Energy Formula:
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Definition: This calculator converts power in kilowatts (kW) to energy in kilowatt-hours (kWh) based on time of usage.
Purpose: It helps determine electrical energy consumption for billing, energy monitoring, and electrical system design.
The calculator uses the formula:
Where:
Explanation: Energy consumption equals power multiplied by time. One kWh equals one kilowatt of power used for one hour.
Details: Accurate energy calculations help in utility billing, energy efficiency assessments, and electrical system sizing.
Tips: Enter the power in kilowatts and time in hours. Both values must be > 0. The result shows energy in kilowatt-hours (units).
Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (power × time).
Q2: How do I convert watts to kilowatts?
A: Divide watts by 1000 (1 kW = 1000 W).
Q3: Can I use minutes instead of hours?
A: Yes, but convert minutes to hours (divide by 60) before entering.
Q4: How is this used for electricity bills?
A: Utilities charge per kWh (unit). This calculates your consumption.
Q5: What's a typical household appliance consumption?
A: A 1 kW device running for 1 hour = 1 kWh. A 100W bulb for 10 hours = 1 kWh.