Energy Calculator
Calculate the energy consumption in watt-hours (Wh) by entering the power in watts (W) and the time in hours (h).
Energy Calculation Parameters
Energy Calculation Formula
The energy (in watt-hours) is calculated by multiplying the power (in watts) by the time (in hours).
Common Appliance Energy Consumption (per hour)
| Appliance | Energy (Wh) |
|---|---|
| LED Light Bulb | 10 Wh |
| Laptop | 50 Wh |
| Desktop Computer | 200 Wh |
| Refrigerator | 150 Wh |
| Microwave | 1200 Wh |
Frequently Asked Questions
What is a watt-hour?
A watt-hour (Wh) is a unit of energy equal to one watt of power expended for one hour of time. It is commonly used to measure energy consumption in electrical systems.
How do you convert watt-hours to kilowatt-hours (kWh)?
To convert watt-hours to kilowatt-hours, you divide by 1,000. For example, 5,000 Wh is equal to 5 kWh. Utility companies typically bill customers based on kilowatt-hours.
What is the difference between power and energy?
Power is the rate at which energy is used or generated (measured in watts). Energy is the total amount of work done (measured in watt-hours). For example, a 100-watt light bulb uses 100 watts of power, and in 2 hours, it consumes 200 watt-hours of energy.