§ 194.231 - Conversion between metric and U.S. units.

When liters are converted to wine gallons, the quantity in liters shall be multiplied by 0.264172 to determine the equivalent quantity in wine gallons. Cases containing the same quantity of spirits of the same proof in metric bottles may be converted to U.S. units by multiplying the liters in one case by the number of cases to be converted, as follows:

(a) If the conversion from liters to U.S. units is made before multiplying by the number of cases, the quantity in U.S. units shall be rounded to the sixth decimal.

(b) If the conversion is made after multiplying by the number of cases, the quantity in U.S. units shall be rounded to the nearest hundredth.

Once converted to wine gallons, the proof gallons of spirits in cases shall be determined as provided in 27 CFR 30.52.