Energy Consumption Formula:
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Definition: This calculator converts power consumption in watts to energy units (kilowatt-hours) based on usage duration.
Purpose: It helps homeowners and businesses estimate electricity consumption and costs for electrical appliances.
The calculator uses the formula:
Where:
Explanation: The power in watts is multiplied by time in hours, then divided by 1000 to convert to kilowatt-hours (kWh).
Details: Accurate energy consumption estimates help in budgeting electricity costs, comparing appliance efficiency, and reducing energy waste.
Tips: Enter the appliance's power rating in watts and the duration of use in hours. Both values must be > 0.
Q1: Where can I find an appliance's wattage?
A: Check the manufacturer's label, specification sheet, or product manual. Some appliances list amps and volts instead (watts = amps × volts).
Q2: How does this relate to my electricity bill?
A: Electricity is typically billed per kWh. Multiply the result by your utility's rate per kWh to estimate cost.
Q3: What's the difference between watts and kilowatt-hours?
A: Watts measure power (rate of energy use), while kilowatt-hours measure energy consumption over time.
Q4: Can I use this for multiple appliances?
A: Calculate each appliance separately, then sum the kWh values for total consumption.
Q5: How accurate is this calculation?
A: It provides theoretical consumption. Actual usage may vary based on power fluctuations, usage patterns, and appliance condition.