1. What is kWh Calculation?

kWh (kilowatt-hour) calculation measures electrical energy consumption. It represents the amount of energy used by a device with a power rating of one kilowatt operating for one hour.

2. How Does the Calculator Work?

The calculator uses the kWh formula:

Where:

• \( kWh \) — Energy consumption in kilowatt-hours
• \( P \) — Power in kilowatts
• \( time \) — Time in hours

Explanation: The formula calculates energy consumption by multiplying power (in kilowatts) by time (in hours) and dividing by 1000 to convert to kilowatt-hours.

3. Importance of kWh Calculation

Details: kWh calculation is essential for monitoring electricity usage, calculating energy costs, and managing energy consumption in residential, commercial, and industrial settings.

4. Using the Calculator

Tips: Enter power in kilowatts and time in hours. Both values must be positive numbers. The calculator will compute the energy consumption in kilowatt-hours.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between kW and kWh?
A: kW (kilowatt) measures power (rate of energy use), while kWh (kilowatt-hour) measures energy consumption (amount of energy used over time).

Q2: How do I convert watts to kilowatts?
A: Divide the watt value by 1000. For example, 1500 watts = 1.5 kilowatts.

Q3: Can I use this for DC circuits?
A: Yes, the kWh calculation works for both AC and DC electrical systems as long as power is measured in kilowatts.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise. Accuracy depends on the precision of your power and time measurements.

Q5: Why divide by 1000?
A: We divide by 1000 to convert from watt-hours to kilowatt-hours (1 kWh = 1000 watt-hours).