1. What is Watt-Hours?

Watt-hour (Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time. It's commonly used to measure electrical energy consumption.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Wh \) — Energy in watt-hours
• \( P \) — Power in watts
• \( h \) — Time in hours

Explanation: This formula calculates the total energy consumed or produced by multiplying power by time.

3. Importance of Watt-Hours Calculation

Details: Calculating watt-hours helps in understanding energy consumption, estimating electricity costs, and sizing battery systems for various applications.

4. Using the Calculator

Tips: Enter power in watts and time in hours. Both values must be positive numbers. The calculator will compute the total energy in watt-hours.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts and watt-hours?
A: Watts measure power (rate of energy use), while watt-hours measure energy (total consumption over time).

Q2: How do I convert watt-hours to kilowatt-hours?
A: Divide watt-hours by 1000 to get kilowatt-hours (kWh).

Q3: Why is watt-hours important for batteries?
A: Battery capacity is often rated in watt-hours, indicating how much energy it can store and deliver.

Q4: Can I use this for solar panel calculations?
A: Yes, you can calculate daily energy production by multiplying panel wattage by peak sun hours.

Q5: How accurate is this calculation?
A: It's perfectly accurate for constant power draw. For variable power, you'd need to sum (power × time) for each interval.