1. What is a kWh Calculator?

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

Purpose: It helps homeowners, businesses, and energy professionals calculate electricity usage for billing, energy audits, or equipment sizing.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• kWh — Kilowatt-hours (energy consumption)
• kW — Kilowatts (power rating)
• h — Hours (duration of use)

Explanation: Energy consumption equals power multiplied by time. 1 kWh equals using 1 kW of power for 1 hour.

3. Importance of kWh Calculation

Details: Understanding kWh helps estimate electricity costs, compare appliance efficiency, and manage energy consumption.

4. Using the Calculator

Tips: Enter the power rating in kW and duration in hours. For watts, divide by 1000 to get kW (e.g., 1500W = 1.5kW).

5. Frequently Asked Questions (FAQ)

Q1: How do I convert watts to kW?
A: Divide watts by 1000 (1 kW = 1000W). Example: 1500W = 1.5kW.

Q2: How do I calculate monthly kWh?
A: Multiply daily kWh by number of days, or calculate each device separately and sum them.

Q3: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), kWh measures energy (total consumption over time).

Q4: How can I estimate appliance power?
A: Check nameplate ratings or use a watt meter. Typical values: LED bulb (10W), fridge (100-400W), AC (1000-3500W).

Q5: How do I calculate cost from kWh?
A: Multiply kWh by your electricity rate (e.g., 15kWh × $0.12/kWh = $1.80).