1. What is kWh per Month?

kWh per month (kilowatt-hours per month) is a unit of energy that represents the amount of electricity consumed over a month. It's the standard measurement used by utility companies for billing purposes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Power consumption in watts (W)
• \( h_{day} \) — Hours of usage per day
• 30 — Average number of days in a month
• 1000 — Conversion factor from watts to kilowatts

Explanation: The formula calculates total energy consumption by multiplying power by time, then converts to kilowatt-hours.

3. Importance of Energy Calculation

Details: Calculating monthly energy consumption helps estimate electricity costs, compare appliance efficiency, and plan energy-saving measures.

4. Using the Calculator

Tips: Enter the device's power rating in watts (found on the label) and your average daily usage in hours. For multiple devices, calculate each separately and sum the results.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts and kilowatt-hours?
A: Watts measure power (energy per second), while kilowatt-hours measure energy consumption over time (power × time).

Q2: How can I reduce my monthly kWh consumption?
A: Use energy-efficient appliances, turn off unused devices, utilize natural lighting, and adjust thermostat settings.

Q3: Why divide by 1000 in the formula?
A: This converts watt-hours to kilowatt-hours (1 kW = 1000 W), the standard unit for electricity billing.

Q4: Is 30 days accurate for all months?
A: It's an approximation. For precise calculations, use actual days in the month (28-31).

Q5: How do I estimate annual consumption?
A: Multiply monthly kWh by 12, or use 365 days instead of 30 in the formula.