Energy use calculator
Estimate energy consumption from power and running time.
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Your measurements
Enter your project values. Your estimate updates as you type.
View your estimateExample values are a starting point. Check product yields and specifications before ordering.
YOUR ESTIMATE
Energy use
90kWh
Running time90 hours
Calculated from your measurements.
How it's calculated
Energy (kWh) = power (W) ÷ 1000 × hours per day × days.
Calculations use consistent units for your selected measurements. Whole purchase quantities are rounded up.
What this estimate includes
Assumes constant power while running. Cycling appliances should use effective runtime or measured average power.
Quantity and arithmetic estimates only. Use project specifications for installation and design requirements.
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