General Knowledge - Measurements
The following table explains the metric units and their measurements −
| Term |
Symbol |
value |
| yotta |
Y |
1024 |
| zetta |
Z |
1021 |
| exa |
E |
1018 |
| peta |
P |
1015 |
| tera |
T |
1012 |
| giga |
G |
109 |
| mega |
M |
106 |
| kilo |
k |
103 |
| hecto |
h |
102 |
| deka |
da |
101 |
| deci |
d |
10-1 |
| centi |
c |
10-2 |
| milli |
m |
10-3 |
| micro |
μ |
10-4 |
| nano |
n |
10-9 |
| pico |
p |
10-12 |
| femto |
f |
10-15 |
| atto |
a |
10-18 |
| zepto |
z |
10-21 |
| yocto |
y |
10-24 |
Units of Length
| Units |
Measurement |
| 10 millimeters (mm) = |
1 centimeter (cm) |
| 10 centimeters = |
1 decimeter (dm) |
| 10 decimeters = |
1 meter (m) |
| 10 meters = |
1 dekameter |
| 10 dekameters = |
1 hectometer |
| 10 hectometers = |
1 kilometer |
Units of Area
| Units |
Measurement |
| 100 square millimeters (mm2) = |
1 square centimeter (cm2) |
| 100 square centimeters = |
square decimeter (dm2) |
| 100 square decimeters = |
quare meter (m2) |
| 100 square meters = |
1 square dekameter (dam2) |
| 100 square dekameters = |
1 square hectometer (hm2) |
| 100 square hectometers = |
1 square kilometer (km2) |
Units of Liquid Volume
| Units |
Measurement |
| 10 milliliters (mL) = |
1 centiliter (cL) |
| 10 centiliters = |
1 deciliter (dL) = 100 milliliters |
| 10 deciliters = |
1 liter1 = 1000 milliliters |
| 10 liters = |
1 dekaliter (daL) |
| 10 dekaliters = |
1 hectoliter (hL) = 100 liters |
| 10 hectoliters = |
1 kiloliter (kL) = 1000 liters |
Units of Volume
| Units |
Measurement |
| 1000 cubic millimeters (mm3) = |
1 cubic centimeter (cm3) |
| 1000 cubic centimeters = |
1 cubic decimeter (dm3) |
| 1000 cubic decimeters = |
1 cubic meter (m3) |
Units of Mass
| Units |
Measurement |
| 10 milligrams (mg) = |
1 centigram (cg) |
| 10 centigrams = |
1 decigram (dg) |
| 10 decigrams = |
1 gram (g) |
| 10 grams = |
1 dekagram (dag) |
| 10 dekagrams = |
1 hectogram (hg) |
| 10 hectograms = |
1 kilogram (kg) |
| 1000 kilograms = |
1 megagram (Mg) or 1 metric ton(t) |
Units of Length (Area)
| Units |
Measurement |
| 12 inches (in) = |
1 foot (ft) |
| 3 feet = |
1 yard (yd) |
| 16½ feet = |
1 rod (rd), pole, or perch |
| 40 rods = |
1 furlong (fur) = 660 feet |
| 8 furlongs = |
1 U.S. statute mile (mi) = 5280 feet |
| 1852 meters (m) = |
1 international nautical mile |
International System of Units
| Unit Name |
Symbol |
Quantity |
| meter |
m |
Length |
| kilogram |
kg |
Mass |
| second |
s |
Time |
| ampere |
A |
Electric Current |
| kelvin |
K |
Thermodynamic temperature |
| mole |
mol |
Amount of substance |
| candela |
cd |
Luminous intensity |
| radian |
rad |
Angle |
| steradian |
sr |
Solid Angle |
| hertz |
Hz |
Frequency |
| newton |
N |
Force, weight |
| pascal |
Pa |
pressure, stress |
| joule |
J |
energy, work, heat |
| watt |
W |
Power, radiant, flux |
| coulomb |
C |
Electric charge |
| volt |
V |
Voltage, electromotive force |
| farad |
F |
Electric capacitance |
| ohm |
Ω |
Electric resistance |
| tesla |
T |
Magnetic flux density |
| degree Celsius |
0C |
Temperature |
| becquerel |
Bq |
radioactivity |
| henry |
H |
Magnetic induction |
| Angstrom |
Å |
Wave length |
Conversion of Units
| Unit I |
Value in another unit |
| 1 Inch |
2.54 centimeter |
| 1 Foot |
0.3048 meter |
| 1 Foot |
30.48 centimeter |
| 1 Yard |
0.9144 meter |
| 1 Mile |
1609.34 meter |
| 1 Chain |
20.1168 meter |
| 1 Nautical mile |
1.852 kilometer |
| 1 Angstrom |
10-10 meter |
| 1 Square inch |
6.4516 square centimeter |
| 1 Acre |
4046.86 square meter |
| 1 grain |
64.8 milligram |
| 1 dram |
1.77 gm |
| 1 ounce |
28.35 gm |
| 1 pound |
453.592 gram |
| 1 horse power |
735.499 Watt |
