The following 21 Units are included in this category:
ID |
Unit (symbol) |
Definition |
Wikipedia page and other notes |
1 |
ångström (Å) |
10-10 m |
https://en.wikipedia.org/wiki/Angstrom
|
2 |
astronomical unit (AU) |
149,597,870,700 m |
|
3 |
chain (ch) |
66 ft |
|
4 |
centimetre (cm) |
10-2 m |
|
5 |
decametre (dam) |
10 m |
|
6 |
decimetre (dm) |
10-1 m |
|
7 |
fathom |
6 ft |
|
8 |
foot (ft) |
12 in = 0.3048 m |
|
9 |
hectometre (hm) |
100 m |
|
10 |
inch (in) |
0.0254 m |
|
11 |
kilometre (km) |
1000 m |
|
12 |
light-year (ly) |
9,460,730,472,580,800 m |
|
13 |
metre (m) |
- |
|
14 |
mile (mi) |
5280 ft = 1,760 yd = 1,609.344 m |
https://en.wikipedia.org/wiki/Mile Sometimes distinguished as the "land mile", "statute mile", or "international mile". Not to be confused with other types of miles
|
15 |
millimetre (mm) |
10-3 m |
|
16 |
nanometre (nm) |
10-9 m |
|
17 |
nautical mile (nmi) |
1852 m |
https://en.wikipedia.org/wiki/Nautical_mile Not to be confused with other types of miles |
18 |
parsec (pc) |
(648,000/π) AU |
|
19 |
thousandth of an inch (thou, mil) |
10-3 inches |
|
20 |
micrometre (μm) |
10-6 m |
|
21 |
yard (yd) |
3 ft = 0.9144 m |
All the above definitions of the various units are EXACT.
Note: In the above, a period (.) is used to indicate the decimal place and a comma (,) is used to separate groups of thousands.
Type of conversion relationship: DIRECTLY PROPORTIONAL (y=a∙x)
Example conversion diagram (see unit in red above):
