1. What is the kWh Calculation?

The kilowatt-hour (kWh) is a unit of energy that represents power consumption over time. It's the standard measurement used by electric utilities for billing purposes.

2. How Does the Calculator Work?

The calculator uses the simple energy formula:

Where:

• \( W \) — Power consumption in watts
• \( h \) — Time in hours
• 1000 — Conversion factor (1000 watts = 1 kilowatt)

Explanation: This formula converts watt-hours to kilowatt-hours by dividing by 1000.

3. Importance of Energy Calculation

Details: Understanding energy consumption helps in estimating electricity costs, comparing appliance efficiency, and reducing energy waste.

4. Using the Calculator

Tips: Enter the device's wattage (found on its label or specifications) and the number of hours it operates. For devices with variable power, use average wattage.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my device's wattage?
A: Check the device's label, manual, or specifications. For appliances, it's often listed in watts (W) or amps (A) and volts (V).

Q2: What's the average kWh consumption for household appliances?
A: Refrigerators use about 1-2 kWh/day, LED bulbs 0.01 kWh/hour, while air conditioners can use 3-5 kWh/hour.

Q3: How can I reduce my kWh consumption?
A: Use energy-efficient appliances, turn off devices when not in use, and consider smart power strips for electronics.

Q4: How does this translate to electricity costs?
A: Multiply kWh by your utility's rate (e.g., $0.12/kWh). A 100W bulb running 10 hours/day costs about $3.60/month.

Q5: What if my device lists amps instead of watts?
A: Multiply amps by voltage (120V in US) to get watts. A 5A device at 120V = 600W.