1. What is the Watts to kWh Formula?

The Watts to kWh formula converts power consumption in watts to energy usage in kilowatt-hours. This is essential for calculating electricity consumption and costs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

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

3. Importance of Energy Calculation

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

4. Using the Calculator

Tips: Enter power in watts and time in hours. Both values must be positive numbers. The result shows energy consumption in kilowatt-hours.

5. Frequently Asked Questions (FAQ)

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

Q2: How do I convert kWh to electricity cost?
A: Multiply kWh by your electricity rate (price per kWh). For example, 5 kWh at $0.12/kWh = $0.60.

Q3: What's a typical wattage for household appliances?
A: LED bulb: 10W, Laptop: 50W, Refrigerator: 150W, Microwave: 1000W.

Q4: Why divide by 1000 in the formula?
A: To convert watts to kilowatts (1 kW = 1000 W), since kWh uses kilowatts as the base unit.

Q5: Can I use this for solar panel calculations?
A: Yes, you can calculate energy production by entering panel wattage and hours of sunlight.