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Hndy Tools

Appliance Wattage Calculator

Calculate electricity costs and power consumption for multiple appliances

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Electricity
Energy
Cost

Electricity Unit Cost

Check your electricity bill for the exact rate

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About This Calculator

The Appliance Wattage Calculator helps you estimate electricity costs for your home or office appliances. Simply add appliances with their power ratings, quantities, and daily usage hours to see detailed consumption and cost breakdowns.

How to use: Enter the appliance name, power rating (in watts), quantity, and daily runtime hours. Set your electricity unit cost (found on your utility bill), and the calculator will show daily consumption in kWh and costs.

Features: Add/edit/remove appliances, real-time calculations, total consumption and cost summaries, and sample data to get started quickly.

All calculations happen in your browser - no data is sent to any server, ensuring complete privacy.

Frequently Asked Questions (FAQ)

How is the electricity cost calculated?
Daily cost per appliance = (Power Rating in Watts ÷ 1000) × Runtime Hours × Unit Cost per kWh × Quantity. The total daily cost is the sum of all appliance costs, and monthly cost is daily cost × 30.
What is the typical electricity cost per kWh?
Electricity costs vary by location. In the US, the average is around $0.12-$0.15 per kWh. Check your electricity bill for your exact rate, or search online for rates in your area.
Where can I find the power rating of my appliances?
Power ratings are usually found on appliance labels, user manuals, or energy guide stickers. Look for values listed in watts (W) or kilowatts (kW). You can also search online for typical power consumption of common appliances.
How accurate are these calculations?
These calculations provide estimates based on the power ratings and usage hours you input. Actual consumption may vary due to factors like appliance efficiency, age, usage patterns, and environmental conditions.
Can I calculate costs for different billing periods?
The tool shows daily and monthly (30-day) costs. For different periods, multiply the daily cost by the number of days. For example, yearly cost = daily cost × 365.
Is my data processed securely?
All calculations happen in your browser. No data is sent to any server, ensuring complete privacy and security of your appliance and cost information.