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 utility companies to measure and bill for electricity usage.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Watts \) — Power consumption of the device or appliance
• \( Hours \) — Duration of usage in hours
• \( 1000 \) — Conversion factor from watts to kilowatts

Explanation: The formula converts watt-hours to kilowatt-hours by dividing by 1000, since 1 kilowatt equals 1000 watts.

3. Importance of kWh Calculation

Details: Understanding your kWh usage helps estimate electricity costs, compare appliance efficiency, and reduce energy consumption for environmental and financial benefits.

4. Using the Calculator

Tips: Enter the wattage of your device/appliance and the number of hours it operates. 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. Alternatively, use a wattmeter or multiply amps × volts (for devices that list amps but not watts).

Q2: What's the average kWh usage for a home?
A: In the US, average is about 877 kWh/month, but varies greatly by location, home size, and appliances.

Q3: How can I reduce my kWh consumption?
A: Use energy-efficient appliances, LED lighting, smart power strips, and unplug devices when not in use.

Q4: Does standby power consumption matter?
A: Yes! Many devices consume "phantom load" when off but plugged in, which can add up over time.

Q5: How do I convert kWh to cost?
A: Multiply kWh by your local electricity rate (found on your utility bill, typically $0.10-$0.30 per kWh).