Electricity Usage Formula:
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Definition: This calculator estimates the electricity consumption in kilowatt-hours (kWh) based on appliance power and usage time.
Purpose: It helps Australian households and businesses estimate their electricity consumption and costs.
The calculator uses the formula:
Where:
Explanation: The power consumption is multiplied by usage time and divided by 1000 to convert watt-hours to kilowatt-hours.
Details: Understanding electricity usage helps with budgeting, identifying energy-hungry appliances, and reducing electricity bills.
Tips: Enter the appliance power in watts and usage time in hours. Both values must be > 0.
Q1: Where can I find an appliance's power rating?
A: Check the manufacturer's label, specifications, or user manual. It's usually listed in watts (W) or kilowatts (kW).
Q2: How do I calculate daily usage for multiple appliances?
A: Calculate each appliance separately and sum the results, or use our Multi-Appliance Calculator.
Q3: What's the average electricity cost in Australia?
A: Rates vary by state and provider (typically $0.20-$0.40 per kWh). Check your energy bill for exact rates.
Q4: Does standby power consumption matter?
A: Yes! Many appliances draw power even when off. Consider using a power meter to measure actual consumption.
Q5: How can I reduce my electricity usage?
A: Use energy-efficient appliances, turn off unused devices, and consider solar power options.