Energy Formula:
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Definition: This calculator converts power in kilowatts (kW) to energy in kilowatt-hours (kWh) by factoring in time.
Purpose: It helps determine electrical energy consumption or production based on power rating and operating duration.
The calculator uses the formula:
Where:
Explanation: Energy equals power multiplied by time. 1 kWh equals 1 kW of power used for 1 hour.
Details: This conversion is essential for electricity billing, energy monitoring, and sizing solar power systems.
Tips: Enter the power in kilowatts and time in hours. Both values must be positive numbers.
Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (total consumption over time).
Q2: How do I convert minutes to hours for the time input?
A: Divide minutes by 60 (e.g., 30 minutes = 0.5 hours).
Q3: Can I use this for DC circuits?
A: Yes, the calculation works the same for both AC and DC power.
Q4: What if my appliance power is in watts?
A: Convert watts to kW by dividing by 1000 (e.g., 1500W = 1.5kW).
Q5: How accurate is this calculation?
A: It's mathematically precise for constant power draw. For variable loads, use an energy meter.