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
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