Roman Weights & Measures

 


TABLE OF CONTENTS


Distance

What it was

Other Roman Measurement Equivalent

English/Metric Equivalent

Mille passus or milia passuumupdated020202

Roman Mile

1000 passus

1618.5 yds or 1480 m

Actus (pl. actus)

Land surveying measurement equivalent to the distance that oxen pulling a plow would be driven before turning

120 pedes

116' 6" or 35.51 m

Passus ("pace"; pl. passus)

Closest Roman approximation to our yard or meter measurement

5 pedes

4' 10.25" or apx 1.48 m

Pes (pl. pedes)updated020202

Roman Foot

12 unciae

Apx 11.65" or 29.6 cm during the Late Roman Republic.

Evolved to 11.5" or 29.4 cm during the Empire

Uncia (pl. unciae)

Roman Inch

None

.958" or 2.43 cm

Stadium (pl. stadia)updated020202

Distance measure at sea

125 passus

apx 607' or 185 m

Area

What it was

Other Roman Measurement Equivalent

English/Metric Equivalent

Centuria (pl. centuriae)

Roman land area measure corresponding to the normal area taken up by a Century of Roman Legionaries

100 heredia

124.6 acres or 506,000 sq. meters

Heredium (pl. heredia)

Roman land area measure

2 Jugera

1.246 acres or 5060 sq. meters

Jugerum (pl. jugera)

Roman land area measure; the area a yoke of two oxen could plow in a day

28,800 pedes quadrans (sq. Roman feet)

5/8 of an acre or 2530 sq. meters

Actus quadrans ("square driving") or acnua

Roman land area measure

14,400 pedes quadrans (sq. Roman feet)

.312 acres or .126 hectares

Volume

What it was

Other Roman Measurement Equivalent

English/Metric Equivalent

Amphora (pl. amphorae)

Liquid volume measure; cubic Roman Foot; derived from the term for the earthenware vessels used to store and transport liquids

8 congii

apx 6.8 gals or 25.79 liters

Congius (pl. congii)

Liquid volume measure

12 heminae

apx .85 gals or 3.22 liters

Sextarius (pl. sextarii)

Liquid volume measure

2 heminae

apx 1.14 pint or .546 liters

Hemina (pl. heminae)

Liquid volume measure

apx .57 pints or .273 liters

Modius (pl. modii)

Dry volume measure

apx 1 peck

Liquid volume measure

16 sextarii

2.4 gals or 8.732 liters

Ligula ( pl. ligulae) or cochlear ("spoonful"; pl. cochleara) or cochlea ("snail shell"; pl. cochleae)

Smallest unit of liquid measure

none

.34 fluid ounce or 1.14 centiliters

Weight

What it was

Other Roman Measurement Equivalent

English/Metric Equivalent

Libra ("balance"; pl. librae) or As

Roman Pound

12 unciae

apx 3/4 pound or 335.9g

Uncia (pl. uncia)

Roman Ounce

none

apx 1 ounce or 28g

Notes:

  • The amphora was the unit used to determine the shipping weight for sea transport

Back to the Top

 

[Back Arrow Icon]Back to Ancient Rome Page

Comments

 

Latest Version! NetObjects Fusion 10 

 

Copyright 1998 Rich Hamper 

All Rights Reserved

 

Last Updated:

Sunday, January 20, 2008