KWH Calculator – Calculate Energy Usage in Kilowatt-Hours
Want to know how much electricity an appliance uses? Our KWH Calculator helps you accurately calculate energy consumption in kilowatt-hours (kWh), making it easier to manage electricity usage, reduce energy bills, and promote sustainability.
How to Use the KWH Calculator
- Enter the power rating of the device in watts (W)
- Enter the number of hours it is used per day
- Enter the number of days
- Click “Calculate” to get energy usage in kWh
KWH Calculation Formula
Energy (kWh) = (Power (W) × Time (hrs) × Days) ÷ 1000
Example Calculation
Example: A 1000W appliance running 3 hours/day for 30 days
Energy = (1000 × 3 × 30) ÷ 1000 = 90 kWh
Features of Our KWH Calculator
- Accurate energy usage estimation
- Perfect for budgeting electricity bills
- User-friendly interface with instant results
- Supports multiple appliances or usage durations
Benefits of Using the KWH Calculator
- Estimate monthly or annual electricity consumption
- Helps reduce energy costs and carbon footprint
- Assists in identifying high-energy consuming devices
- Supports energy-efficient home planning
Common Appliance Energy Consumption (Approx.)
| Appliance | Power (W) | Usage (hrs/day) | Monthly kWh |
|---|---|---|---|
| LED TV | 100 | 4 | 12 kWh |
| Refrigerator | 150 | 24 | 108 kWh |
| Washing Machine | 500 | 1 | 15 kWh |
| Microwave Oven | 1200 | 0.5 | 18 kWh |
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FAQs About KWH Calculation
1. What is a kilowatt-hour?
A kilowatt-hour (kWh) is the amount of energy consumed by a device that uses 1,000 watts for 1 hour.
2. How do I calculate my electricity bill?
Multiply your total kWh usage by your electricity provider’s rate per kWh.
3. Can this calculator be used for multiple devices?
Yes, calculate each device separately and sum the results for total usage.
4. What’s the average household electricity usage?
It varies, but the average in the U.S. is about 877 kWh per month per household.
5. Is this calculator useful for solar energy planning?
Absolutely! It helps estimate total load, which is crucial for solar panel sizing.