| Ångstrom | Å | Angstrom | Å |
| Año luz | año-luz | Light year | ly |
| Attometro | am | Attometer | am |
| Cable | cable | Cable | cable |
| Cadena | ch | Chain | ch |
| Centímetro | cm | Centimeter | cm |
| Chain (based on US survey foot) | ch (US survey foot) | Chain (based on US survey foot) | ch (US survey foot) |
| Decámetro | dam | Decameter | dam |
| Decímetro | dm | Decimeter | dm |
| Exametro | Em | Exameter | Em |
| Fathom | ftm | Fathom | ftm |
| Fathom (based on US survey foot) | ftm (based on US survey foot) | Fathom (based on US survey foot) | ftm (based on US survey foot) |
| Femtometro | fm | Femtometer | fm |
| Fermi | fermi | Fermi | fermi |
| Furlong | fur | Furlong | fur |
| Gigametro | Gm | Gigameter | Gm |
| Hectómetro | hm | Hectometer | hm |
| Kilómetro | km | Kilometer | km |
| League (based on US survey foot) | lea (based on US survey foot) | League (based on US survey foot) | lea (based on US survey foot) |
| Legua | lea | League | lea |
| Línea | linea | Line | line |
| Link | link | Link | link |
| Link (based on US survey foot) | link (based on US survey foot) | Link (based on US survey foot) | link (based on US survey foot) |
| Megametro | Mm | Megameter | Mm |
| Metro | m | Meter | m |
| Micra | µ | Micron | µ |
| Micrómetro | µm | Micrometer | µm |
| Micropulgada | µplg | Microinch | µin |
| Milésima | mil | Mil | mil |
| Milímetro | mm | Millimeter | mm |
| Milla | mi | Mile (International mile) | mi |
| Milla náutica | nmi | Nautical mile | nmi |
| Nanómetro | nm | Nanometer | nm |
| Parsec | pc | Parsec | pc |
| Petametro | Pm | Petameter | Pm |
| Pica (computadora, 1/6 plg) | pica (computadora) | Pica (computer) (1/6 in) | pica (computer) |
| Pica (impresora) | pica (impresora) | Pica (printer's) | pica (printer's) |
| Picometro | pm | Picometer | pm |
| Pie | pie | International foot | ft |
| Pie (US survey) | pie (US survey) | US Survey foot | ft (US survey) |
| Point (computadora, 1/72 plg) | Point (computadora) | Point (computer) (1/72 in) | Point (computer) |
| Point (impresora) | point (impresora) | Point (printer's) | point (printer's) |
| Pole | pole | Pole | pole |
| Pulgada | plg | Inch | in |
| Rod | rd | Rod | rd |
| Rod (based on US survey foot) | rd (based on US survey foot) | Rod | rd |
| Segundo-luz | segundo-luz | Light-second | Light-second |
| Terametro | Tm | Terameter | Tm |
| Thou | th | Thou | th |
| Unidad astronómica | au | Astronomical unit | au |
| US survey mile (statute mile) | mi (US survey mile) | US survey mile (statute mile) | mi (US survey mile) |
| Yarda | yd | Yard | yd |
| Yoctometro | ym | Yoctometer | ym |
| Yottametro | Ym | Yottameter | Ym |
| Zeptometro | zm | Zeptometer | zm |
| Zettametro | Zm | Zettameter | Zm |