1. What is kWh Calculation?

The kWh (kilowatt-hour) calculation determines energy consumption by multiplying power in kilowatts (kW) by time in hours. It's the standard unit for measuring electrical energy usage.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( kWh \) — Kilowatt-hours (energy)
• \( kW \) — Kilowatts (power)
• \( Hours \) — Time duration in hours

Explanation: This formula calculates the total energy consumed when a certain power level is maintained for a specific time period.

3. Importance of kWh Calculation

Details: kWh calculations are essential for understanding energy consumption, calculating electricity costs, and assessing energy efficiency of appliances and systems.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and time in hours. Both values must be positive numbers. For appliances rated in watts, divide by 1000 to convert to kW.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (power × time).

Q2: How do I convert watts to kW?
A: Divide watts by 1000 (1 kW = 1000 watts).

Q3: Can I use minutes instead of hours?
A: Yes, but convert minutes to hours by dividing by 60 (30 minutes = 0.5 hours).

Q4: How is kWh used in electricity bills?
A: Utilities charge per kWh consumed. Your bill multiplies total kWh by the rate per kWh.

Q5: What's a typical kWh consumption for household appliances?
A: It varies widely - a 100W bulb running 10 hours uses 1 kWh, while an AC unit might use 3-5 kWh per hour.