mm - Millimeter. 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.
Conversion is easy:
Need help?

This converter is very easy. Really.

1This is a conversion chart for millimeter (Metric). To switch the unit simply find the one you want on the page and click it.
You can also go to the universal conversion page.
2Enter the value you want to convert (millimeter). Then click the Convert Me button.
Your value gets instantly converted to all other units on the page.
3Now find the unit you want and get the conversion result next to it. It's your answer.

Still have questions? Ask them on our facebook page

  1. Enter the value of your unit .
  2. Touch "Convert Me" button.
  3. Get instant resuls.
? Conversion settings:

Conversion settings explained

First of all, you don't have to change any settings to use the converter. It's absolutely optional.

Number of significat figures

Do you want rounded off figures or scientifically precise ones? For everyday conversions we recommend choosing 3 or 4 significant digits. If you want maximum precision, set the number to 9

Digit groups separator

Choose how you want to have your digit groups separated in long numbers:

1 234 567.89space

Still have questions? Ask them on our facebook page

  • Significant figures:
  • Digit groups separator:
Your value (millimeter, mm):
» show »
» hide »


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.
millimeter to kilometer (km)
millimeter to meter (m)
millimeter to centimeter (cm)
Units: kilometer (km)  / meter (m)  / centimeter (cm)  /
» show »
» hide »

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.
millimeter to mile (mi)
millimeter to yard (yd)
millimeter to inch (in)
Units: mile (mi)  / yard (yd)  / foot (ft)  / inch (in)
» show »
» hide »

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.
millimeter to iteru (river measure)
millimeter to knet (rod of cord)
millimeter to nbiw (pole)
millimeter to meh niswt (royal cubit)
millimeter to meh nedjes (short cubit)
millimeter to remen
millimeter to djeser, bu
millimeter to pedj-aa (large span)
millimeter to pedj-sheser (small span)
millimeter to amem (fist)
millimeter to deret (hand)
millimeter to shesep (palm)
millimeter 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)
» show »
» hide »

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.
millimeter to schoinos (σχοινός)
millimeter to parasanges (παρασάγγες, league)
millimeter to dolichos (δόλιχος)
millimeter to milion (μίλιον)
millimeter to hippikon (ἱππικόν)
millimeter to diaulos (δίαυλος)
millimeter to στάδιον, stadion
millimeter to stadium olympic
millimeter to stadium attic
millimeter to stadium ptolemey
millimeter to plethron (πλέθρον)
millimeter to hamma (ἅμμα)
millimeter to dekapous (δεκάπους)
millimeter to akaina (ἄκαινα)
millimeter to kalamos (κάλαμος)
millimeter to orgyia (ὄργυια, fathom)
millimeter to diploun bēma (διπλοῦν βῆμα, double pace)
millimeter to haploun bēma (ἁπλοῦν βῆμα, single pace)
millimeter to pēchys (πῆχυς, elbow)
millimeter to pygōn (πυγών)
millimeter to pygmē (πυγμή, forearm)
millimeter to pous (πούς, foot)
millimeter to spithamē (σπιθαμή, span of all fingers)
millimeter to orthodōron (ὀρθόδωρον, wrist to the tip of meddle finger)
millimeter to lichas (λιχάς)
millimeter to hemipodion (ἡμιπόδιον)
millimeter to dichas (διχάς, midfoot)
millimeter to dōron (δῶρον)
millimeter to palaiste (παλαιστή, palm)
millimeter to kondylos (κόνδυλος, two fingers)
millimeter 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)
» show »
» hide »

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.
millimeter to schœnus (rush rope)
millimeter to leuga (league)
millimeter to mille passus (mile)
millimeter to stadium (stade, furlong)
millimeter to actus
millimeter to decempeda
millimeter to pertica (perch)
millimeter to passus (pace)
millimeter to pes sestertius
millimeter to gradus (step)
millimeter to cubitus (cubit)
millimeter to palmipes
millimeter to pes (foot)
millimeter to palmus major (palm length)
millimeter to palmus (palm width)
millimeter to uncia (inch)
millimeter to pollex (thumb)
millimeter 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)
» show »
» hide »


millimeter to cubit
millimeter to span
millimeter to handbreadth
millimeter to etzbah
Units: cubit  / span  / handbreadth  / etzbah
» show »
» hide »

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.
millimeter to legua de por grado (league of the degree)
millimeter to legua marina (nautical)
millimeter to legua
millimeter to milla marina (nautical)
millimeter to milla
millimeter to cuerda of Valencia
millimeter to cuerda
millimeter to estadal
millimeter to braza
millimeter to paso
millimeter to vara
millimeter to codo de ribera
millimeter to codo
millimeter to pie
millimeter to palmo
millimeter to coto
millimeter to pulgada
millimeter to linea
millimeter 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
» show »
» hide »

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.
millimeter to braça
millimeter to toesa
millimeter to passo geométrico
millimeter to vara
millimeter to côvado
millimeter to pé
millimeter to palmo de craveira
millimeter to polegada
millimeter to linha
millimeter to ponto
Units: braça  / toesa  / passo geométrico  / vara  / côvado  /  / palmo de craveira  / polegada  / linha  / ponto
» show »
» hide »

Old French

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

Old Russian

millimeter to mile
millimeter to verst
millimeter to mezhevaya verst
millimeter to kosaya sazhen
millimeter to sazhen
millimeter to makhovaya sazhen
millimeter to arshin
millimeter to ell
millimeter to foot
millimeter to pyad
millimeter to vershok
millimeter to inch
millimeter to line
Units: mile  / verst  / mezhevaya verst  / kosaya sazhen  / sazhen  / makhovaya sazhen  / arshin  / ell  / foot  / pyad  / vershok  / inch  / line
» show »
» hide »

Old German (Prussian)

These units were used before adoption of metric system in 1872.
millimeter to meile
millimeter to ruthe
millimeter to elle
millimeter to fuss
millimeter to zoll
millimeter to linie
Units: meile  / ruthe  / elle  / fuss  / zoll  / linie
» show »
» hide »

Old Austrian

These units were used before adoption of metric system in 1871.
millimeter to meile
millimeter to ruthe
millimeter to klafner
millimeter to fuss
millimeter to zoll
millimeter to linie
millimeter to punkt
Units: meile  / ruthe  / klafner  / fuss  / zoll  / linie  / punkt
» show »
» hide »

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.
millimeter to nymil (new mile, used since 1889 till now)
millimeter to mil (mile)
millimeter to fjärdingsväg
millimeter to rev before 1855
millimeter to rev after 1855
millimeter to stång
millimeter to famn (fanthom)
millimeter to aln (forealrm)
millimeter to fot (foot)
millimeter to kvarter
millimeter to tvärhand (hand)
millimeter to tum (thumb or inch) before 1855
millimeter to tum (thumb or inch) after 1855
millimeter to linje (line) before 1855
millimeter 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

Could not find your unit?

Try to search:

Hope you have made all your conversions and enjoyed Convert-me.Com. Come visit us again soon!


This page is also available in English. Click here to view it in English.
Tenemos esta página en español. Para verla en español haz clic aquí.
Essa página também está disponível em português. Clique aqui para acessá-la em português.
Il y a cette page en français. Cliquez pour vous rabattre en français.
Эта страница есть на русском языке. Кликните, чтобы переключиться на русский
! The conversion is approximate.
Either the unit does not have an exact value,
or the exact value is unknown.
? Is it a number? Sorry, can't parse it. (?) Sorry, we don't know this substance. Please pick one from the list. *** Please choose the substance.
It affects conversion results.
Hint: Can't figure out where to look for your unit? Try searching for the unit name. The search box is in the top of the page.
Found an error? Want to suggest more conversions? Contact us on Facebook.
Like and want to help? We appreciate it! Go ahead and let your friends know about us. Use the buttons on the top to share.
Does really exist since 1996? In fact it's even older. We launched the first version of our online units converter in 1995. There was no JavaScript there and all conversions had to be done on server. The service was slow. A year later the technology allowed us to create an instant units conversion service that became the prototype of what you see now.
To conserve space on the page some units block may display collapsed. Tap any unit block header to expand/collapse it.
Does the page look too crowded with so many units? You can hide the blocks you don't need by clicking on the block headline. Try it. Clicking again will expand the block.
Our goal is to make units conversion as easy as possible. Got ideas how to make it better? Let us know

Please hold on while loading conversion factors...

Please hold on while loading conversion factors...