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Injection Molding Design Guide

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

Metal 3D Printing Design Guide

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

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Mechanical Engineers Outlook

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

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millimeter
Symbol:  mm 
Category:  Length 
SI Equivalent:  1×10-3 m
Dimension
System:  SI 
Convert     mm  
95 conversions, showing those commonly used | Show all
5.21 mm =
Length
  Symbol Unit Name
5.21×107  Å  angstrom 
3.48267×10-14  AU, UA  astronomical unit 
5.21×1015  am  attometer 
0.521  cm  centimeter 
1.70932×10-2  ft  foot 
5.21×10-5  hm  hectometer 
0.205118  in  inch 
5.21×10-6  km  kilometer 
5.50709×10-19  ly  light-year 
5.21×10-3  m  meter 
2.05118×105  µin  microinch 
5210  µm  micron 
205.118  mil, thou  mil (thou) 
3.23734×10-6  mi (stat.)  mile (statute, land) 
5.21×106  nm  nanometer 
2.81318×10-6  mi (int. naut.)  nautical mile (international) 
1.68845×10-19  pc  parsec 
5.21×109  pm  picometer 
5.69773×10-3  yd  yard 
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Glossary
Injection Molding Design Guide

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

Metal 3D Printing Design Guide

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

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Mechanical Engineers Outlook

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