|
Units of length |
|
|
1millimetre
|
= 0.03937
inch
|
|
10
mm
|
= 1
centimetre
|
= 0.3937
inch
|
|
10
cm |
=1
decimetre
|
=3.937inches
|
|
10 dm
|
= 1
metre
|
=39.37inches
|
|
10
m |
= 1
decametre
|
=10.94
yards
|
|
10
dam |
= 1
hectometre
|
= 109.4
yards
|
|
10 hm
|
=1
kilometre
|
=
0.6214mile
| | |
|
Units of
capacity |
|
|
1
millitre
|
= 0.00176
pint
|
|
10
ml
|
= 1
centilitre
|
= 0.0176
pint
|
|
10
cl
|
= 1
decilitre
|
= 0.176
pint
|
|
1
dl
|
= 1
litre
|
= 1.76
pints = 0.22 uk
gallon
|
|
10
l |
= 1
decalitre
|
= 2.20
gallons
|
|
10
dal |
= 1
hectolitre
|
= 22.0
gallons
|
|
10
hl |
= 1
kilolitre
|
= 220.0
gallons
| | |
|
Square
measure |
| |
1 square
millimetre |
= 0.00155 square
inch |
| 100 mm2 |
= 1 square centimetre |
= 0.1550 square inch |
| 100
cm2 |
= 1 square metre= 1 square
metre |
= 1.196 square
yards |
| 100 m2 |
= 1 are |
= 119.6 square yards |
| 100 ares |
= 1
hectare |
= 2.471 acres |
| 100 ha |
= 1 square kilometre |
= 247.1 acres
| |
|
Circular
measura |
|
1
micrordian
|
= 0.206
seconds
|
|
|
1000 µ
rad |
= 1
milli-
|
|
|
|
radian
|
= 3.437
minutes
|
|
1000
mrad
|
= 1
radian
|
=
57.296
|
|
|
degrees |
= 180 /
π degrees
| | |
|
Square
measura |
|
|
1 Square
inch |
= 645.16
mm2 |
|
144 Square
inches |
= 1 Square
foot |
= 0.0929
m2 |
|
9 Square
feet |
= 1 Square
yard |
=
0.8361m2 |
|
4840 Square
yards |
= 1
acre |
= 4047
m2 |
|
640
acres |
= 1 Square
mile |
= 259
ha | | |
|
Cubic
measure |
|
|
1 cubic
inch
|
= 16.39
cm3
|
|
1728 cubic
inches
|
= 1 cubic
foot
|
= 0.02832
m3
|
|
|
|
= 28.32
dm3
|
|
27 cubic
feet
|
= 1 cubic
yard
|
= 0.7646
m3
|
|
|
|
= 764.6
dm3 | | |
|
Circular
measure |
|
|
1
second |
= 4.860
µrad |
|
60
seconds |
= 1
minute |
= 0.2909
µrad |
|
60
minutes |
= 1
degree |
= 17.45
µrad |
|
|
|
/180 π= |
|
45
degree |
=1oxtant |
=
π / 4
rad |
|
60
degree |
= 1
sextant |
=
π / 3
rad |
|
90
degree |
= 1 quadrant
or |
|
|
|
1 right
angle |
=
π / 2 rad |
|
360
degree |
= 1 circle
or |
|
|
|
1
circumference |
= 2
π
rad |
|
1 grade
or |
= 1/100th of
a |
|
|
gon |
right
angle |
=
π/200
rad | | |
|
Units of weight |
|
|
1
grain |
= 64.8
mg |
|
|
1
dram |
= 1.772
g |
|
16
drams |
=1 ounce
|
=28.35
g |
|
16
ounces |
=1
pound
|
=0.4536
kg |
|
14
pounds |
=1
stone |
= 6.350
kg |
|
2
stones |
=1
quarter |
= 12.70
kg |
|
4
quarters |
=1
(long) |
|
|
|
hundredweight |
= 50.80
kg |
|
20
hundredweight |
=1 (long)
ton |
= 1.016
tonnes |
|
100
pounds |
=1
(short) |
|
|
|
hundredweight |
= 45.36
kg |
|
2000
pounds |
= 1 (short)
ton |
=
0.9072 |
|
|
|
tonnes
| | |
|
Units of
length |
|
|
1
inch
|
= 2.54
cm
|
|
12
inches
|
= 1
foot
|
=
0.3048m
|
|
3
feet
|
= 1
yard
|
= 0.9144
m
|
|
5½
yard
|
= 1 rod,
pole,or
|
|
|
|
Perch
|
= 5.029
m
|
|
22
yards |
= 1
chain
|
=
20.12m
|
|
10
chains |
= 1
furlong
|
= 0.2012
km
|
|
8
furlongs
|
= 1
mile
|
= 1.609
km
|
|
6076.12
feet |
= 1
nautical mile
|
=
1852m
| |
|
Units of
capacity |
|
|
1 fluid
ounce |
= 28.41
cm3
|
|
5 fluid
ounces |
=
1gill |
=
0.1421dm3
|
|
4
gills |
=
1
pint |
= 0.5683
dm3
|
|
2
pints |
= 1
quart
|
= 1.137
dm3
|
|
4
quarts |
= 1 (uk)
gallon |
= 4.546
dm3 |
|
231 cubic
inches |
= 1 (us)
gallon |
= 3.785
dm3 |
|
8
gallons |
= 1
bushel |
= 36.369
dm3 | | | |
|
Units of
weight |
|
1
milligram |
=
0.015 grain
|
10 mg
|
=
1 centigram
|
=
0.154 grain
|
10 cg
|
=
1 decigram
|
=
1.543 grain
|
10 dg
|
= 1 gram |
=
15.43 grains = 0.035 ounces |
10 g
|
=
1 decagram
|
=
0.353
ounce
|
10 dag
|
=
1 hectogram
|
=
3.527 ounces
|
10 hg
|
= 1
kilogram |
=
2.205 pound
|
1000 kg
|
= 1 tonne |
=
0.984 (long) ton
|
|
(metric ton)
|
=
2204.62 pounds
| | |
|
Metric
prefixes |
|
|
Abbreviation |
Factor |
|
tera- |
T |
10
12 |
|
giga-
|
G |
109
|
|
mega- |
M |
106
|
|
kilo- |
K |
103
|
|
hecto-
|
h |
102
|
|
deca-
|
da |
101
|
|
deci- |
d |
10-1
|
|
centi-
|
c |
10-2
|
|
milli- |
m |
10-3
|
|
micro- |
µ |
10-6
|
|
nano- |
n |
10-9
|
|
pico- |
p |
10-12
|
|
femto- |
f |
10-15
|
|
atto- |
a |
10-18
| | |
|
US
liquid measure |
|
1 fluid
ounce |
= 1.0408 uk
fluid ounces |
|
|
= 0.0296
dm3 |
|
16 fluid
ounces |
= 1 pint =
0.8327 uk pint |
|
|
= 0.4732
dm3 |
|
8
pints |
= 1 gallon =
0.8327 uk gallon |
|
|
= 3.7853
dm3 | | |
|
US dry
measur |
|
1
pint |
= 0.9689
uk pint |
= 0.5506
dm3 |
|
1
bushel |
= 0.9689 uk
bushel |
= 35.238
dm3 | | |
|
Cubic
measure |
|
|
1 cubic
centimetre
|
= 0.06102
cubic inch
|
|
1000
cm3
|
= 1 cubic
decimetre
|
= 0.03532
cubic foot
|
|
1000
dm3
|
= 1 cubic
metre
|
= 1.308
cubic yards
| | | |
