1 kilometer [km] = 1000 meter [m]

1 decimeter [dm] = 0.1 meter [m]

1 centimeter [cm] = 0.01 meter [m]

1 millimeter [mm] = 0.001 meter [m]

1 micrometer [µm] = 0.000001 meter [m]

1 nanometer [nm] = 1e-9 meter [m]

1 mile [mi] = 1609.344 meter [m]

1 yard [yd] = 0.9144 meter [m]

1 foot [ft] = 0.3048 meter [m]

1 inch [in] = 0.0254 meter [m]

1 light year [ly] = 9460730472580000 meter [m]

1 exameter [Em] = 1000000000000000000 meter [m]

1 petameter [Pm] = 1000000000000000 meter [m]

1 terameter [Tm] = 1000000000000 meter [m]

1 gigameter [Gm] = 1000000000 meter [m]

1 megameter [Mm] = 1000000 meter [m]

1 hectometer [hm] = 100 meter [m]

1 dekameter [dam] = 10 meter [m]

1 micron [µ] = 0.000001 meter [m]

1 picometer [pm] = 1e-12 meter [m]

1 femtometer [fm] = 1e-15 meter [m]

1 attometer [am] = 1e-18 meter [m]

1 megaparsec [Mpc] = 3.08567758128e+22 meter [m]

1 kiloparsec [kpc] = 30856775812800000000 meter [m]

1 parsec [pc] = 30856775812800000 meter [m]

1 astronomical unit [AU] = 149597870691 meter [m]

1 league [lea] = 4828.032 meter [m]

1 nautical league (uk) [lea (UK)] = 5559.552 meter [m]

1 nautical league (int.) [lea (int.)] = 5556 meter [m]

1 league (statute) [st.league] = 4828.0416560833 meter [m]

1 nautical mile (uk) [NM (UK)] = 1853.184 meter [m]

1 nautical mile (international) [NM] = 1852 meter [m]

1 mile (statute) [mi (US)] = 1609.3472186944 meter [m]

1 mile (us survey) [mi] = 1609.3472186944 meter [m]

1 mile (roman) [mi (Roman)] = 1479.804 meter [m]

1 kiloyard [kyd] = 914.4 meter [m]

1 furlong [fur] = 201.168 meter [m]

1 furlong (us survey) [fur] = 201.1684023368 meter [m]

1 chain [ch] = 20.1168 meter [m]

1 chain (us survey) [ch] = 20.1168402337 meter [m]

1 rope [rope] = 6.096 meter [m]

1 rod [rd] = 5.0292 meter [m]

1 rod (us survey) [rd] = 5.0292100584 meter [m]

1 perch [perch] = 5.0292 meter [m]

1 pole [pole] = 5.0292 meter [m]

1 fathom [fath] = 1.8288 meter [m]

1 fathom (us survey) [fath] = 1.8288036576 meter [m]

1 ell [ell] = 1.143 meter [m]

1 foot (us survey) [ft] = 0.3048006096 meter [m]

1 link [li] = 0.201168 meter [m]

1 link (us survey) [li] = 0.2011684023 meter [m]

1 cubit (uk) [cubit] = 0.4572 meter [m]

1 hand [hand] = 0.1016 meter [m]

1 span (cloth) [span] = 0.2286 meter [m]

1 finger (cloth) [finger] = 0.1143 meter [m]

1 nail (cloth) [nail] = 0.05715 meter [m]

1 inch (us survey) [in] = 0.0254000508 meter [m]

1 barleycorn [barleycorn] = 0.0084666667 meter [m]

1 mil [mil] = 0.0000254 meter [m]

1 microinch [µin] = 2.54e-8 meter [m]

1 angstrom [Å] = 1e-10 meter [m]

1 a.u. of length [a.u.] = 5.2917724900001e-11 meter [m]

1 x-unit [X] = 1.00208e-13 meter [m]

1 fermi [F] = 1e-15 meter [m]

1 arpent [arpent] = 58.5216 meter [m]

1 pica [pica] = 0.0042333333 meter [m]

1 point [pt] = 0.0003527778 meter [m]

1 twip [twip] = 0.0000176389 meter [m]

1 aln [aln] = 0.5937777778 meter [m]

1 famn [famn] = 1.7813333333 meter [m]

1 caliber [cl] = 0.000254 meter [m]

1 centiinch [cin] = 0.000254 meter [m]

1 ken [ken] = 2.11836 meter [m]

1 russian archin [archin] = 0.7112 meter [m]

1 roman actus [actus] = 35.47872 meter [m]

1 vara de tarea [vara] = 2.505456 meter [m]

1 vara conuquera [vara] = 2.505456 meter [m]

1 vara castellana [vara] = 0.835152 meter [m]

1 cubit (greek) [cubit] = 0.462788 meter [m]

1 long reed [reed] = 3.2004 meter [m]

1 reed [reed] = 2.7432 meter [m]

1 long cubit [cubit] = 0.5334 meter [m]

1 handbreadth [hb] = 0.0762 meter [m]

1 fingerbreadth [fb] = 0.01905 meter [m]

1 planck length [lP] = 1.61605e-35 meter [m]

1 electron radius (classical) [re] = 2.81794092e-15 meter [m]

1 bohr radius [b] = 5.2917724900001e-11 meter [m]

1 earth's equatorial radius [R⊕] = 6378160 meter [m]

1 earth's polar radius [R⊕] = 6356776.9999999 meter [m]

1 earth's distance from sun [AU] = 149600000000 meter [m]

1 sun's radius [R☉] = 696000000 meter [m]