calculators
Energy Consumption Calculator
Estimate daily and total energy consumption in kWh from power, hours per day, and days of use. Optional cost estimation.
Frequently Asked Questions
How is energy calculated?
Energy (kWh) = Power (kW) x Hours. For example, a 1.5kW device running 4 hours uses 6kWh.
What is a kilowatt-hour?
A kilowatt-hour (kWh) is the unit electricity companies use for billing. It represents 1000 watts used for 1 hour.
Is cost estimation exact?
No. It is an estimate based on the rate you enter. Actual consumption can vary with device behavior, duty cycle, and measurement conditions.