1. What is the Watts to Hours Calculation?

The Watts to Hours calculation determines how long an electrical appliance can run based on its energy capacity (watt-hours) and power consumption (watts). This is particularly useful for UK appliances to estimate runtime on battery power or energy storage.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

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

Explanation: The formula divides the total energy available by the rate at which energy is being consumed to determine how long the energy will last.

3. Importance of Time Calculation

Details: This calculation is essential for energy planning, battery sizing, and understanding appliance runtime. It helps UK consumers estimate how long their devices will operate on stored energy.

4. Using the Calculator

Tips: Enter watt-hours (energy capacity) and power consumption in watts. Both values must be positive numbers. The calculator will output 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). 100W for 10 hours = 1000Wh.

Q2: How accurate is this calculation for UK appliances?
A: It provides a theoretical maximum. Real-world results may vary due to efficiency losses, power fluctuations, and UK voltage standards.

Q3: Can I use this for solar calculations?
A: Yes, it can estimate how long a solar battery will last, but remember UK weather affects solar generation.

Q4: What's a typical watt-hour rating for UK appliances?
A: Phone batteries: 10-20Wh, laptops: 30-100Wh, home batteries: 5000-15000Wh.

Q5: How does UK voltage affect this calculation?
A: The calculation works the same, but UK's 230V standard means appliances may draw different currents than 110V countries.