Skip to content
Log in Calculators

Gasoline Generator Fuel Consumption

Gallons per hour, tank runtime, and cost per hour for a gasoline portable or standby set.

Inputs

Inputs and assumptions

Small gasoline engines run 0.55 to 0.70 lb per brake horsepower-hour.

Gasoline is about 6.1 lb per gallon, and blends with ethanol vary.

Result

Fuel cost per hour
—
Fuel at this load
—
Electrical energy per gallon
—
Refuels needed to run 24 hours
—
Runtime on one tank
—

What to check

  • Tank capacity in the manual, not the brochure
  • Real load fraction during an outage

Related calculators

Fuel figures are estimator-grade. A manufacturer fuel curve at your load and ambient beats any generic curve; verify the nameplate rating, the actual load fraction, and the delivered fuel price before you size a tank or promise a runtime.

Saved calculations

Keep the assumptions with the result.

Save this calculation to return to the inputs, result, and report anytime.

Sign in to save Create account

Sign in or create an account to save this calculation.