| 1 Astronomical Unit (AU) = 1.496 x 1011 m ≃ 1.5 x 1011 m |
| 1 Light Year (ly) = 9.46 x 1015 m = 6.3 x 104 AU |
| 1 par sec = 3.1 x 1016 m = 3.26 ly |
| 1 inch = 0.0254 m |
| 1 foot = 0.3048 m |
| 1 yard = 0.9144 m |
| 1 mile = 1.609 x 103 m |
| 1 nautical mile = 1.852 x 103 m |
| 1 fermi or femtometre (fm) = 10-15 m |
| 1 X-ray unit (X) = 10-13 m |
| 1 picometre (pm) = 10-12 m |
| 1 angstrom (Å) = 10-10 m |
| 1 nanometre (nm) = 10-9 m |
| 1 micron or micro-metre (µm) = 10-6 m |
| 1 millimetre (mm) = 10-3 m |
| 1 centimetre (cm) = 10-2 m |
| 1 decimetre (dm) = 10-1 m |
| 1 decametre (dam) = 10 m |
| 1 hectometre (hm) = 102 m |
| 1 kilometre (km) = 103 m |
| 1 megametre (Mm) = 106 m |
| 1 gigametre (Gm) = 109 m |
| 1 terametre (Tm) = 1012 m |
| 1 barn = 10-28 m2 |
| 1 acre = 4047 m2 |
| 1 hectare = 104 m2 |
| 1 tonne or metric ton = 1000 kg |
| 1 quintal = 100 kg |
| 1 slug = 14.57 kg |
| 1 atomic mass unit (a.m.u) = 1.66 x 10-27 kg |
| 1 solar year = 365.25 average solar days = 366.25 sidereal day |
| 1 Lunar Month = 27.3 days |
| 1 shake = 10-8 sec |
| 1 bar = 760 torr |
Comments (No)