Paraguayan units of measurement
A number of units of measurement were used in Paraguay to measure quantities including length, mass, area, capacity, etc. Metric system had been optional since 1890, and adopted since 1899 in Paraguay.{{Cite book|title = International Critical Tables of Numerical Data, Physics, Chemistry and Technology|last = Washburn|first = E.W.|publisher = McGraw-Hil Book Company, Inc|year = 1926|location = New York|volume = 1|pages = 10 | url=https://books.google.com/books?id=zkErAAAAYAAJ&q=international+critical+tables+1926&pg=PA10 | access-date=8 February 2015}}{{Cite book|title = Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins.|url = https://archive.org/details/encyclopediascie00card|url-access = limited|last = Cardarelli |first = F.|publisher = Springer|year = 2003|isbn = 978-1-4471-1122-1|location = London|pages = [https://archive.org/details/encyclopediascie00card/page/n856 160], 161}}
System before metric system
Spanish system was used before metric system.
=Length=
A number of units were used to measure length. According to legal equivalents, one vara (old) was 0.83856 m. One cuerda or One cordel was {{frac|83|1|3}} vara or 69.88 m, according to legal equivalents. One vara was 0.866 m, according to legal equivalents. Some other units and their legal equivalents are given below:
1 pulgada (inch) = {{frac|1|36}} vara
1 linea (line) = {{frac|1|432}} vara
1 piede (foot) = {{frac|1|3}} vara
1 pouce = {{frac|1|36}} vara
1 ligne = {{frac|1|432}} vara
1 cuadra = 100 vara
1 lieue (league) = 5000 vara.
Mass
Several units were used to measure mass. According to legal equivalents, One libra was 0.459 kg (One libra (old) was 460.08 kg). Some other units and their legal equivalents were given below:
1 onza (once) = {{frac|1|16}} libra
1 arroba = 25 libra
1 quintal (hundredweight) = 100 libra
1 tonelada (tonne) = 2000 libra.
Area
Capacity
Two main systems, dry and liquid, were used to measure capacity.
=Dry=
=Liquid=
Several units were used to measure liquid capacity. One frasco was 3.029 litres. Some other units and their legal equivalents are given below:
1 cuarto = {{frac|1|4}} frasco
1 baril = 32 frasco
1 pipe = 192 frasco.