Units of Measurement

[Quintalian]

My curiosity is piqued regarding the standard units of measurement used in Eorzea. I recognize several of them from FFXI but have never had a solid definition of any of them. As far as I recall, these are the units used:

Length (from shortest to longest): ilm, fulm, yalm, malm
Mass (from least to most): onze, ponze, tonze

The name of each unit seems to resemble that of an equivalent unit from the United States customary system. However, should we assume the relation of these units to each other is also meant to draw from that system?

I do not recall having encountered any measurement of volume in either game. Does such a thing exist? Are there other units of measurement I may have missed?

[Urthdigger]

I'd assume that yes, we should compare them to the equivalent US measurements. This is mostly because of a number of references used in both FFXI and FFXIV, just as fulm-long sub, "I would walk 5000 malms", and other such things.

[JGwinters]

1 Ilm (Im) = 2.54 cm
1 Fulm (Fm) = 12 Ilm = 30.48 cm
1 Yalm (Ym) = 3 Fulm = 0.9144 meters
1 Malm (Mm) = 1,760 Yalm = 1,609 meters

1 Onz (Oz) = 28.35 grams
1 Ponz (Pz) = 16 Onz = 453.6 grams
1 Tonz (Tz) = 2,000 Ponz = 907.2 grams

I think it was a post here at loc. Or possibly a translation in Reinheart's thread? Anyway, there you have it.

[Anonymoose]

The US is one of only three countries (others being Liberia and Myanmar) that have not converted to the metric system. I imagine the US system fits in quite well with fantasy things abroad, lol.

/facepalm