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Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

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millimeter
Symbol:  mm 
Category:  Length 
SI Equivalent:  1×10-3 m
Dimension
System:  SI 
Convert     mm  
1 mm =
Length
  Symbol Unit Name
1.88973×107  a.u., a0, b  a.u. of length 
1×107  Å  angstrom 
3.43775  arcmin  arcmin 
6.68459×10-15  AU, UA  astronomical unit 
1×1015  am  attometer 
0.11811    barleycorn (UK) 
1.88973×107  a0, b  bohr (first Bohr radius) 
2.73403×10-5    bolt (US cloth) 
0.472441  line (UK)  button (UK) 
1.5748  line (US)  button (US) 
5.39957×10-6    cable length (int.) 
5.39612×10-6    cable length (UK) 
4.55672×10-6    cable length (US) 
3.93701  caliber, cin  caliber (centiinch) 
0.1  cm  centimeter 
3.28084×10-5  ch  chain (engineer's) 
4.97097×10-5  ch  chain (Gunter's) 
3.28084×10-5  ch  chain (Ramsden's) 
4.97097×10-5  ch  chain (surveyor's) 
2.18723×10-3    cubit (UK) 
1×10-4  dam  decameter 
1×10-2  dm  decimeter 
3.54869×1011  re  electron classical radius 
8.74891×10-4    ell 
0.237107    ems (pica) 
1×10-21  Em  exameter 
5.46807×10-4  fath  fathom 
1×1012  fm  femtometer 
1×1012  F, f  fermi 
1.88973×107  a0, b, a.u.  first Bohr radius 
3.28084×10-3  ft  foot 
fr  French 
4.97097×10-6  fur  furlong (UK) 
4.97097×10-6  fur  furlong (US) 
1×10-12  Gm  gigameter 
9.84252×10-3  hd  hand (UK) 
1×10-5  hm  hectometer 
1.05702×10-28    hubble 
3.93701×10-2  in  inch 
1×10-6  km  kilometer 
3.24078×10-23  kpc  kiloparsec 
2.07168×10-7    league (Canadian) 
1.79986×10-7  leag. (int. naut.)  league (int. naut.) 
2.07124×10-7  leag. (stat.)  league (statute, land) 
1.79871×10-7  leag. (UK, naut.)  league (UK, naut.) 
1.79871×10-7  leag. (US, naut.)  league (US, naut.) 
3.8607×10-17    light-day 
9.26567×10-16    light-hour 
5.5594×10-14    light-minute 
3.33564×10-12    light-second 
1.05702×10-19  ly  light-year 
0.472441  line (UK)  line (UK) 
1.5748  line (US)  line (US) 
3.28084×10-3    link (engineer's) 
4.97097×10-3    link (Gunter's) 
3.28084×10-3    link (Ramsden's) 
4.97097×10-3    link (surveyor's) 
1×10-9  Mm  megameter 
1×10-3  m  meter 
3.93701×104  µin  microinch 
1000  µm  micron 
39.3701  mil, thou  mil (thou) 
1.34742×10-7  mile (geogr.)  mile (geographical) 
6.2137×10-7  mi (int.)  mile (international) 
5.39957×10-7  mi (naut., int.)  mile (nautical, international) 
5.38991×10-7  mi (naut., teleg.)  mile (nautical, telegraph) 
5.39612×10-7  mi (naut., UK, US)  mile (nautical, UK, US) 
6.21371×10-7  mi (stat.)  mile (statute, land) 
6.2137×10-7  mi (survey, US)  mile (survey, US) 
1×106  mµ, nm  millimicron 
4.37445×10-3    nail (UK) 
1×106  nm  nanometer 
5.39957×10-7  mi (int. naut.)  nautical mile (international) 
5.39612×10-7  mi (UK, US, naut.)  nautical mile (UK, US) 
1.31234×10-3    pace (UK) 
1.31234×10-2    palm (UK) 
3.24078×10-20  pc  parsec 
1.98839×10-4  rd  perch (rod, pole) 
1×10-18  Pm  petameter 
0.237106    pica 
1×109  pm  picometer 
2.84528    point (US printer's) 
1.98839×10-4  rd  pole (rod, perch) 
1×10-10    quadrant 
1.98839×10-4  rd  rod (perch, pole) 
1.64042×10-4    rope (UK) 
4.37445×10-3    span 
1×10-15  Tm  terameter 
39.3701  thou, mil  thou (mil) 
9.99792×109  UX, X  X-unit 
1.09361×10-3  yd  yard 
1×1021  ym  yoctometer 
1×10-27  Ym  yottameter 
1×1018  zm  zeptometer 
1×10-24  Zm  zettameter 
Glossary
Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.