What is the Difference between KB vs. MB

KB, MB, and GB are the common units of information volume used in computer storage. A bit is the smallest unit of information. It is either a 0 or 1. You can count bits, but it’s not very practical since humans don’t have 10 fingers.

A byte is the next smallest unit and is equal to 8 bits. All other units of information are derived from bits and bytes and represent a certain number of bits (or bytes).

Also Read: What is bigger MB vs GB?

There is a difference between KB and MB and between MB and GB. The following table shows the relationship between these three terms:

1KB = 1,024 bytes = 2^10 = 1024 bytes

1MB = 1,048,576 bytes = 2^20 = 1,048,576 bytes

1GB = 1,073,741,824 bytes = 2^30 = 1,073,741,824 bytes

In simple words, each successive term indicates a tenfold increase in the number of bits or bytes.

KB and MB are quite often used for file sizes. However, even if you’re not a computer geek, there is no way to confuse the two because they are always written as uppercase. And they are never abbreviated (at least not in general use).

KB vs. MB
KB vs. MB

There is one exception where these units of measurement get mixed up, though. That is when you’re dealing with processor speeds. For example, a 2 GHz processor can be either 2 GHz or 2.048 GHz depending on context.

In those situations, it’s important to know that 1 GHz = 109 Hz and 1 GHz = 1000 MHz (106 Hz).

But if you’re just looking at a computer file size, don’t worry about this little bit of confusion. You’ll never see KB or MB written as kB or Mb so there’s nothing to worry about there.

KB versus MB. Both of these units are common when talking about storage space or file size. But which is which, and why do they use different abbreviations?

For starters, it’s important to know that a byte (B) is made up of 8 bits (b), and a bit is the smallest unit of computer data. A byte can have a value of either 0 or 1, but both bits together can represent any number from 0 to 255.

The “K” in Kb stands for kilo, which means one thousand. So one kilobyte (KB) is equal to 1,024 bytes, or 2 to the 10th power in base-10 math.

The “M” in Mb stands for mega, which means one million. One megabyte (MB) is equal to 1,048,576 bytes or 2 to the 20th power in base-10 math. To convert between the two units all you need to do is divide by 1,024 or multiply by 1,048,576. For example:

1 MB = 1,048,576 bytes = 2^20 /1024/1024 bytes

1 KB = 1024 bytes = 2^10 /1024/1024 bytes

To convert from KB to MB multiply by 1

SymbolWhat it isHow it is readHow it is usedSample expression
+Addition sign
Logical OR symbol
… plus …
… or …
Sum of a few values
Logical disjunction
3 + 5 = 8
¬(A + B) = ¬A * ¬B
*Multiplication sign
Logical AND symbol
… times …
… and …
Product of two values
Logical conjunction
3 x 5 = 15
¬(A * B) = ¬A + ¬B
xMultiplication sign… times …Product of two values3 x 5 = 15
·Multiplication sign… times …Product of two values3 · 5 = 15
summation signThe summation of …Sum of many or
infinitely many values
Integral signThe integral of …integrationx2 dx = x3/3 + c
Double integral signThe double integral of …integration f(x,ydx dy
Triple integral signThe triple integral of …integration f(x,y,zdx dy dz
Line integral signThe line integral of …integration F  dx
Surface integral signThe surface integral of …integration F(x,y,zdx dy
Subtraction sign
Minus sign
… minus …
Negative…
Difference of two values,
negative number
3 – 5 = -2
±Plus/minus sign… plus or minus …Expression of range,
error, or tolerance
500 kbps ± 10%
dot product sign… dot …Scalar (dot) product
of two vectors
A  B = B  A
xCross product sign… cross …Vector (cross) product
of two vectors
A x B = – (B x A)
Product signThe product of …Product of three up to
infinitely many values
^Carat… to the power of …exponent2 ^ 5 = 32
!Exclamation… factorialProduct of all positive
integers up to a
certain value
5! = 120
Surd… root of …Algebraic expressionsz = (x + y)
Square root symbolThe square root of …Algebraic expressions
Continuation sign… and so on up to …
… and so on indefinitely
Extension of sequenceS = {1, 2, 3, …}
/Slash… divided by …
… over …
Division3/4 = 0.75
÷Division sign… divided by …Division3 ÷ 4 = 0.75
Percent symbol… percent …Proportion0.032 = 3.2 
Per mil symbol… per mil …Proportion0.032 = 32 
:Colon,
ratio sign
… is to …
… such that …
… it is true that …
Division or ratio,
symbol following
logical quantifier or
used in defining a set
2:4 = 20:40x : x > 4 and x < 5x : x < 0 or x > -1S = {x : x < 3}
|Vertical line… such that …
…it is true that …
Symbol following
logical quantifier or
used in defining a set
x | x > 4 and x < 5x | x < 0 or x > -1S = {x | x < 3}
::Double colon… averaged with …arithmetic mean3 :: 11 = 7
lemniscate… infinity
… increases without limit
Infinite summations
Infinite sequence
Limit
x : x <  
(  )Parentheses…quantity…
…list…
…set of coordinates…
…open interval
Denotes a quantity, list,
set of coordinates, or an
open interval
(x + y) + z
(a1a2a3a4)
(x,y,z)
(3,5)
[  ]Square brackets… the quantity …
… the closed interval …
Denotes a quantity or a
closed interval
w + [(x + y) + z]
[3,5]
(  ]Hybrid brackets… the half-open interval …Denotes a
half-open interval
(3,5]
[  )Hybrid brackets… the half-open interval …Denotes a
half-open interval
[3,5)
{  }Curly brackets… the quantity …
… the SET …
Denotes a quantity or a SETE = {2, 4, 6, 8, …}
=Equal sign… equals …Indicates two values
are the same
-(-5) = 5
2z2 + 4z – 6 = 0
proportionality sign… is proportional to …Indicates two variables
change in direct proportion
x  y
~Similarity sign… is similar to …Indicates two objects are
geometrically similar
ABC ~ DEF
Approximate
equal sign
… is approximately equal to …Indicates two values are
close to each other
x + y  z
Inequality sign… is not equal to …Indicates two values
are different
x  y
<Inequality sign… is less than …Indicates value on left
is smaller than
value on right
3 < 5
x < y
Inequality sign… is less than or equal to …
… is at most equal to …
Indicates value on left
is smaller than or equal to
value on right
x  y
>Inequality sign… is greater than …Indicates value on left
is larger than
value on right
5 > 3
x > y
Inequality sign… is greater than or equal to …Indicates value on left
is larger than or equal to
value on right
x ≥ y
|  |absolute value signThe absolute value of …Distance of value from
origin in number line,
plane, or space
| -3 | = 3
increment sign,
Triangle symbol
the change in …
triangle …
Indicates a small change,
Denotes vertices of the triangle
m = y / x
ABC = DEF
Perpendicularity
symbol
… is perpendicular to …GeometryL  M
//Parallel symbol… is parallel to …GeometryL // M
Angle symbolAngle …GeometryABC = DEF
Existential quantifierFor some …
There exists a(n) …
Logical statementsx : x > 4 and x < 5
Universal quantifierFor all …
For every …
Logical statementsx : x < 0 or x > -1
¬Logical negation
symbol
not …Logical statements¬(¬A)  A
logical implication
symbol
… implies …
If … then …
Logical statements B
logical equivalence
symbol
… is logically equivalent to …
… if and only if ..
Logical statements B
Three dots… therefore …
… it follows that …
Logical statements or
mathematical proofs
x = y and y = z
 x = z
Element-of
symbol
… is an element of
a set …
Setsa  A
Not-element-of
symbol
… is not an element of
a set …
Setsb  A
Subset symbol… is a subset of …Sets B
Proper subset symbol… is a proper subset of …Sets B
Union symbol… union …Sets B = B  A
Intersection symbol… intersect …
… intersected with …
Sets B = B  A
Null symbolThe null set
The empty set
Sets = { }
Hebrew aleph
(uppercase)
Aleph …Transfinite cardinal1 + 0 = 1
ºDegree symbol… degree(s)Angular measure
Temperature
T = +20 ºC
 θGreek theta
(lowercase)
… theta …Angular variable θ = 90º
φGreek phi
(lowercase)
… phi …Angular variable = 45º
λGreek lambda
(lowercase)
… lambda …Wavelength
Ratio
Eigenvalue
Lebesgue measure
 = 70 cm
 = 3:1
µGreek mu
(lowercase)
micro- (10-6)Prefix multiplierC = 0.001 µF
Greek pi
(lowercase)
… pi …General science  3.14159
Greek omega
(uppercase)
… omega …The volume of an object
Ohms (resistance)
R2 = 330 
Greek omega
(lowercase)
… omega …Transfinite ordinal
Angular velocity
Period
 = 36,000 rad/s
 = 1/60 s
NEnhanced or bold NThe set of natural numbersNumber theory
Set theory
 = {0, 1, 2, 3, …}
ZEnhanced or bold ZThe set of integersNumber theory
Set theory
 = {0, 1, -1, 2, -2, 3, -3, …}
QEnhanced or bold QThe set of rational numbersNumber theory
Set theory
 = {a/b | a and b are in }
REnhanced or bold RThe set of real numbersNumber theory
Set theory
What is the cardinality of ?
This an important chart worth saving during the studies

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