Does anybody have any tips for remembering this customary capacity so i don't always have to look agh this chart?

I suggest reading them over and over again to remember them. I know it sounds annoying, but trust me, it'll pay off.

You can remember this by imagining this: King Gallon married 4 queens. Each of these 4 queens gave birth to 2 princesses. Each princess owned 2 crowns and each crown had 8 fleur-de-lis designs hidden on the crown. Hope this helps ^-^

It is 94.7% that uses the metric system