gigaparsec
Lengthexact by definition
A gigaparsec is one billion parsecs, about 3.086 × 10²⁵ metres or 3.26 billion light-years. It is the scale of observational cosmology: the observable universe has a comoving radius near 14 Gpc, and the largest surveyed structures span a few hundred megaparsecs.
Watch out: At these distances "distance" stops being one quantity. Comoving distance, luminosity distance, angular diameter distance and light-travel distance all differ substantially in an expanding universe, and a figure in Gpc means nothing until it says which one it is.
| 1 | 3.0856776e+25 |
One gigaparsec in every length unit
| 1.90915e+60 | Planck length (lP) | |
| 3.08568e+40 | femtometer (fm) | |
| 3.08568e+37 | picometer (pm) | |
| 5.83109e+35 | bohr radius (a0) | |
| 3.08568e+35 | angstrom (Å) | |
| 3.08568e+34 | nanometer (nm) | |
| 3.08568e+31 | micrometer (μm) | |
| 1.21483e+30 | thou (thou) | |
| 8.74680e+28 | point (pt) | |
| 3.08568e+28 | millimeter (mm) | |
| 7.28900e+27 | pica (pc) | |
| 3.08568e+27 | centimeter (cm) | |
| 1.21483e+27 | inch (in) | |
| 3.08568e+26 | decimeter (dm) | |
| 3.03708e+26 | hand (hh) | |
| 1.53388e+26 | link (li) | |
| 1.01236e+26 | foot (ft) | |
| 1.01236e+26 | US survey foot (ftUS) | |
| 3.37454e+25 | yard (yd) | |
| 3.08568e+25 | meter (m) | |
| 1.68727e+25 | fathom (ftm) | |
| 6.13552e+24 | rod (rd) | |
| 1.53388e+24 | chain (ch) | |
| 1.66613e+23 | cable length (cb) | |
| 1.53388e+23 | furlong (fur) | |
| 3.08568e+22 | kilometer (km) | |
| 1.91735e+22 | mile (mi) | |
| 1.66613e+22 | nautical mile (nmi) | |
| 6.39117e+21 | league (lea) | |
| 3.08568e+19 | megameter (Mm) | |
| 4.84332e+18 | Earth radius (REarth) | |
| 1.02927e+17 | light-second (ls) | |
| 8.02728e+16 | lunar distance (LD) | |
| 4.43536e+16 | solar radius (Rsun) | |
| 1.71545e+15 | light-minute (lmin) | |
| 206,265,000,000,000 | astronomical unit (AU) | |
| 3,261,560,000 | light-year (ly) | |
| 1,000,000,000 | parsec (pc) | |
| 1,000,000 | kiloparsec (kpc) | |
| 1,000 | megaparsec (Mpc) | |
| 1 | gigaparsec (Gpc)this unit |
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