide by 1,000 to convert to kWh. Multiply kWh by your rate per kWh. Sum all appliances for your estimated total monthly bill.
What is a kilowatt-hour (kWh)?
A kilowatt-hour is a unit of energy equal to using 1,000 watts of power for one hour. For example, a 100-watt bulb running for 10 hours uses 1 kWh. Your electric company charges you based on total kWh consumed.
What is the average electricity rate in the US?
The US average residential electricity rate is approximately $0.16 per kWh. However, rates vary widely by state -- from about $0.10/kWh in states like Louisiana and Oklahoma to over $0.30/kWh in Hawaii and parts of New England. Check your latest electric bill for your exact rate.
Why is my actual bill higher than this estimate?
This calculator estimates energy consumption only. Your actual electric bill may include additional charges such as: fixed service/delivery charges, demand charges, taxes and surcharges, fuel adjustment charges, and tiered pricing where rates increase at higher usage levels. The tool helps you understand your usage-based costs, which are typically the largest component.
How can I find my appliance's wattage?
Check the label on the back or bottom of the appliance, the owner's manual, or the manufacturer's website. The label usually shows watts (W) or amps (A) and volts (V). If it shows amps and volts, multiply them to get approximate watts (W = A x V).
Does this calculator store my data?
No. All calculations run entirely in your browser. No data is sent to any server, and nothing is stored.
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Privacy
This calculator runs entirely in your browser. No appliance data, usage information, or electricity rates are transmitted or stored anywhere. Your data stays on your device.
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Electric Bill Calculator FAQ
How do I calculate my electric bill from appliances?
Multiply each appliance's wattage by the hours used per day, then multiply by 30 days to get monthly watt-hours. Divide by 1,000 to convert to kilowatt-hours (kWh). Multiply kWh by your electricity rate (cost per kWh) to get the monthly cost for that appliance. Sum all appliances for your total estimated bill.
What is a kilowatt-hour (kWh)?
A kilowatt-hour (kWh) is a unit of energy equal to using 1,000 watts of power for one hour. For example, a 100-watt light bulb running for 10 hours uses 1 kWh. Your electric bill is based on the total kWh you consume each month.
What is the average electricity rate in the US?
The average US residential electricity rate is approximately $0.16 per kWh, though rates vary significantly by state -- from about $0.10/kWh in some states to over $0.30/kWh in others like Hawaii and Connecticut.
How can I reduce my electric bill?
Common ways to reduce your electric bill include: switching to LED bulbs, using a programmable thermostat, unplugging electronics when not in use (to eliminate standby power), running large appliances during off-peak hours, improving home insulation, and upgrading to ENERGY STAR rated appliances.
Does this calculator store my data?
No. All calculations run entirely in your browser. No data is sent to any server, and nothing is stored.