Engineering tools
Six practical calculators for initial power system and generator planning. Each tool shows its inputs and assumptions.
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From load data to capacity planning
Start with load power and power factor, then estimate current and required capacity. Use manufacturer consumption data to plan fuel demand and tank runtime. Each calculator exposes its inputs, units and calculation assumptions.
kW / kVA calculator
Convert real and apparent power using your power factor.
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Current calculator
Find single or three phase load current from power, voltage and power factor.
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Fuel consumption calculator
Estimate diesel use from your generator model’s fuel table and load.
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Tank runtime calculator
Calculate runtime from usable tank volume and hourly fuel consumption.
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Generator sizing calculator
Find a steady state generator rating from load, power factor and target utilization.
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ATS sizing calculator
Choose a transfer switch ampere rating from load current and design factor.
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