1. What is a kWh to Unit Calculator?

Definition: This calculator converts power consumption in kilowatts (kW) to energy units in kilowatt-hours (kWh) based on time duration.

Purpose: It helps determine electrical energy consumption for appliances, devices, or systems over a specific time period.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy in kilowatt-hours (kWh)
• \( P \) — Power in kilowatts (kW)
• \( t \) — Time in hours (h)

Explanation: Energy consumption is calculated by multiplying the power rating of the device by the number of hours it operates.

3. Importance of Energy Calculation

Details: Understanding energy consumption helps in estimating electricity costs, sizing solar systems, and improving energy efficiency.

4. Using the Calculator

Tips: Enter the device's power consumption in kW and the operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert watts to kW?
A: Divide the wattage by 1000 (1 kW = 1000 W). For example, 1500W = 1.5 kW.

Q2: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (total consumption over time).

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

Q4: What's a typical power rating for household appliances?
A: Refrigerator: 0.1-0.2 kW, LED TV: 0.05-0.1 kW, Air Conditioner: 1-3.5 kW.

Q5: Can I use this for solar system sizing?
A: Yes, this helps determine your daily energy needs which is the first step in solar system design.