1. What is the kWh Calculation?

The kilowatt-hour (kWh) calculation converts power consumption in watts to energy usage in kilowatt-hours by factoring in the duration of usage. This is the standard unit for measuring electricity consumption.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( kWh \) — Kilowatt-hours (energy)
• \( W \) — Power in watts
• \( h \) — Time in hours

Explanation: Since 1 kilowatt equals 1000 watts, we divide by 1000 to convert watt-hours to kilowatt-hours.

3. Importance of Energy Calculation

Details: Calculating kWh is essential for understanding electricity usage, estimating utility bills, comparing appliance efficiency, and sizing solar power systems.

4. Using the Calculator

Tips: Enter the device's power consumption in watts and the duration of use in hours. For devices rated in kW, multiply by 1000 to convert to watts first.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my appliance's wattage?
A: Check the label or manual. If only amps and volts are listed, multiply them (W = A × V).

Q2: What's the difference between watts and kilowatt-hours?
A: Watts measure power (rate of energy use), while kWh measure total energy consumed over time.

Q3: How much does 1 kWh cost?
A: Costs vary by location and provider, typically $0.10-$0.30 per kWh in the US.

Q4: Can I use this for solar panel calculations?
A: Yes, this helps estimate how many kWh your panels need to produce to power devices.

Q5: How accurate is this calculation?
A: It's precise for constant loads. For variable loads, use an energy monitor for accurate measurement.