1. What is kWh?

A kilowatt-hour (kWh) is a unit of energy that represents the amount of electricity consumed by a device with a power rating of one kilowatt (1000 watts) operating for one hour. It's the standard unit used by electric utilities for billing purposes.

2. How Does the Calculator Work?

The calculator uses the basic energy formula:

Where:

• \( kWh \) — Kilowatt-hours (energy consumption)
• \( P \) — Power in watts (W)
• \( t \) — Time in hours (h)
• 1000 — Conversion factor from watts to kilowatts

Explanation: The formula converts power consumption over time into standard energy units used for electricity billing.

3. Importance of kWh Calculation

Details: Calculating kWh helps estimate energy costs, compare appliance efficiency, and understand electricity consumption patterns for better energy management.

4. Using the Calculator

Tips: Enter power in watts and time in hours. All values must be positive numbers. The calculator will automatically convert to kWh.

5. Frequently Asked Questions (FAQ)

Q1: How many kWh is 1000 watts for 1 hour?
A: Exactly 1 kWh (1000 watts × 1 hour ÷ 1000 = 1 kWh).

Q2: How do I convert kWh to cost?
A: Multiply kWh by your electricity rate (e.g., 10 kWh × $0.15/kWh = $1.50).

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

Q4: How can I reduce my kWh consumption?
A: Use energy-efficient appliances, turn off unused devices, and optimize usage during off-peak hours.

Q5: Is this calculator accurate for all devices?
A: It works for devices with constant power draw. For variable loads, more complex calculations are needed.