1. What is kWh Calculation from Watts?

Definition: This calculator converts power in watts to energy in kilowatt-hours based on usage time.

Purpose: It helps determine electrical energy consumption for devices or systems, useful for energy monitoring and cost calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• kWh — Energy in kilowatt-hours
• W — Power in watts
• t — Time in hours

Explanation: Power (watts) multiplied by time (hours) gives watt-hours, which is then divided by 1000 to convert to kilowatt-hours.

3. Importance of kWh 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 watts and the operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find a device's wattage?
A: Check the label or specifications. For appliances, it's often listed as "W" or "watts."

Q2: Can I use minutes instead of hours?
A: Yes, but convert minutes to hours (divide by 60) before entering the value.

Q3: What's the difference between kW and kWh?
A: kW is power (rate of energy use), kWh is energy (power × time).

Q4: How can I estimate my electricity cost from kWh?
A: Multiply kWh by your electricity rate (per kWh) from your utility bill.

Q5: Why divide by 1000?
A: To convert from watt-hours (Wh) to kilowatt-hours (kWh), as 1 kWh = 1000 Wh.