1. What is a Power Consumption Calculator?

Definition: This calculator estimates the energy consumption of electrical devices based on their power rating and usage time.

Purpose: It helps homeowners and businesses understand their electricity usage and estimate energy costs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy consumption (kilowatt-hours)
• \( P \) — Power rating of the device (watts)
• \( t \) — Time of usage (hours)

Explanation: The power in watts multiplied by time in hours gives watt-hours, which is then divided by 1000 to convert to kilowatt-hours (kWh).

3. Importance of Power Consumption Calculation

Details: Understanding energy consumption helps in budgeting electricity costs, comparing appliance efficiency, and reducing energy waste.

4. Using the Calculator

Tips: Enter the device's power rating in watts and the duration of use in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find a device's power rating?
A: Check the label on the device, manufacturer specifications, or use a wattmeter to measure actual consumption.

Q2: How do I calculate monthly energy consumption?
A: Multiply the daily kWh result by the number of days the device is used per month.

Q3: How can I estimate electricity costs from this?
A: Multiply the kWh result by your electricity rate (cost per kWh from your utility bill).

Q4: What's the difference between watts and kilowatts?
A: 1 kilowatt = 1000 watts. Utility companies bill in kilowatt-hours.

Q5: Do devices consume power when turned off?
A: Some devices have "phantom loads" - consider using smart power strips for complete shutoff.