Kwh From Watts Formula:
From: | To: |
The kWh (kilowatt-hour) from watts calculation converts power consumption in watts to energy usage in kilowatt-hours. This is essential for understanding electricity consumption and calculating energy costs.
The calculator uses the formula:
Where:
Explanation: The formula converts watt-hours to kilowatt-hours by dividing by 1000 (since 1 kilowatt = 1000 watts).
Details: Calculating kWh is crucial for estimating electricity costs, comparing appliance efficiency, and understanding energy consumption patterns.
Tips: Enter power in watts and time in hours. Both values must be positive numbers. The result shows energy consumption in kilowatt-hours.
Q1: Why convert watts to kWh?
A: Electricity bills are calculated in kWh, so converting helps estimate costs from appliance power ratings.
Q2: What's the difference between watts and kWh?
A: Watts measure power (instantaneous rate), while kWh measures energy (power × time).
Q3: How accurate is this calculation?
A: It's accurate for constant power draw. For variable loads, more complex calculations are needed.
Q4: Can I use this for solar panel calculations?
A: Yes, it can estimate energy production from solar panel wattage and sunlight hours.
Q5: How does this relate to electricity costs?
A: Multiply kWh by your electricity rate (per kWh) to estimate costs.