Do you mean common table salt? Are we talking U.S gallons? If this is not your question, please clarify and resubmit.
1 U.S. gallon of water weighs 8.32487 pounds, or 133.198 ounces. Table salt (in crystal form, as in your salt shaker) has a specific gravity of 1.154, which gives about 154 ounces.
0.42 gallon equals 53.76 fluid ounces.
1 US gallon = 128 fluid ounces
1 US gallon equals 128 US fluid ounces
128 fluid ounces per US gallon.
128 oz
1 US gallon is 128 ounces
128 fluid ounces
128 ounces in a gallon
There are 64 fluid ounces in one half gallon.
128 liquid ounces in a gallon of water.
Answer64 fluid ounces equals one half gallon.
128 fluid ounces is equal to 1 gallon.