1. What is the W to Wh Formula?

The W to Wh (Watts to Watt-hours) formula calculates energy consumption by multiplying power in watts by time in hours. It's essential for understanding electrical energy usage over time.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

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

Explanation: This formula converts instantaneous power (watts) to energy consumption (watt-hours) by accounting for how long the power is used.

3. Importance of Energy Calculation

Details: Calculating watt-hours helps estimate electricity costs, size battery systems, and understand appliance energy consumption.

4. Using the Calculator

Tips: Enter power in watts and time in hours. Both values must be positive numbers.

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 (power × time).

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

Q3: Why is this calculation important?
A: It helps estimate electricity bills and compare energy efficiency of devices.

Q4: Can I use this for DC and AC power?
A: Yes, as long as you're using real power (watts) not apparent power (VA).

Q5: How accurate is this calculation?
A: It's mathematically exact, but assumes constant power draw over time.