1. What is kWh?

kWh (kilowatt-hour) is a unit of energy that represents the amount of electricity consumed over time. It's the standard measurement used by utility companies for billing purposes.

2. How Does the Calculator Work?

The calculator uses the kWh formula:

Where:

• \( P \) — Power consumption in watts (W)
• \( h \) — Time 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 = 1000 watts.

3. Importance of kWh Calculation

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

4. Using the Calculator

Tips: Enter the device's power rating in watts and the duration of use in hours. Common examples:

• 60W bulb running for 10 hours = 0.6 kWh
• 1500W heater running for 2 hours = 3 kWh
• 5W LED bulb running for 24 hours = 0.12 kWh

5. Frequently Asked Questions (FAQ)

Q1: How do I find my appliance's wattage?
A: Check the label or manual. If only amps and volts are listed, multiply them (P = I × V).

Q2: How does this relate to my electricity bill?
A: Utility companies charge per kWh. Multiply kWh by your rate to estimate cost.

Q3: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), kWh measures energy (power × time).

Q4: Can I calculate monthly consumption?
A: Yes, calculate daily kWh then multiply by 30, or track actual usage over a month.

Q5: How accurate is this calculation?
A: It's theoretical. Actual consumption may vary based on power fluctuations and usage patterns.