1. What is Power Consumption?

Power consumption refers to the amount of electrical energy used by a device or system over time. It is typically measured in kilowatt-hours (kWh), which represents the energy consumed when a 1000-watt device operates for one hour.

2. How Does the Calculator Work?

The calculator uses the power consumption formula:

Where:

• \( kWh \) — Energy consumption in kilowatt-hours
• \( Power \) — Electrical power in watts (W)
• \( Hours \) — Time duration in hours (hr)
• \( 1000 \) — Conversion factor from watts to kilowatts

Explanation: This formula converts the product of power and time from watt-hours to kilowatt-hours by dividing by 1000.

3. Importance of Energy Calculation

Details: Calculating energy consumption is essential for estimating electricity costs, managing energy usage, comparing appliance efficiency, and planning energy conservation strategies.

4. Using the Calculator

Tips: Enter the power rating of your device in watts and the number of hours it operates. Both values must be positive numbers. The calculator will provide the energy consumption in kilowatt-hours.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between watts and kilowatt-hours?
A: Watts measure power (rate of energy use), while kilowatt-hours measure energy consumption (power × time).

Q2: How do I find the power rating of my appliance?
A: Check the manufacturer's label, specification sheet, or user manual. Most appliances display power ratings in watts.

Q3: Can I use this for multiple appliances?
A: Yes, calculate each appliance separately and sum the results for total energy consumption.

Q4: How accurate is this calculation?
A: It provides theoretical consumption. Actual usage may vary based on operating conditions, efficiency, and power fluctuations.

Q5: How do I convert kWh to electricity cost?
A: Multiply the kWh result by your local electricity rate (cost per kWh) to estimate the cost.