Plethron (πλέθρον). 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.
plethron (πλέθρον) to kilometer (km)
plethron (πλέθρον) to meter (m)
plethron (πλέθρον) to centimeter (cm)
plethron (πλέθρον) 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.
plethron (πλέθρον) to mile (mi)
plethron (πλέθρον) to yard (yd)
plethron (πλέθρον) 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.
plethron (πλέθρον) to iteru (river measure)
plethron (πλέθρον) to knet (rod of cord)
plethron (πλέθρον) to nbiw (pole)
plethron (πλέθρον) to meh niswt (royal cubit)
plethron (πλέθρον) to meh nedjes (short cubit)
plethron (πλέθρον) to remen
plethron (πλέθρον) to djeser, bu
plethron (πλέθρον) to pedj-aa (large span)
plethron (πλέθρον) to pedj-sheser (small span)
plethron (πλέθρον) to amem (fist)
plethron (πλέθρον) to deret (hand)
plethron (πλέθρον) to shesep (palm)
plethron (πλέθρον) 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.
plethron (πλέθρον) to schoinos (σχοινός)
plethron (πλέθρον) to parasanges (παρασάγγες, league)
plethron (πλέθρον) to dolichos (δόλιχος)
plethron (πλέθρον) to milion (μίλιον)
plethron (πλέθρον) to hippikon (ἱππικόν)
plethron (πλέθρον) to diaulos (δίαυλος)
plethron (πλέθρον) to στάδιον, stadion
plethron (πλέθρον) to stadium olympic
plethron (πλέθρον) to stadium attic
plethron (πλέθρον) to stadium ptolemey
plethron (πλέθρον) to hamma (ἅμμα)
plethron (πλέθρον) to dekapous (δεκάπους)
plethron (πλέθρον) to akaina (ἄκαινα)
plethron (πλέθρον) to kalamos (κάλαμος)
plethron (πλέθρον) to orgyia (ὄργυια, fathom)
plethron (πλέθρον) to diploun bēma (διπλοῦν βῆμα, double pace)
plethron (πλέθρον) to haploun bēma (ἁπλοῦν βῆμα, single pace)
plethron (πλέθρον) to pēchys (πῆχυς, elbow)
plethron (πλέθρον) to pygōn (πυγών)
plethron (πλέθρον) to pygmē (πυγμή, forearm)
plethron (πλέθρον) to pous (πούς, foot)
plethron (πλέθρον) to spithamē (σπιθαμή, span of all fingers)
plethron (πλέθρον) to orthodōron (ὀρθόδωρον, wrist to the tip of meddle finger)
plethron (πλέθρον) to lichas (λιχάς)
plethron (πλέθρον) to hemipodion (ἡμιπόδιον)
plethron (πλέθρον) to dichas (διχάς, midfoot)
plethron (πλέθρον) to dōron (δῶρον)
plethron (πλέθρον) to palaiste (παλαιστή, palm)
plethron (πλέθρον) to kondylos (κόνδυλος, two fingers)
plethron (πλέθρον) 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  /  / 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.
plethron (πλέθρον) to schœnus (rush rope)
plethron (πλέθρον) to leuga (league)
plethron (πλέθρον) to mille passus (mile)
plethron (πλέθρον) to stadium (stade, furlong)
plethron (πλέθρον) to actus
plethron (πλέθρον) to decempeda
plethron (πλέθρον) to pertica (perch)
plethron (πλέθρον) to passus (pace)
plethron (πλέθρον) to pes sestertius
plethron (πλέθρον) to gradus (step)
plethron (πλέθρον) to cubitus (cubit)
plethron (πλέθρον) to palmipes
plethron (πλέθρον) to pes (foot)
plethron (πλέθρον) to palmus major (palm length)
plethron (πλέθρον) to palmus (palm width)
plethron (πλέθρον) to uncia (inch)
plethron (πλέθρον) to pollex (thumb)
plethron (πλέθρον) to digitus (finger)
Units: schœnus (rush rope)  / leuga (league)  / mille passus (mile)  / stadium (stade, furlong)  / actus  / 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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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.
plethron (πλέθρον) to legua de por grado (league of the degree)
plethron (πλέθρον) to legua marina (nautical)
plethron (πλέθρον) to legua
plethron (πλέθρον) to milla marina (nautical)
plethron (πλέθρον) to milla
plethron (πλέθρον) to cuerda of Valencia
plethron (πλέθρον) to cuerda
plethron (πλέθρον) to estadal
plethron (πλέθρον) to braza
plethron (πλέθρον) to paso
plethron (πλέθρον) to vara
plethron (πλέθρον) to codo de ribera
plethron (πλέθρον) to codo
plethron (πλέθρον) to pie
plethron (πλέθρον) to palmo
plethron (πλέθρον) to coto
plethron (πλέθρον) to pulgada
plethron (πλέθρον) to linea
plethron (πλέθρον) 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.
plethron (πλέθρον) to braça
plethron (πλέθρον) to toesa
plethron (πλέθρον) to passo geométrico
plethron (πλέθρον) to vara
plethron (πλέθρον) to côvado
plethron (πλέθρον) to pé
plethron (πλέθρον) to palmo de craveira
plethron (πλέθρον) to polegada
plethron (πλέθρον) to linha
plethron (πλέθρον) 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
plethron (πλέθρον) to lieue commune
plethron (πλέθρον) to lieue marine
plethron (πλέθρον) to lieue de post
plethron (πλέθρον) to lieue metrique
plethron (πλέθρον) to arpent
plethron (πλέθρον) to perche
plethron (πλέθρον) to toise
plethron (πλέθρον) to pied [foot]
plethron (πλέθρον) to pouce [inch]
plethron (πλέθρον) 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 German (Prussian)

These units were used before adoption of metric system in 1872.
plethron (πλέθρον) to meile
plethron (πλέθρον) to ruthe
plethron (πλέθρον) to elle
plethron (πλέθρον) to fuss
plethron (πλέθρον) to zoll
plethron (πλέθρον) 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.
plethron (πλέθρον) to meile
plethron (πλέθρον) to ruthe
plethron (πλέθρον) to klafner
plethron (πλέθρον) to fuss
plethron (πλέθρον) to zoll
plethron (πλέθρον) to linie
plethron (πλέθρον) 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.
plethron (πλέθρον) to nymil (new mile, used since 1889 till now)
plethron (πλέθρον) to mil (mile)
plethron (πλέθρον) to fjärdingsväg
plethron (πλέθρον) to rev before 1855
plethron (πλέθρον) to rev after 1855
plethron (πλέθρον) to stång
plethron (πλέθρον) to famn (fanthom)
plethron (πλέθρον) to aln (forealrm)
plethron (πλέθρον) to fot (foot)
plethron (πλέθρον) to kvarter
plethron (πλέθρον) to tvärhand (hand)
plethron (πλέθρον) to tum (thumb or inch) before 1855
plethron (πλέθρον) to tum (thumb or inch) after 1855
plethron (πλέθρον) to linje (line) before 1855
plethron (πλέθρον) 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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