1. What is Watt-Hour?

A 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 or production.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

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

Explanation: This formula calculates the total energy consumption by multiplying power by time.

3. Importance of Watt-Hour 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 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 many watt-hours are in a kilowatt-hour?
A: 1 kilowatt-hour (kWh) equals 1,000 watt-hours (Wh).

Q3: How do I convert watt-hours to joules?
A: 1 watt-hour equals 3,600 joules (1 W × 3,600 s).

Q4: Why is watt-hour important for batteries?
A: Battery capacity is often rated in watt-hours, indicating how much energy they can store and deliver.

Q5: Can I use this for solar panel calculations?
A: Yes, you can estimate daily energy production by multiplying panel wattage by peak sun hours.