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millimeter
Symbol:  mm 
Category:  Length 
SI Equivalent:  1×10-3 m
Dimension:  L 
System:  SI 
Convert     mm  
2.50 mm =
Length
  Symbol Unit Name
4.72432×107  a.u., a0, b  a.u. of length 
2.5×107  Å  angstrom 
8.59437  arcmin  arcmin 
1.67115×10-14  AU, UA  astronomical unit 
2.5×1015  am  attometer 
0.295276    barleycorn (UK) 
4.72432×107  a0, b  bohr (first Bohr radius) 
6.83508×10-5    bolt (US cloth) 
1.1811  line (UK)  button (UK) 
3.93701  line (US)  button (US) 
1.34989×10-5    cable length (int.) 
1.34903×10-5    cable length (UK) 
1.13918×10-5    cable length (US) 
9.84252  caliber, cin  caliber (centiinch) 
0.25  cm  centimeter 
8.2021×10-5  ch  chain (engineer's) 
1.24274×10-4  ch  chain (Gunter's) 
8.2021×10-5  ch  chain (Ramsden's) 
1.24274×10-4  ch  chain (surveyor's) 
5.46807×10-3    cubit (UK) 
2.5×10-4  dam  decameter 
2.5×10-2  dm  decimeter 
8.87173×1011  re  electron classical radius 
2.18723×10-3    ell 
0.592768    ems (pica) 
2.5×10-21  Em  exameter 
1.36702×10-3  fath  fathom 
2.5×1012  fm  femtometer 
2.5×1012  F, f  fermi 
4.72432×107  a0, b, a.u.  first Bohr radius 
8.2021×10-3  ft  foot 
7.5  fr  French 
1.24274×10-5  fur  furlong (UK) 
1.24274×10-5  fur  furlong (US) 
2.5×10-12  Gm  gigameter 
2.46063×10-2  hd  hand (UK) 
2.5×10-5  hm  hectometer 
2.64256×10-28    hubble 
9.84252×10-2  in  inch 
2.5×10-6  km  kilometer 
8.10195×10-23  kpc  kiloparsec 
5.1792×10-7    league (Canadian) 
4.49964×10-7  leag. (int. naut.)  league (int. naut.) 
5.17809×10-7  leag. (stat.)  league (statute, land) 
4.49677×10-7  leag. (UK, naut.)  league (UK, naut.) 
4.49677×10-7  leag. (US, naut.)  league (US, naut.) 
9.65174×10-17    light-day 
2.31642×10-15    light-hour 
1.38985×10-13    light-minute 
8.3391×10-12    light-second 
2.64256×10-19  ly  light-year 
1.1811  line (UK)  line (UK) 
3.93701  line (US)  line (US) 
8.2021×10-3    link (engineer's) 
1.24274×10-2    link (Gunter's) 
8.2021×10-3    link (Ramsden's) 
1.24274×10-2    link (surveyor's) 
2.5×10-9  Mm  megameter 
2.5×10-3  m  meter 
9.84252×104  µin  microinch 
2500  µm  micron 
98.4252  mil, thou  mil (thou) 
3.36855×10-7  mile (geogr.)  mile (geographical) 
1.55343×10-6  mi (int.)  mile (international) 
1.34989×10-6  mi (naut., int.)  mile (nautical, international) 
1.34748×10-6  mi (naut., teleg.)  mile (nautical, telegraph) 
1.34903×10-6  mi (naut., UK, US)  mile (nautical, UK, US) 
1.55343×10-6  mi (stat.)  mile (statute, land) 
1.55342×10-6  mi (survey, US)  mile (survey, US) 
2.5×106  mµ, nm  millimicron 
1.09361×10-2    nail (UK) 
2.5×106  nm  nanometer 
1.34989×10-6  mi (int. naut.)  nautical mile (international) 
1.34903×10-6  mi (UK, US, naut.)  nautical mile (UK, US) 
3.28084×10-3    pace (UK) 
3.28084×10-2    palm (UK) 
8.10195×10-20  pc  parsec 
4.97097×10-4  rd  perch (rod, pole) 
2.5×10-18  Pm  petameter 
0.592766    pica 
2.5×109  pm  picometer 
7.11319    point (US printer's) 
4.97097×10-4  rd  pole (rod, perch) 
2.5×10-10    quadrant 
4.97097×10-4  rd  rod (perch, pole) 
4.10105×10-4    rope (UK) 
1.09361×10-2    span 
2.5×10-15  Tm  terameter 
98.4252  thou, mil  thou (mil) 
2.49948×1010  UX, X  X-unit 
2.73403×10-3  yd  yard 
2.5×1021  ym  yoctometer 
2.5×10-27  Ym  yottameter 
2.5×1018  zm  zeptometer 
2.5×10-24  Zm  zettameter 
Glossary
FREE Publications
STEM Career Outlook

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

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

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A white paper to assist in the evaluation of 3D scanning hardware solutions.

more publications