• randint@lemmy.frozeninferno.xyz
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    6 months ago

    They don’t sell milk or soy milk in gallons. The soy milk I got was 936 mL. 936 mL is 0.2472 gallons, which just so happens to be close to a quarter gallon. A quarter gallon is closer to 946 mL.

    When I wrote the previous comment, I actually thought that 936 mL was exactly 1/4 gallons, and it did surprise me. The tool I used to convert units rounded the result to 2 decimal places.

    • idiomaddict@feddit.de
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      6 months ago

      That’s even stranger! Do you have any idea why? Is there maybe a pre-metric system measurement that’s closer?

      Or maybe soy milk is just 6.4% less dense than water and it’s a kilogram

      • randint@lemmy.frozeninferno.xyz
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        6 months ago

        I tried to look it up, but I couldn’t find any convincing answers. I did find one answer saying it has to do with the milk’s density, but the density is about 1.03 (both dairy and soy milk) and when you run the numbers you get that 936 mL is only 0.964 kg.

        There is also no pre-metric units for volume, so that isn’t it either. Also, some other milk brands sell their milk in 930 mL, 1857 mL, 1858 mL or some other really arbitrary number.

        My guess is that it’s close enough to a full liter so that the customers buy this thinking they got a liter of milk.