Power Consumption Formula:
From: | To: |
The kilowatt-hour (kWh) is a unit of energy equal to one kilowatt (1 kW) of power expended for one hour (1 h) of time. It is commonly used as a billing unit for energy delivered to consumers by electric utilities.
The calculator uses the simple formula:
Where:
Explanation: This formula calculates the total energy consumed by multiplying the power rating of an appliance by the number of hours it operates.
Details: Calculating kWh is essential for estimating electricity costs, understanding energy consumption patterns, and making informed decisions about energy efficiency.
Tips: Enter the power rating in kilowatts (kW) and the operating time in hours. Both values must be positive numbers.
Q1: How do I convert watts to kilowatts?
A: Divide the watt value by 1000 (1 kW = 1000 W). For example, 1500W = 1.5kW.
Q2: Can I use this for appliances with variable power consumption?
A: This calculator provides an estimate. For variable loads, you may need to calculate average power consumption over time.
Q3: How accurate is this calculation for estimating electricity bills?
A: It provides a good estimate, but actual bills may include additional charges like taxes, fixed fees, or tiered pricing.
Q4: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (total consumption over time).
Q5: Can I calculate monthly energy consumption with this calculator?
A: Yes, simply multiply daily consumption by 30 or use average daily hours of operation for monthly estimates.