1. What is an Energy Consumption Calculator?

Definition: This calculator estimates the energy usage in kilowatt-hours (kWh) based on power consumption 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 consumption (watts)
• \( t \) — Time of usage (hours)

Explanation: The power consumption multiplied by time gives watt-hours, which is then converted to kilowatt-hours by dividing by 1000.

3. Importance of Energy Consumption Calculation

Details: Understanding energy usage helps in budgeting electricity costs, identifying energy-efficient appliances, and reducing carbon footprint.

4. Using the Calculator

Tips: Enter the power consumption in watts and usage time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the power consumption of an appliance?
A: Check the appliance's label, manual, or specifications sheet for wattage information.

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

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

Q4: Does this account for standby power consumption?
A: No, this calculates active usage. For complete energy accounting, consider standby power separately.

Q5: What's a typical power consumption for household appliances?
A: LED bulbs: 5-15W, Laptop: 50W, Refrigerator: 100-400W, AC unit: 1000-5000W.