KB and also kB refer to kilobyte - a unit of info or computer storage equal to either 1,024 bytes (210) or 1,000 bytes (103), relying on context.

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MB describes megabyte - a unit of info or computer storage same to one of two people 1,048,576 bytes (220) or 1,000,000 bytes (106), depending on context. A megabyte has around 1,000 (or 1,024 to be precise) kilobytes.


Comparison chart

KB matches MB comparison chart
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KBMBStands for
Kilobyte Megabyte

Difference in between kB and kb, MB and Mb

kb is kilobits and kB is kilobytes. If MB is megabytes, Mb describes Megabits. 1 byte has actually 8 bits. Record sizes space usually express in KB and also MB vice versa, kb and Mb are often used come express data carry speeds (such as a 54 Mbps wireless router or 3G or 4G link speeds).

All units of details volume

A bit is the smallest unit of information. The is either a 0 or 1. A byte is the following smallest unit, and also is equal to 8 bits. All other units of info are acquired from bits and also bytes, and represent a certain variety of bits (or bytes).

Each unit has a prefix and suffix. The suffix denotes whether the unit is representing bits or bytes; the prefix denotes how countless bits/bytes are being conveyed. There are two species of prefixes:

Kilo-, mega-, giga-, tera-, peta-: these are the prefixes most widely used. They denote aggregations in devices of 1,000. Kilo- is 10001 Mega- is 10002 i.e., 1 million Giga- is 10003 i.e., 1 exchange rate Tera- is 10004 i.e., 1 sunshine Peta- is 10005 i.e., 1 quadrillion Kibi-, mebi-, gibi-, tebi-, pebi-:these prefixes denote aggregations in systems of 1024. Since computing supplies a binary system, the totals for units of warehouse are constantly in strength of 2. 1024 is 210. Kibi- is 10241 Mebi- is 10242 Gibi- is 10243 Tebi- is 10244 Pebi- is 10245

Applying this sample we can see that

Unit Base power Value
Kilobit (Kb or kb) 1000 1 1000 bits
Megabit (Mb) 1000 2 10002 bits; or 1000 kilobits
Gigabit (Gb) 1000 3 10003 bits; or 1000 megabits
Terabit (Tb) 1000 4 10004 bits; or 1000 gigabits
Kilobyte (KB or kB) 1000 1 1000 bytes
Megabyte (MB) 1000 2 10002 bytes; or 1000 kilobytes
Gigabyte (GB) 1000 3 10003 bytes; or 1000 megabytes
Terabyte (TB) 1000 4 10004 bytes; or 1000 gigabytes
Kibibyte (KiB) 1024 1 1024 bytes
Mebibyte (MiB) 1024 2 10242 bytes; or 1024 kibibytes
Gibibyte (GiB) 1024 3 10243 bytes; or 1024 mebibytes
Tebibyte (TiB) 1024 4 10244 bytes; or 1024 gibibytes

Kbps vs. Mbps and Other Data rate Units

Data rate units are represented as info per second. Because that example, Kilobits per second uses the symbol kbps, kbit/s or kb/s; Kilobytes every second is created as kB/s and also Mbps represents Megabit per second.

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The notation complies with this convention:

usage lower-case b for bits and upper-case B for bytes. E.g. MB/s is megabyte per second and Mbps is megabit every second. K stands for kilo and may be used in top or reduced case. M stands for mega, G because that giga, T because that tera. Therefore 1 Gbps is 1 gigabit per second. These units are aggregated in multiples the 1000. Ki means kibi, therefore KiB/s is kibibytes per second while Kib/s or Kibit/s is kibibit every second. Likewise Mi represents Mebi, Gi for Gibi, and Ti because that Tebi. The units are aggregated in powers of 2, especially 210.SymbolNamebit per second
bit/sbit per second1
B/sbyte every second8
kbit/skilobit every second1,000
Kibit/skibibit per second1,024
kB/skilobyte every second8,000
KiB/skibibyte per second8,192
Mbit/smegabit every second1,000,000
Mibit/smebibit per second1,048,576
MB/smegabyte every second8,000,000
MiB/smebibyte every second8,388,608
Gbit/sgigabit per second1,000,000,000
Gibit/sgibibit per second1,073,741,824
GB/sgigabyte per second8,000,000,000
GiB/sgibibyte every second8,589,934,592
Tbit/sterabit every second1,000,000,000,000
Tibit/stebibit every second1,099,511,627,776
TB/sterabyte every second8,000,000,000,000
TiB/stebibyte per second8,796,093,022,208

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