Generator Fuel Runtime Calculator
How long will the generator run on its tank? Estimate diesel runtime from kW × load percent × tank size, or natural-gas BTU/hr demand for utility-supplied gaseous standby.
Estimated runtime
37.0 hours(1.5 days)
Fuel consumption ≈ 5.40 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.
Need NFPA 110 fuel-storage compliance?
NFPA 110 Class 96 (96 hours of fuel at full load) and other class designations have specific tank sizing implications. Our team handles AHJ submittal packages.