Energy Calculation Formula:
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The Watts to Units converter calculates energy consumption in kilowatt-hours (kWh) from power in watts and time in hours. This conversion is essential for understanding electricity usage and calculating energy costs.
The calculator uses the energy formula:
Where:
Explanation: The formula converts watt-hours to kilowatt-hours by dividing by 1000 (since 1 kilowatt = 1000 watts).
Details: Calculating energy consumption helps in estimating electricity costs, comparing appliance efficiency, and understanding power usage patterns for better energy management.
Tips: Enter power in watts (check appliance labels) and duration in hours. For accurate results, use actual measured values when possible.
Q1: How do I find the wattage of my appliance?
A: Check the label or specification sheet of the device. Many appliances list their power consumption in watts.
Q2: What's the difference between watts and kilowatt-hours?
A: Watts measure power (rate of energy use), while kilowatt-hours measure energy (power × time).
Q3: How can I estimate my electricity bill with this?
A: Multiply the kWh result by your electricity rate (cost per kWh) to estimate cost for that device.
Q4: Does this work for DC and AC power?
A: Yes, as long as you use the correct wattage value. Note that some AC devices list VA (volt-amps) instead of watts.
Q5: What's a typical kWh consumption for household items?
A: LED bulb: 0.01 kWh/hour, Laptop: 0.05 kWh/hour, Refrigerator: 0.1-0.2 kWh/hour (varies by model and usage).