Energy Consumption Formula:
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This calculator converts power consumption of a 10-watt device over a period of time into kilowatt-hours (kWh), the standard unit of energy used by electric utilities for billing purposes.
The calculator uses the energy consumption formula:
Where:
Explanation: The formula calculates the total energy consumed by multiplying power (10W) by time (hours) and converting to kilowatt-hours.
Details: Understanding energy consumption helps estimate electricity costs, compare device efficiency, and manage energy usage for sustainability.
Tips: Enter the total usage time in hours (can be decimal for partial hours). The calculator will compute the total energy consumed in kilowatt-hours.
Q1: Why convert watts to kilowatt-hours?
A: Electric utilities bill by kilowatt-hour, so this conversion helps estimate costs from device power ratings.
Q2: How much does 10 watts cost to run?
A: At $0.12 per kWh, 10 watts costs about $0.0012 per hour, $0.0288 per day, or $8.64 per month if running continuously.
Q3: What devices use about 10 watts?
A: Examples include LED bulbs, phone chargers, small fans, or WiFi routers in standby mode.
Q4: How accurate is this calculation?
A: It assumes constant 10W draw. Actual consumption may vary with device usage patterns and power fluctuations.
Q5: Can I calculate for other wattages?
A: For different wattages, simply replace "10" in the formula with your device's wattage.