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:

• \( kWh \) — Kilowatt-hours (energy)
• \( W \) — Power in watts
• \( h \) — Time in hours

Explanation: The formula converts watts to kilowatts (by dividing by 1000) and multiplies by hours to get energy consumption.

3. Importance of kWh Calculation

Details: Calculating kWh helps estimate electricity costs, understand energy consumption patterns, and make informed decisions about energy usage and efficiency.

4. Using the Calculator

Tips: Enter power in watts and time in hours. Both values must be positive numbers. The calculator will automatically convert to kWh.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts and kWh?
A: Watts measure power (rate of energy use), while kWh measures energy (power × time).

Q2: How many kWh is 1000 watts for 1 hour?
A: Exactly 1 kWh (1000 watts × 1 hour ÷ 1000 = 1 kWh).

Q3: Can I use this for appliances?
A: Yes, if you know the appliance's wattage and how long it runs, you can calculate its energy consumption.

Q4: How accurate is this calculation?
A: It's accurate for constant power draw. For devices with variable power, you'd need to calculate for different power levels separately.

Q5: How can I estimate my electricity bill?
A: Multiply the kWh result by your electricity rate (cost per kWh) to estimate cost.