http://mariojpcsimon.blogspot.com/2012/02/medidas-y-tamanos-para-ars-magica.html
Here i made one equivalency method to helpme to play, to create characters and to make spells & magical objects. To no english speakers the system of measurement is alittle confusing.
Interesting calculations;
You give the pace as 0,8 m. Yet I thought the ArM pace was intended as a Roman "double" pace of 5 feet... Can anyone clarify the intention?
Also, for the very large volumes, I would find it more intuitive to get an answer in cubic meters rather than liters (just makes for smaller numbers)
I don't know where you got the idea a pace was 5 feet. A pace is 3 feet... for instance in the sidebar Targets and Sizes a Boundary is defined as being "one hundred paces (three hundred feet) in diameter."
Edit: To the original poster, I honestly think, given the rough scale of things anyway, you can get away with defining a pace as a meter. The additional 3 inches shouldn't break anything IMO and it's probably clearer to non-English speaking players.
It's a good idea to have that translated (though I would have preferred a tranlation into English), especially for weights and cubic stuff.
I want to point out that there are of course no fixed paces in Medieval Europe. I'm wondering if a pace depends on how long the legs of the caster are:
Barbie ex Jerbiton won the Wizard's war because Thurin ex Merinita had darf blood, and was blasted before he could throw his own pofs.
You should probably add a volumebased Base Individual for Auram as well.
Yeah, that´s just a tiny stretch and it makes things oh so much easier in the long run. Have played with that since longer than i can remember and it works perfectly good.
Thanks by your responses.
The litters are parte for one easier personal display: it's easy to me if i imagine a bunch of modern and daily milk tetrabricks (r) and no m3, more visual.
The Auram and volume is not really needed, only because the Auram base talks to a phenomeno that covers one area and not that it fit on one closed space.
To the reference to the pace, hre my fount, wikipedia (like ever i admit), and usin my ones calculations nto see the realtion:
[quote]
A pace in modern terminology is usually taken as being a single pace rather than a double pace. It has no formal definition but is taken as being around 30 inches (800 mm)./quote]
I'll add the note about the sizes for birds.
Amd, true i could round off the pace to 1 metre, but i am too methodical sometimes. And knowing now this thing i could round off, but only after be sure about this.
I know, and i always considered that a major mistake.
Lets see then here, i´ve got 160 by 160m to play with, how about i use that to create a typhoon, 10 miles high, which i then use a small ReAu on, still just 1 Base individual needed, and turn it sideways.
Now i´ve got a magically controlled 16km long spear made up from a typhoon. Your move, if you can still stand in the middle of that typhoon that is... 
Yeah... the strange thing is that... The more fluid thing of all (the wind has this things)