1. What is Electric kWh Calculator?

The Electric kWh Calculator estimates energy consumption in kilowatt-hours based on the power rating of an electrical device and the duration of its usage. It helps users understand and manage their electricity consumption and costs.

2. How Does the Calculator Work?

The calculator uses the energy consumption formula:

Where:

• \( Watts \) — Power consumption of the device in watts
• \( Hours \) — Duration of usage in hours
• \( 1000 \) — Conversion factor from watts to kilowatts

Explanation: This formula converts the power consumption from watts to kilowatts and multiplies by the time in hours to calculate total energy consumption.

3. Importance of kWh Calculation

Details: Calculating kWh is essential for understanding electricity bills, estimating energy costs, managing energy consumption, and making informed decisions about energy-efficient appliances.

4. Using the Calculator

Tips: Enter the power consumption in watts (found on device labels or specifications) and the usage time in hours. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between watts and kilowatt-hours?
A: Watts measure power (rate of energy use), while kilowatt-hours measure energy consumption (power × time).

Q2: How can I find the wattage of my appliance?
A: Check the manufacturer's label, user manual, or specifications sheet. Most appliances have wattage information printed on them.

Q3: Can I calculate monthly electricity cost using this?
A: Yes, multiply the kWh result by your electricity rate (cost per kWh) to estimate the cost.

Q4: What is a typical kWh consumption for household appliances?
A: It varies widely - LED bulbs (5-15W), refrigerators (100-400W), air conditioners (800-3500W), etc.

Q5: Why divide by 1000 in the formula?
A: To convert watts to kilowatts (1 kilowatt = 1000 watts), since electricity is typically billed in kilowatt-hours.