1. What is kWh?

A kilowatt-hour (kWh) is a unit of energy that represents the amount of electricity consumed over time. It's commonly used by electric utilities to measure and bill for energy usage.

2. How Does the Calculator Work?

The calculator uses the basic electricity consumption formula:

Where:

• \( Watts \) — Power consumption of the device
• \( Hours \) — Time the device is operating
• \( 1000 \) — Conversion factor from watts to kilowatts

Explanation: The formula converts watt-hours to kilowatt-hours by dividing by 1000 (since 1 kilowatt = 1000 watts).

3. Importance of kWh Calculation

Details: Calculating kWh helps estimate electricity costs, compare energy efficiency of appliances, and understand your energy consumption patterns.

4. Using the Calculator

Tips: Enter the device's power rating in watts and the duration of use in hours. For multiple devices, calculate each separately and sum the results.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the wattage of my appliance?
A: Check the label or manual. If only amps and volts are listed, multiply them (Watts = Amps × Volts).

Q2: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (power × time).

Q3: How much does 1 kWh cost?
A: Costs vary by location and provider, typically $0.10-$0.30 per kWh in the US.

Q4: Can I use this for solar panel calculations?
A: Yes, it works the same way - multiply panel wattage by hours of sunlight to estimate production.

Q5: How accurate is this calculation?
A: It's precise for constant loads. For variable loads, use average wattage over time.