point
Lengthexact by definition
The point is exactly 1/72 of an inch, 0.3527 mm. It is the unit of type size and of every vertical measurement in page layout: leading, rule weight and the space above a paragraph are all set in points, and 12 points make a pica.
Watch out: The 1/72.27 in point is still called the "TeX point" and appears in typesetting literature. The difference is about 0.4%, invisible on a single character and a couple of millimetres over a full page depth.
| 1 | 0.00035277778 |
Desktop publishing settled this. Traditional printer's points ran near 1/72.27 in in the Anglo-American system and differed again in the Didot system used on the continent. PostScript in the 1980s defined the point as exactly 1/72 in so that the arithmetic worked in whole numbers, and that value won.
One point in every length unit
| 2.18269e+31 | Planck length (lP) | |
| 352,778,000,000 | femtometer (fm) | |
| 352,778,000 | picometer (pm) | |
| 6,666,530 | bohr radius (a0) | |
| 3,527,780 | angstrom (Å) | |
| 352,778 | nanometer (nm) | |
| 352.778 | micrometer (μm) | |
| 13.8889 | thou (thou) | |
| 1 | point (pt)this unit | |
| 0.352778 | millimeter (mm) | |
| 0.0833333 | pica (pc) | |
| 0.0352778 | centimeter (cm) | |
| 0.0138889 | inch (in) | |
| 0.00352778 | decimeter (dm) | |
| 0.00347222 | hand (hh) | |
| 0.00175365 | link (li) | |
| 0.00115741 | foot (ft) | |
| 0.00115741 | US survey foot (ftUS) | |
| 0.000385802 | yard (yd) | |
| 0.000352778 | meter (m) | |
| 0.000192901 | fathom (ftm) | |
| 0.0000701459 | rod (rd) | |
| 0.0000175365 | chain (ch) | |
| 0.00000190485 | cable length (cb) | |
| 0.00000175365 | furlong (fur) | |
| 3.52778e-07 | kilometer (km) | |
| 2.19206e-07 | mile (mi) | |
| 1.90485e-07 | nautical mile (nmi) | |
| 7.30686e-08 | league (lea) | |
| 3.52778e-10 | megameter (Mm) | |
| 5.53724e-11 | Earth radius (REarth) | |
| 1.17674e-12 | light-second (ls) | |
| 9.17739e-13 | lunar distance (LD) | |
| 5.07083e-13 | solar radius (Rsun) | |
| 1.96123e-14 | light-minute (lmin) | |
| 2.35817e-15 | astronomical unit (AU) | |
| 3.72886e-20 | light-year (ly) | |
| 1.14327e-20 | parsec (pc) | |
| 1.14327e-23 | kiloparsec (kpc) | |
| 1.14327e-26 | megaparsec (Mpc) | |
| 1.14327e-29 | gigaparsec (Gpc) |