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

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.

August 12, 2025

Guilty plea resolves fraud investigation related to Hurricane Ida recovery

A guilty plea in a Baton Rouge criminal court closes the investigation into a fraud case related to the recovery process following Hurricane Ida in 2021.


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