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unit

Length

Definition

The length is the fundamental unit of measurement of distance between two points displaced in the plan, space.

1 metre (meter) is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

 

system of units:   SI;
statute:   the base unit;
symbol measure:   L;
unit name:   metre (meter);
symbol unit:   m;
dimension:   L;
expression in other units:   in, yd, mi, ft;

Online converter

For separation of number integers and decimals, use the symbol – point [.]

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Units of measurement

namesymbol value in SI unit:
m
note
1 ångström Å= 10-10 
1 astronomical unit AU≈ 149 597 870 691 ± 30 m 
1 chain ch≈ 20.116 84(1)
1 fathom ftm≈ 1.828 804(1)
1 fermi F, f, fm= 10-15 
1 foot ft= 0.304
1 foot ft≈ 0.304 800 6(1)
1 inci in= 0.025 4 
1 light year l.y.≈ 9.460 73 × 1015(2)
1 kayser K= 100 
1 micron µ≈ 10-6 
1 mil mil= 2.54 × 10-5 
1 mile mi= 1 609.344 
1 mile mi≈ 1 609.347(1)
1 nautical mile mn= 1 852(8)
1 parsec pc≈ 3.085 678 × 1016(3)
1 pica pica≈ 4 233.333 × 10-3(4)
1 pica pica≈ 4 217.518 × 10-3(5)
1 point point≈ 3.527 778× 10-4 (6)
1 point point≈ 3.514 598 × 10-4 (5)
1 rod rd≈ 5.029 210(1)
1 yard yd≈ 0.914 4 
1 furlong fr≈ 201.168 
1 league lea≈ 4 828.032 
1 x-unit xu≈ 1.002 02 × 10-10(7)

Note:

(1) - based on US survey foot;

(2) - IAU (const. astronom.);

(3) - astronomical unit;

(4) - computer (1/6 in);

(5) - printer;

(6) - computer (1/72 in);

(7) - Roentgen spectroscopy;

(8) - UK, USA.