| Non-Standard Length Units Conversions |
| 1 cable = 720 ft = 219.456 m |
| 1 cable (U.K.) = 608 ft = 185.318 m |
| 1 chain (engineers') = 100 ft = 30.48 m |
| 1 chain (surveyors') = 66 ft = 20.117 m |
| 1 fathom = 6 ft = 1.829 m |
| 1 fermi = 10-15 m |
| 1 furlong = 660 ft = 201.168 m |
| 1 hand = 4 in = 0.101 6 m |
| 1 league (nautical) = 3 nmi = 5 556 m |
| 1 league (statute) = 3 stat mi |
| 1 light year = 9.460 895 2 * 1015 m |
| 1 link (engineers') = 1 ft = 0.304 8 m |
| 1 link (surveyors') = 7.92 in = 0.201168 m |
| 1 myriameter = 10 000 m |
| 1 nautical mile (nmi) = 1 853.184 m |
| 1 pale = 1 perch (linear) = 1 rod = 5.029 2 m |
| 1 pica = 1/6 in (approx.) = 4.217 518 * 10-3 m |
| 1 point = 1/72 in (approx.) = 3.514 598 * 10-4 m |
| 1 span = 9 in = 0.228 6 m |
| 1 astronomical unit (au) = 92 957 130.3 mi = 1.496 * 108 km |
| 1 parsec = 1.917 378 44 * 1013 mi = 3.085 721 50 *1013 km |