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What Are Measurement Units With Table In Physics?

Tables of units in the International System

conventional reference that is used to measure the physical magnitude of a certain object, substance or phenomenon is called a unit of measurement.

This reference is established by establishing by convention a standard quantity, which allows the dimensions of the matter to be calculated.

Measurement units allow you to calculate or measure different characteristics and properties. Some are length, mass, surface area, volume, temperature, time, electrical intensity or luminous intensity.

Units of measurement have been used since ancient times. For this reason, they have varied over time, depending on human needs and available technology. This implies that various systems of measurement units have existed and exist.

Tables of units in the International System

Currently, the International System of Units (SI) is the most widespread system of units, based on the decimal metric system.

In this system, there are a series of basic or fundamental magnitudes, which are:

Magnitudes Unit of measurement Unity symbol
Length Meter m
Mass Kilogram kg
Time Second yes
Temperature Kelvin K
Electric current intensity Amp TO
Amount of substance Mol mole
Luminous intensity Candle CD

From this list, the International System of Units contemplates a set of derived measurement units . Among them, we can mention the following:

Derived magnitude Unit of measurement Unity symbol
Volume Cubic meter / liter 3 or L
Density Kilogram per cubic meter kg/m 3
Frequency Hertz or hertz Hz
Force Newton N
Work and energy July J.
Pressure Pascal Da
Power Watt or watt W
electric charge Coulomb or coulomb c
Electric potential Volt V
Electric resistance Ohm or ohm Ω
Absorbed radiation dose Sievert Sv

Units of length measurement in the SI

Unit Symbol Equivalence
Kilometer km 1000m
hectometer hmm 100m
Decameter dam 10m
Meter m 1m
Decimeter dm 0.1m
Centimeter cm 0.01m
Millimeter mm 0.001m

Units of surface measurement in the SI

Unit Symbol Equivalence
Square kilometer km 2 1,000,000 m2
square hectometer hm 2 10 000 m 2
square decameter dam 2 100 m 2
Square meter 2 1 m 2
square decimeter dm 2 0.01 m 2
Square centimeter cm 2 0.0001 m 2
square millimeter mm 2 0.000001 m 2

Units of mass measurement in the SI

Unit Symbol Equivalence
Kilogram kg 1000g
Hectogram hg 100g
Decagram dag 10g
Gram g 1g
Decigram dg 0.1g
Centigram cg 0.01g
Milligram mg 0.001g

Units of measurement of capacity in the SI

Unit Symbol Equivalence
Kiloliter kl 1000 l.
Hectolitre hl 100 l.
Decaliter dal 10 l.
Liter l 1 l.
Deciliter dl 0.1 l.
centiliter cl 0.01 l.
Milliliter ml 0.001 l.

Units of volume measurement in the SI

Unit Symbol Equivalence
cubic kilometer km 3 1,000,000,000 m3
cubic hectometer hc 3 1,000,000 m3
cubic decameter dac 3 1 000 m 3
Cubic meter 3 1 m 3
cubic decimeter dc 3 0.0001 m 3
Cubic centimeter cm 3 0.000001 m 3
cubic millimeter mm 3 0.000000001 m 3

Anglo-Saxon system of measurement units

To date, the only countries that have not adopted the International System of Units are the United States, Burma and Liberia.

In these countries the so-called Anglo-Saxon model of units is still used , which applies to the magnitudes of mass, length, surface and volume.

  • Length: in this model the following units of measurement are used: inch (in), foot (ft), yard (yd), rod (rd), chain (ch), furlong (fur), mile (mi) and league .
  • Area: square foot (sq ft or ft²); square yard (sq yd or yd²); square rod (sq rd or ”rd²); Rood; acre (ac); homestead; square mile (sq mi or mi²) and square league.
  • Mass: grain (gr), drachma; ounce (oz); pound (lb); stone (st); at sign; short quintal (US ctw); long quintal (UK ctw); short quarter (US qtr); long quarter (UK qtr); short ton (US ton); long ton (UK ton).
  • Volume :
    • Volume for solids: cubic inch (in³ or cu in); cubic foot (ft³ or cu ft); cubic yard (yd³ or cu yd); acre-foot; cubic mile (mi³ or cu mi).
    • Dry volume: pint (pt); quarter (qt); gallon (gal); peck(pk); bushel (bu).
    • Volume for liquids: minimum; liquid drachma (fl dr); fluid ounce (fl oz); gill; pint (pt); quarter (qt); gallon (gal) and barrel.

Equivalences between the Anglo-Saxon model and the SI

To better understand the equivalences between both systems, let’s follow the following scheme where the most used units are expressed:

  • Mass
    • 1 ounce = 28.35 g
    • 1 pound ( pound ) = 453.6 g
    • 1 stone ( stone ) = 6.35 kg
  • Length
    • 1 inch = 2.54 cm
    • 1 foot = 30.48 cm
    • 1 yard = 91.44 cm
    • 1 mile = 1,609 km
  • Volume
    • 1 pint ( pint ) = 473.17 ml
    • 1 gallon ( gallon ) = 3.78 l

Units of measurement in computing

Computing today covers all areas of production and social communication. Therefore, it is advisable to know the current units of measurement, which apply to all types of computing devices such as computers, smartphones and more.

Units of measurement in computing are classified according to three categories: storage, frequency (processor, memory and graphics) and communications (speed of data transfer).

Storage Measurement Units

The units of measurement for storage in computing use binary code as a reference.

Units Symbol Equivalence
Bit 1
Byte b 8 bits
Kilobyte K.B. 1024 bytes
Megabyte M.B. 1024KB
Gigabyte GB 1024MB
Terabyte T.B. 1024GB
Petabyte P.B. 1024TB
Exabyte E.B. 1024 PB
Zetabyte Z.B. 1024 EB
Yottabyte Y.B. 1024 ZB
Ronnabyte R.B. 1024 YB

Computing Frequency Measurement Units

The speed at which data is processed in computing, whether in reference to the processor, graphics or memory, among other elements, is measured in Hertz or hertz (hz). Currently, megahertz or megahertz (MHz) and gigahertz or gigahertz (GHz) are used.

Data transfer measurement units (computer communication)

The units of measurement in computer communication are expressed in bps , that is, bits per second. The main ones are:

Units Symbol Equivalence
Kilobit Kbps 1 000 bps
Megabit Mbps 1,000,000 bps or 1000 Kbps
Gigabit Gbps 1,000,000,000 bps or 1000 Mbps

Prefixes in units in the International System

Units can report the scale of the measurement based on the prefix that precedes them. It is different to talk about a centimeter than a meter or kilometer. Each prefix is ​​equivalent to a specific order of magnitude, which we show in the following table.

Prefix Symbol Multiplier
Quetta Q 10 30
Ronna R 10 27
yotta AND 10 24
Zetta Z 10 21
Exa AND 10 18
Peta Q 10 15
Tera T 10 12
Jig g 10 9
Mega M 10 6
kilo k 10 3
hecto h 10 2
said gives 10 1
I said d 10 -1
centi c 10 -2
milli m 10 -3
micro µ 10 -6
elder brother n 10 -9
beak p 10 -12
femto F 10 -15
atto to 10 -18
zepto z 10 -21
yocto and 10 -24
ronto r 10 -27
quecto q 10 -30

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