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meter
Symbol:  m 
Category:  Length 
SI Equivalent:  1 m
Dimension
System:  SI 
 
Notes
The base unit of length in the SI system . Historically, the meter has been defined in numerous ways. It has been defined as 1/10,000,000 of the quadrant of the Earth's circumference stretching from the North Pole through Paris to the equator; It was also once defined as the distance between two marked lines on an international prototype, a bar of platinum-iridium alloy; still, it has been defined as 1,650,763.73 wavelengths of the orange-red line in the spectrum of the krypton-86 atom in the vacuum. The latest definition was decided by the General Conference on Weights and Measures in 1983 as the distance light travels in the vacuum in 1/299,792,458 second [17th CGPM, Resolution 1].
Convert     m  
95 conversions, showing those commonly used | Show all
1 m =
Length
  Symbol Unit Name
10×109  Å  angstrom 
6.68459×10-12  AU, UA  astronomical unit 
10×1017  am  attometer 
100  cm  centimeter 
3.28084  ft  foot 
1×10-2  hm  hectometer 
39.3701  in  inch 
1×10-3  km  kilometer 
1.05702×10-16  ly  light-year 
3.93701×107  µin  microinch 
1×106  µm  micron 
3.93701×104  mil, thou  mil (thou) 
6.21371×10-4  mi (stat.)  mile (statute, land) 
1000  mm  millimeter 
1×109  nm  nanometer 
5.39957×10-4  mi (int. naut.)  nautical mile (international) 
3.24078×10-17  pc  parsec 
1×1012  pm  picometer 
1.09361  yd  yard 
more...
Glossary