1. What is a kWh per Day Calculator?

Definition: This calculator estimates daily energy consumption in kilowatt-hours (kWh) based on device power and usage time.

Purpose: It helps homeowners and businesses understand electricity usage for better energy management and cost estimation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• kWh/day — Kilowatt-hours consumed per day
• Power — Device power rating in watts
• Hours — Daily usage time in hours

Explanation: The formula converts watt-hours to kilowatt-hours (1 kWh = 1000 Wh) for standard electricity billing units.

3. Importance of Energy Calculation

Details: Understanding daily kWh consumption helps with budgeting electricity costs, sizing solar systems, and identifying energy-saving opportunities.

4. Using the Calculator

Tips: Enter the device's power rating in watts (check the label) and your typical daily usage hours. All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my device's power rating?
A: Check the manufacturer's label (usually in watts) or use a wattmeter for accurate measurement.

Q2: What's the difference between watts and kilowatts?
A: 1 kilowatt = 1000 watts. Electricity bills typically use kWh (kilowatt-hours).

Q3: How can I estimate monthly consumption?
A: Multiply daily kWh by 30 (days) for a rough monthly estimate.

Q4: Does this account for power factor or efficiency?
A: No, this is a basic calculation. For precise measurements, consider power factor and device efficiency.

Q5: What's a typical kWh usage for household appliances?
A: It varies widely - LED bulbs (0.01-0.1 kWh/day), refrigerators (1-2 kWh/day), AC units (3-10 kWh/day).