Actus. Conversion Chart

This conversion page features historical units (ancient, medieval, etc.) that are mostly no longer in use. If you are looking for units of length that are used today, including many national units of various countries, please switch to our main length conversion page.
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We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of metric units is available on the main length conversion page.
actus to kilometer (km)
actus to meter (m)
actus to centimeter (cm)
actus to millimeter (mm)
Units: kilometer (km)  / meter (m)  / centimeter (cm)  / millimeter (mm)
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The American System of Measures (US Customary Units)

We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of U.S. units is available on the main length conversion page.
actus to mile (mi)
actus to yard (yd)
actus to inch (in)
Units: mile (mi)  / yard (yd)  / foot (ft)  / inch (in)
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Ancient Egypt

It might be hard to imagine, but these units dates back to 3100 BC. Egyptian people used them 5000 years ago. These units are distant ancestors of US customary units used today.
actus to iteru (river measure)
actus to knet (rod of cord)
actus to nbiw (pole)
actus to meh niswt (royal cubit)
actus to meh nedjes (short cubit)
actus to remen
actus to djeser, bu
actus to pedj-aa (large span)
actus to pedj-sheser (small span)
actus to amem (fist)
actus to deret (hand)
actus to shesep (palm)
actus to djeba (finger)
Units: iteru (river measure)  / knet (rod of cord)  / nbiw (pole)  / meh niswt (royal cubit)  / meh nedjes (short cubit)  / remen  / djeser, bu  / pedj-aa (large span)  / pedj-sheser (small span)  / amem (fist)  / deret (hand)  / shesep (palm)  / djeba (finger)
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Ancient Greek

The values of Greek units varied according to location and epoch. Relative proportions though were generally the same. Greek measures were in general derived from measurement system of Ancient Egypt.
actus to schoinos (σχοινός)
actus to parasanges (παρασάγγες, league)
actus to dolichos (δόλιχος)
actus to milion (μίλιον)
actus to hippikon (ἱππικόν)
actus to diaulos (δίαυλος)
actus to στάδιον, stadion
actus to stadium olympic
actus to stadium attic
actus to stadium ptolemey
actus to plethron (πλέθρον)
actus to hamma (ἅμμα)
actus to dekapous (δεκάπους)
actus to akaina (ἄκαινα)
actus to kalamos (κάλαμος)
actus to orgyia (ὄργυια, fathom)
actus to diploun bēma (διπλοῦν βῆμα, double pace)
actus to haploun bēma (ἁπλοῦν βῆμα, single pace)
actus to pēchys (πῆχυς, elbow)
actus to pygōn (πυγών)
actus to pygmē (πυγμή, forearm)
actus to pous (πούς, foot)
actus to spithamē (σπιθαμή, span of all fingers)
actus to orthodōron (ὀρθόδωρον, wrist to the tip of meddle finger)
actus to lichas (λιχάς)
actus to hemipodion (ἡμιπόδιον)
actus to dichas (διχάς, midfoot)
actus to dōron (δῶρον)
actus to palaiste (παλαιστή, palm)
actus to kondylos (κόνδυλος, two fingers)
actus to daktylos (δάκτυλος, finger)
Units: schoinos (σχοινός)  / parasanges (παρασάγγες, league)  / dolichos (δόλιχος)  / milion (μίλιον)  / hippikon (ἱππικόν)  / diaulos (δίαυλος)  / στάδιον, stadion  / stadium olympic  / stadium attic  / stadium ptolemey  / plethron (πλέθρον)  / hamma (ἅμμα)  / dekapous (δεκάπους)  / akaina (ἄκαινα)  / kalamos (κάλαμος)  / orgyia (ὄργυια, fathom)  / diploun bēma (διπλοῦν βῆμα, double pace)  / haploun bēma (ἁπλοῦν βῆμα, single pace)  / pēchys (πῆχυς, elbow)  / pygōn (πυγών)  / pygmē (πυγμή, forearm)  / pous (πούς, foot)  / spithamē (σπιθαμή, span of all fingers)  / orthodōron (ὀρθόδωρον, wrist to the tip of meddle finger)  / lichas (λιχάς)  / hemipodion (ἡμιπόδιον)  / dichas (διχάς, midfoot)  / dōron (δῶρον)  / palaiste (παλαιστή, palm)  / kondylos (κόνδυλος, two fingers)  / daktylos (δάκτυλος, finger)
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Ancient Roman

Roman length units were very well defined. The value of the base unit pes (foot) was discovered by John Greaves in 1639 after he made a lot of measurements in the ruins of Rome. Since then we know that the value of one pes was between 0.967 and 0.986 English feet. An accepted modern value is 296 mm. For most Roman units below we give an English equivalent in parentheses.
actus to schœnus (rush rope)
actus to leuga (league)
actus to mille passus (mile)
actus to stadium (stade, furlong)
actus to decempeda
actus to pertica (perch)
actus to passus (pace)
actus to pes sestertius
actus to gradus (step)
actus to cubitus (cubit)
actus to palmipes
actus to pes (foot)
actus to palmus major (palm length)
actus to palmus (palm width)
actus to uncia (inch)
actus to pollex (thumb)
actus to digitus (finger)
Units: schœnus (rush rope)  / leuga (league)  / mille passus (mile)  / stadium (stade, furlong)  /  / decempeda  / pertica (perch)  / passus (pace)  / pes sestertius  / gradus (step)  / cubitus (cubit)  / palmipes  / pes (foot)  / palmus major (palm length)  / palmus (palm width)  / uncia (inch)  / pollex (thumb)  / digitus (finger)
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actus to cubit
actus to span
actus to handbreadth
actus to etzbah
Units: cubit  / span  / handbreadth  / etzbah
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Old Spanish

In various provinces of Spain diferent variations of units were used. The conversions below use Castilian system. Although most of these units are now obsolete, some can still be used today in the countries of Latin America.
actus to legua de por grado (league of the degree)
actus to legua marina (nautical)
actus to legua
actus to milla marina (nautical)
actus to milla
actus to cuerda of Valencia
actus to cuerda
actus to estadal
actus to braza
actus to paso
actus to vara
actus to codo de ribera
actus to codo
actus to pie
actus to palmo
actus to coto
actus to pulgada
actus to linea
actus to punto
Units: legua de por grado (league of the degree)  / legua marina (nautical)  / legua  / milla marina (nautical)  / milla  / cuerda of Valencia  / cuerda  / estadal  / braza  / paso  / vara  / codo de ribera  / codo  / pie  / palmo  / coto  / pulgada  / linea  / punto
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Old Portuguese

These units were used in Portugal, Brazil and other countries of the Portuguese Empire until the adoption of the metric system in 19th century.
actus to braça
actus to toesa
actus to passo geométrico
actus to vara
actus to côvado
actus to pé
actus to palmo de craveira
actus to polegada
actus to linha
actus to ponto
Units: braça  / toesa  / passo geométrico  / vara  / côvado  /  / palmo de craveira  / polegada  / linha  / ponto
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Old French

There were many local variations; the following are Quebec and Paris definitions
actus to lieue commune
actus to lieue marine
actus to lieue de post
actus to lieue metrique
actus to arpent
actus to perche
actus to toise
actus to pied [foot]
actus to pouce [inch]
actus to ligne
Units: lieue commune  / lieue marine  / lieue de post  / lieue metrique  / arpent  / perche  / toise  / pied [foot]  / pouce [inch]  / ligne
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Old Russian

actus to mile
actus to verst
actus to mezhevaya verst
actus to kosaya sazhen
actus to sazhen
actus to makhovaya sazhen
actus to arshin
actus to ell
actus to foot
actus to pyad
actus to vershok
actus to inch
actus to line
Units: mile  / verst  / mezhevaya verst  / kosaya sazhen  / sazhen  / makhovaya sazhen  / arshin  / ell  / foot  / pyad  / vershok  / inch  / line
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Old German (Prussian)

These units were used before adoption of metric system in 1872.
actus to meile
actus to ruthe
actus to elle
actus to fuss
actus to zoll
actus to linie
Units: meile  / ruthe  / elle  / fuss  / zoll  / linie
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Old Austrian

These units were used before adoption of metric system in 1871.
actus to meile
actus to ruthe
actus to klafner
actus to fuss
actus to zoll
actus to linie
actus to punkt
Units: meile  / ruthe  / klafner  / fuss  / zoll  / linie  / punkt
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Old Swedish

Common measurement system was introduced in Sweden by law in 1665. Since then the system was slightly altered twice: in 1735 and 1855. Sweden switched to metric system in 1889.
actus to nymil (new mile, used since 1889 till now)
actus to mil (mile)
actus to fjärdingsväg
actus to rev before 1855
actus to rev after 1855
actus to stång
actus to famn (fanthom)
actus to aln (forealrm)
actus to fot (foot)
actus to kvarter
actus to tvärhand (hand)
actus to tum (thumb or inch) before 1855
actus to tum (thumb or inch) after 1855
actus to linje (line) before 1855
actus to linje (line) after 1855
Units: nymil (new mile, used since 1889 till now)  / mil (mile)  / fjärdingsväg  / rev before 1855  / rev after 1855  / stång  / famn (fanthom)  / aln (forealrm)  / fot (foot)  / kvarter  / tvärhand (hand)  / tum (thumb or inch) before 1855  / tum (thumb or inch) after 1855  / linje (line) before 1855  / linje (line) after 1855

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