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femtometer
Symbol:  fm 
Category:  Length 
SI Equivalent:  1×10-15 m
Dimension:  L 
System:  SI 
Convert     fm  
1 fm =
Length
  Symbol Unit Name
1.88973×10-5  a.u., a0, b  a.u. of length 
10×10-6  Å  angstrom 
3.43775×10-12  arcmin  arcmin 
6.68459×10-27  AU, UA  astronomical unit 
1000  am  attometer 
1.1811×10-13    barleycorn (UK) 
1.88973×10-5  a0, b  bohr (first Bohr radius) 
2.73403×10-17    bolt (US cloth) 
4.72441×10-13  line (UK)  button (UK) 
1.5748×10-12  line (US)  button (US) 
5.39957×10-18    cable length (int.) 
5.39612×10-18    cable length (UK) 
4.55672×10-18    cable length (US) 
3.93701×10-12  caliber, cin  caliber (centiinch) 
1×10-13  cm  centimeter 
3.28084×10-17  ch  chain (engineer's) 
4.97097×10-17  ch  chain (Gunter's) 
3.28084×10-17  ch  chain (Ramsden's) 
4.97097×10-17  ch  chain (surveyor's) 
2.18723×10-15    cubit (UK) 
1×10-16  dam  decameter 
10×10-15  dm  decimeter 
0.354869  re  electron classical radius 
8.74891×10-16    ell 
2.37107×10-13    ems (pica) 
1×10-33  Em  exameter 
5.46807×10-16  fath  fathom 
1  F, f  fermi 
1.88973×10-5  a0, b, a.u.  first Bohr radius 
3.28084×10-15  ft  foot 
3×10-12  fr  French 
4.97097×10-18  fur  furlong (UK) 
4.97097×10-18  fur  furlong (US) 
1×10-24  Gm  gigameter 
9.84252×10-15  hd  hand (UK) 
1×10-17  hm  hectometer 
1.05702×10-40    hubble 
3.93701×10-14  in  inch 
1×10-18  km  kilometer 
3.24078×10-35  kpc  kiloparsec 
2.07168×10-19    league (Canadian) 
1.79986×10-19  leag. (int. naut.)  league (int. naut.) 
2.07124×10-19  leag. (stat.)  league (statute, land) 
1.79871×10-19  leag. (UK, naut.)  league (UK, naut.) 
1.79871×10-19  leag. (US, naut.)  league (US, naut.) 
3.8607×10-29    light-day 
9.26567×10-28    light-hour 
5.5594×10-26    light-minute 
3.33564×10-24    light-second 
1.05702×10-31  ly  light-year 
4.72441×10-13  line (UK)  line (UK) 
1.5748×10-12  line (US)  line (US) 
3.28084×10-15    link (engineer's) 
4.97097×10-15    link (Gunter's) 
3.28084×10-15    link (Ramsden's) 
4.97097×10-15    link (surveyor's) 
1×10-21  Mm  megameter 
1×10-15  m  meter 
3.93701×10-8  µin  microinch 
1×10-9  µm  micron 
3.93701×10-11  mil, thou  mil (thou) 
1.34742×10-19  mile (geogr.)  mile (geographical) 
6.2137×10-19  mi (int.)  mile (international) 
5.39957×10-19  mi (naut., int.)  mile (nautical, international) 
5.38991×10-19  mi (naut., teleg.)  mile (nautical, telegraph) 
5.39612×10-19  mi (naut., UK, US)  mile (nautical, UK, US) 
6.21371×10-19  mi (stat.)  mile (statute, land) 
6.2137×10-19  mi (survey, US)  mile (survey, US) 
10×10-13  mm  millimeter 
1×10-6  mµ, nm  millimicron 
4.37445×10-15    nail (UK) 
1×10-6  nm  nanometer 
5.39957×10-19  mi (int. naut.)  nautical mile (international) 
5.39612×10-19  mi (UK, US, naut.)  nautical mile (UK, US) 
1.31234×10-15    pace (UK) 
1.31234×10-14    palm (UK) 
3.24078×10-32  pc  parsec 
1.98839×10-16  rd  perch (rod, pole) 
1×10-30  Pm  petameter 
2.37106×10-13    pica 
1×10-3  pm  picometer 
2.84528×10-12    point (US printer's) 
1.98839×10-16  rd  pole (rod, perch) 
1×10-22    quadrant 
1.98839×10-16  rd  rod (perch, pole) 
1.64042×10-16    rope (UK) 
4.37445×10-15    span 
1×10-27  Tm  terameter 
3.93701×10-11  thou, mil  thou (mil) 
9.99792×10-3  UX, X  X-unit 
1.09361×10-15  yd  yard 
10×108  ym  yoctometer 
10×10-40  Ym  yottameter 
1×106  zm  zeptometer 
10×10-37  Zm  zettameter 
Glossary
FREE Publications
Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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.

more publications