1. What is the Watts to Hours Calculation?

The Watts to Hours calculation determines how long a device can run given its energy storage (in watt-hours) and power consumption (in watts). This is essential for battery life estimation and energy management.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

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

Explanation: This formula divides the total available energy by the rate of energy consumption to determine runtime.

3. Practical Applications

Details: This calculation is used for battery-powered devices, solar power systems, UPS backup time estimation, and any scenario where you need to know how long an energy source will last given a specific power draw.

4. Using the Calculator

Tips: Enter energy in watt-hours (Wh) and power in watts (W). Both values must be positive numbers. The result will show the estimated runtime in 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 (power × time).

Q2: How accurate is this calculation?
A: It provides theoretical maximum runtime. Actual runtime may be less due to efficiency losses and other factors.

Q3: Can I use this for battery capacity calculations?
A: Yes, this is commonly used to estimate battery life based on its Wh rating and device power consumption.

Q4: What if my device power varies?
A: Use average power consumption for estimation, or calculate runtime for different power modes separately.

Q5: How do I convert amp-hours to watt-hours?
A: Multiply amp-hours (Ah) by battery voltage (V) to get watt-hours (Wh).