Home
Back
Energy Formula:
| From: | To: |
Energy calculation determines the amount of electrical energy consumed over a period of time. It is typically measured in kilowatt-hours (kWh), which represents the energy used by a 1,000-watt appliance running for one hour.
The calculator uses the energy formula:
Where:
Explanation: This formula converts the product of power and time from watt-hours to the more commonly used kilowatt-hours by dividing by 1000.
Details: Calculating energy consumption is essential for understanding electricity usage patterns, estimating utility costs, and promoting energy efficiency in both residential and commercial settings.
Tips: Enter power consumption in watts and time duration in hours. Both values must be positive numbers. The result will be displayed in kilowatt-hours (kWh).
Q1: Why divide by 1000 in the formula?
A: Dividing by 1000 converts the result from watt-hours to kilowatt-hours, which is the standard unit for measuring electrical energy consumption on utility bills.
Q2: Can I use this for DC and AC circuits?
A: Yes, this formula works for both DC and AC circuits when using the appropriate power measurement (real power for AC circuits).
Q3: What's the difference between power and energy?
A: Power is the rate of energy consumption (watts), while energy is the total amount consumed over time (watt-hours or kilowatt-hours).
Q4: How accurate is this calculation for estimating electricity costs?
A: The calculation provides accurate energy consumption data, but actual costs depend on your electricity rate structure and any additional fees from your utility provider.
Q5: Can I calculate energy for multiple appliances?
A: For multiple appliances, calculate each one separately and sum the results, or use the total power consumption if all appliances run simultaneously.