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Data Center Generator Fuel Runtime Calculator

Estimate standby generator operating hours from usable fuel volume and a manufacturer-entered fuel consumption rate at the chosen load.

Inputs

System inputs

Range: 0.1–1,000,000,000 US gal

Enter fuel available for generator use in US gallons after unusable volume, reserve policy, and transfer limits are excluded.

Range: 0.01–1,000,000 US gal/h

Enter the manufacturer or measured fuel burn in US gal/h at the selected generator load and operating condition. Do not use an idle or different-load value.

Result

Estimated runtime (days)
2.78
Estimated runtime (h)
66.67

Formula

Calculation logic

Formula definitions and substituted values.

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Screening tool. Verify the result against the manufacturer's published rating, the actual equipment, route, floor, and applicable local requirements before ordering, installing, or relying on it.