A Roman unit of length, = 120 pedes, about 35.48 meters, in concept the length of the furrow plowed by a team of oxen before turning. As a unit of land area, 120 pedes by 4 pedes.

Actus minimus (ut ait M. Varro) latitudinus pedes quattor, longitudinus habet pedes CXX.

The smallest actus (as M. Varro says) is 4 pedes wide and 120 pedes long.

Lucius Junius Moderatus Columella. On Agriculture. Book 5, 1, 5.


The actus quadratus, a Roman unit of land area, a square 120 pedes on a side, = 14,400 square pedes, about 126 square meters. opens a new page containing a chart that shows relationships between this unit and other units in its system


Iugerum, quod quadratos duos actus habeat. Actus quadratus, qui et latus est pedes CXX et longus totidem: is modus acnua latine appellatur. 

The jugerum is two actus quadratus. The actus quadratus, which is an area 120 pedes in each direction, is called an acnua in Latin.

Marcus Terentius Varro.
On Agriculture. Book 1, section 10.


Actus quadratus undique finitur pedibus CXX.

The actus quadratus is 120 pedes on all sides.

Lucius Junius Moderatus Columella.
On Agriculture. Book 5, 1, 5. 


Sorry. No information on contributors is available for this page.

home | units index | search |  contact drawing of envelope |  contributors | 
help | privacy | terms of use