Span. 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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1234567.89none
1 234 567.89space
1,234,567.89comma
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Metric

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.
span to kilometer (km)
span to meter (m)
span to centimeter (cm)
span 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.
span to mile (mi)
span to yard (yd)
span 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.
span to iteru (river measure)
span to knet (rod of cord)
span to nbiw (pole)
span to meh niswt (royal cubit)
span to meh nedjes (short cubit)
span to remen
span to djeser, bu
span to pedj-aa (large span)
span to pedj-sheser (small span)
span to amem (fist)
span to deret (hand)
span to shesep (palm)
span 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.
span to schoinos (σχοινός)
span to parasanges (παρασάγγες, league)
span to dolichos (δόλιχος)
span to milion (μίλιον)
span to hippikon (ἱππικόν)
span to diaulos (δίαυλος)
span to στάδιον, stadion
span to stadium olympic
span to stadium attic
span to stadium ptolemey
span to plethron (πλέθρον)
span to hamma (ἅμμα)
span to dekapous (δεκάπους)
span to akaina (ἄκαινα)
span to kalamos (κάλαμος)
span to orgyia (ὄργυια, fathom)
span to diploun bēma (διπλοῦν βῆμα, double pace)
span to haploun bēma (ἁπλοῦν βῆμα, single pace)
span to pēchys (πῆχυς, elbow)
span to pygōn (πυγών)
span to pygmē (πυγμή, forearm)
span to pous (πούς, foot)
span to spithamē (σπιθαμή, span of all fingers)
span to orthodōron (ὀρθόδωρον, wrist to the tip of meddle finger)
span to lichas (λιχάς)
span to hemipodion (ἡμιπόδιον)
span to dichas (διχάς, midfoot)
span to dōron (δῶρον)
span to palaiste (παλαιστή, palm)
span to kondylos (κόνδυλος, two fingers)
span 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.
span to schœnus (rush rope)
span to leuga (league)
span to mille passus (mile)
span to stadium (stade, furlong)
span to actus
span to decempeda
span to pertica (perch)
span to passus (pace)
span to pes sestertius
span to gradus (step)
span to cubitus (cubit)
span to palmipes
span to pes (foot)
span to palmus major (palm length)
span to palmus (palm width)
span to uncia (inch)
span to pollex (thumb)
span 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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Biblical

span to cubit
span to handbreadth
span to etzbah
Units: cubit  /  / 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.
span to legua de por grado (league of the degree)
span to legua marina (nautical)
span to legua
span to milla marina (nautical)
span to milla
span to cuerda of Valencia
span to cuerda
span to estadal
span to braza
span to paso
span to vara
span to codo de ribera
span to codo
span to pie
span to palmo
span to coto
span to pulgada
span to linea
span 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.
span to braça
span to toesa
span to passo geométrico
span to vara
span to côvado
span to pé
span to palmo de craveira
span to polegada
span to linha
span 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
span to lieue commune
span to lieue marine
span to lieue de post
span to lieue metrique
span to arpent
span to perche
span to toise
span to pied [foot]
span to pouce [inch]
span 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

span to mile
span to verst
span to mezhevaya verst
span to kosaya sazhen
span to sazhen
span to makhovaya sazhen
span to arshin
span to ell
span to foot
span to pyad
span to vershok
span to inch
span 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.
span to meile
span to ruthe
span to elle
span to fuss
span to zoll
span 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.
span to meile
span to ruthe
span to klafner
span to fuss
span to zoll
span to linie
span 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.
span to nymil (new mile, used since 1889 till now)
span to mil (mile)
span to fjärdingsväg
span to rev before 1855
span to rev after 1855
span to stång
span to famn (fanthom)
span to aln (forealrm)
span to fot (foot)
span to kvarter
span to tvärhand (hand)
span to tum (thumb or inch) before 1855
span to tum (thumb or inch) after 1855
span to linje (line) before 1855
span 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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