What is the conversion rate for a gallon of CNG, LNG, and LPG?


The gasoline gallon equivalent for compressed natural gas shall be equal to 5.660 pounds of compressed natural gas. The diesel gallon equivalent for liquefied natural gas shall be equal to 6.060 pounds of liquefied natural gas. The gasoline gallon equivalent for liquefied petroleum gas shall be an energy equivalent rate equal to seventy-three percent of the state tax per gallon on gasoline and diesel fuel.

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News & Announcements

September 02, 2025

Hunters get a tax break during the 2nd Amendment Weekend Sales Tax Holiday, Sept. 5-7

BATON ROUGE – Consumer purchases of firearms, ammunition and a wide range of hunting supplies are exempt from state and local sales tax during the Louisiana Second Amendment Weekend Sales Tax Holiday, Friday, Sept. 5 through Sunday, Sept. 7.

August 26, 2025

LDR partners with OMV in Lafayette to resolve driver’s license suspensions

BATON ROUGE – The Louisiana Department of Revenue (LDR) is partnering with the state Office of Motor Vehicles (OMV) to help Lafayette-area taxpayers resolve driver’s license suspensions.

August 25, 2025

New Orleans-area suspects arrested; products seized in crackdown on illegal vapes

BATON ROUGE – A state task force arrested four people and confiscated tens of thousands of banned substances in the second phase of a statewide crackdown on illegal and unauthorized vape products.


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