Quantity |
Level
Cat. |
Use
Id. |
Name |
Convesion factors to SI units (1 unit equals)
|
Represen.
Symbol |
Cross
ref. |
|
|
Space and Time |
|
angle (plane)
|
1
|
|
radian
|
|
rad
|
1
|
| |
1S
|
|
milliradian
|
|
mrad
|
2
|
| |
1S
|
|
microradian
|
|
µrad
|
3
|
| |
1
|
|
degree
|
|
°
|
4
|
| |
1
|
|
minute
|
|
'
|
5
|
| |
1
|
|
second
|
|
"
|
6
|
| |
2
|
X
|
grade
|
1 gon = 0,015 707 96 rad
|
|
7
|
| |
2
|
|
gon
|
|
gon
|
8
|
| solid angle
|
1
|
|
steradian
|
|
sr
|
9
|
| length
|
1
|
|
metre
|
|
m
|
10
|
| breadth
|
1M
|
|
decimetre
|
|
dm
|
11
|
| height
|
1S
|
|
centimetre
|
|
cm
|
12
|
| thickness
|
1S
|
|
micrometre (micron)
|
|
µm
|
13
|
| radius
|
1S
|
|
millimetre
|
|
mm
|
14
|
| radius of curvature
|
1M
|
|
hectometre
|
|
hm
|
15
|
| cartesian coordinates
|
1S
|
|
kilometre
|
|
km
|
16
|
| diameter
|
1S
|
|
nanometre
|
|
nm
|
17
|
| length of path
|
1S
|
|
picometre
|
|
pm
|
18
|
| distance
|
1S
|
|
femtometre
|
|
fm
|
19
|
| |
1M
|
|
decametre
|
|
dam
|
20
|
| |
1
|
|
nautical mile
|
1852 m (exactly)
|
n mile
|
21
|
| |
1
|
|
ångström
|
10-10 m (exactly)
|
Å
|
22
|
| |
1
|
|
astronomical unit
|
1,495 978 70 x 1011 m
|
AU
|
23
|
| |
1
|
|
parsec
|
3,085 678 x 1016 m
|
pc
|
24
|
| |
2
|
|
fathom
|
1,828 8 m
|
|
25
|
| |
2
|
|
chain
|
20,116 8 m
|
ch
|
26
|
| |
2
|
|
inch
|
25,4 mm (exactly)
|
in
|
27
|
| |
2
|
|
micro-inch
|
|
µin
|
28
|
| |
2
|
|
foot
|
0,304 8 m (exactly)
|
ft
|
29
|
| |
2
|
|
yard
|
0,914 4 m
(exactly)
|
yd
|
30
|
| |
2
|
|
mile (statute mile)
|
1 609,344 m (exactly)
|
mile
|
31
|
| |
2
|
|
milli-inch
|
|
mil
|
32
|
| |
2
|
|
light year
|
9,460 53 x 1015 m
|
l.y.
|
33
|
| area
|
1
|
|
square metre
|
|
m²
|
34
|
| |
1S
|
|
square kilometre
|
|
km²
|
35
|
| |
1
|
|
are
|
100 m² (exactly)
|
a
|
36
|
| |
1M
|
|
decare
|
|
daa
|
37
|
| |
1S
|
|
hectare
|
104 m² (exactly)
|
ha
|
38
|
| |
1S
|
|
square centimetre
|
|
cm²
|
39
|
| |
1S
|
|
square decimetre
|
|
dm²
|
40
|
| |
1S
|
|
square millimetre
|
|
mm²
|
41
|
|
2
|
|
square inch
|
6,4516 cm² (exactly)
|
in²
|
42
|
| area
|
2
|
|
square foot
|
0,092 903 04 cm² (exactly)
|
ft²
|
43
|
| |
2
|
|
square yard
|
0,836 127 36 m²
|
yd²
|
44
|
| |
2
|
|
square mile
|
2,589 988 km²
|
mile²
|
45
|
| |
2
|
|
acre
|
4046,856 m²
|
acre
|
46
|
| volume
|
1
|
|
cubic metre
|
|
m³
|
47
|
| |
1M
|
|
mega litre
|
|
Ml
|
48
|
| |
1
|
|
litre
|
10-³m³ (exactly)
|
l
|
49
|
| |
1S
|
|
cubic millimetre
|
|
mm³
|
50
|
| |
1S
|
|
cubic centimetre
|
|
cm³
|
51
|
| |
1S
|
|
cubic decimetre
|
|
dm³
|
52
|
| |
1S
|
|
millilitre
|
|
ml
|
53
|
| |
1S
|
|
hectolitre
|
|
hl
|
54
|
| |
1S
|
|
centilitre
|
|
cl
|
55
|
| |
1M
|
|
decilitre
|
|
dl
|
56
|
| |
1M
|
|
microlitre
|
|
µl
|
57
|
| |
1M
|
|
kilolitre
|
|
kl
|
58
|
| |
1M
|
|
decalitre
|
|
dal
|
59
|
| |
2
|
|
standard cubic foot
|
|
|
60
|
| |
2
|
|
cubic inch
|
16,387 064 cm³ (exactly)
|
in³
|
61
|
| |
2
|
|
cubic foot
|
28,316 85 dm³ (exactly)
|
ft³
|
62
|
| |
2
|
|
cubic yard
|
0,764 555 m³
|
yd³
|
63
|
| |
2
|
|
gallon (UK)
|
4,546 092 dm³ (exactly)
|
gal (UK)
|
64
|
| |
2
|
|
gallon (US)
|
3,785 412 dm³
|
gal (US)
|
65
|
| |
2
|
|
pint (US)
|
|
|
66
|
| |
2
|
|
pint (UK)
|
0,568 261 25 dm³ (exactly)
|
pt (UK)
|
67
|
| |
2
|
|
quart (UK)
|
1,136 523 dm³
|
qt (UK)
|
68
|
| |
2
|
|
liquid pint (US)
|
0,473 176 5 dm³
|
liq pt (US)
|
69
|
| |
2
|
|
liquid quart (US)
|
0,946 353 dm³
|
liq qt (US)
|
70
|
| |
2
|
|
dry pint (US)
|
0,550 610 5 dm³
|
dry pt (US)
|
71
|
| |
2
|
|
fluid ounce (UK)
|
28,4131 3 cm²
|
fl oz (UK)
|
72
|
| |
2
|
|
quart (US)
|
|
|
73
|
| |
2
|
|
fluid ounce (US)
|
29,5735 cm³
|
fl oz (US)
|
74
|
| |
2
|
|
bushel (UK)
|
36,368 72 dm³
|
bushel (UK)
|
75
|
| |
2
|
|
bushel (US)
|
35,239 07 dm³
|
bu (US)
|
76
|
| |
2
|
|
barrel (US) (petroleum etc.)
|
158,987 3 dm³
|
barrel (US)
|
77
|
| |
2
|
|
dry barrel (US)
|
115,627 1 dm³
|
bbl (US)
|
78
|
| |
2
|
|
dry gallon (US)
|
4,404 884 dm³
|
dry gal (US)
|
79
|
| |
2
|
|
dry quart (US)
|
1,101 221 dm³
|
dry qt (US)
|
80
|
| time
|
1
|
|
second
|
|
s
|
81
|
| |
1
|
|
minute
|
60 s
|
min
|
82
|
| |
1
|
|
hour
|
3600 s
|
h
|
83
|
| time
|
1
|
|
day
|
86 400 s
|
d
|
84
|
| |
1S
|
|
kilosecond
|
|
ks
|
85
|
| |
1S
|
|
millisecond
|
|
ms
|
86
|
| |
1S
|
|
microsecond
|
|
µs
|
87
|
| |
1S
|
|
nanosecond
|
|
ns
|
88
|
| |
2
|
|
week
|
|
|
89
|
| |
2
|
|
month
|
|
|
90
|
| |
2
|
|
year
|
|
a
|
91
|
| |
2
|
|
tropical year
|
31 556 926 s
|
trop
|
92
|
| |
1
|
|
radian per second
|
|
rad/s
|
93
|
| angular acceleration
|
1
|
|
radian per second squared
|
|
rad/s²
|
94
|
| velocity
|
1
|
|
metre per second
|
|
m/s
|
95
|
|
phase velocity
|
1S
|
|
kilometre per hour
|
0,277 778 m/s
|
km/h
|
96
|
| group velocity
|
1S
|
|
millimetre per second
|
|
mm/s
|
97
|
| |
1S
|
|
centimetre per second
|
|
cm/s
|
98
|
| |
1M
|
|
metre per minute
|
|
m/min
|
99
|
| |
1
|
|
knot
|
0,514 444 m/s
|
kn
|
100
|
| |
2
|
|
foot per minute
|
|
ft/min
|
101
|
| |
2
|
|
inch per second (vibration)
|
|
in/s
|
102
|
| |
2
|
|
inch per second (linear speed)
|
|
in/s
|
103
|
| |
2
|
|
foot per second
|
0,304 8 m/s (exactly)
|
ft/s
|
104
|
| |
2
|
|
mile per hour
|
0,447 04 m/s (exactly)
|
mile/h
|
105
|
|
acceleration
|
1
|
|
metre per second squared
|
|
m/s²
|
106
|
| acceleration of free fall
|
1S
|
|
gal
|
0,01m/s² (exactly)
|
Gal
|
107
|
| acceleration due to gravity
|
1M
|
|
milligal
|
|
mGal
|
108
|
| |
2
|
|
foot per second squared
|
0,304 8 m/s² (exactly)
|
ft/s²
|
109
|
| |
2
|
|
inch per second squared (acceleration)
|
|
in/s2
|
110
|
| |
2
|
|
inch per second squared (vibration acceleration)
|
|
in/s2
|
111
|
| curvature
|
1
|
|
reciprocal metre
|
|
m-¹
|
112
|
|