# Gigabits Conversion (Gbit)

Gigabit is the unit of digital information with prefix giga (109).
1 gigabit is equal to 109 bits = 1,000,000,000 bits.

You can convert gigabit to other units of data on the following converters.

Guest 2020-07-08 01:40:47

SI (The International System of Units) defines the prefix "kilo" to mean one thousand. Therefore:

1000 bits = 1 Kilobit (1 Kb)
1000 Kilobits = 1 Megabit (1 Mb) = 1 000 000 bits = 10^6 bits
1000 Megabits = 1 Gigabit (1 Gb) = 1 000 000 000 bits = 10^9 bits

However, since computers use the binary system, a different measurement is sometimes used:
1024 bits = 1 Kibibit (1 Kib)
1024 Kibibits = 1 Mebibit (1 Mib) = 1 048 576 bits = 2^20 bits
1024 Mebibits = 1 Gibibit (1 Gib) = 1 073 741 824 bits = 2^30 bits

As you can see, the SI-based units (Kilo, Mega, Giga...) are based on powers of ten.
The binary-based units (Kibi, Mebi, Gibi...) are based on powers of two.

What may cause confusion: Hard drive manufacturers use the SI units to denote sizes, e.g. 1 GB = 1 billion B, but Windows displays disk and file sizes in binary-based units, but written as GB instead of GiB! This means a 1 TB disk (1000 GB) appears to be 931.51 GB (1000 GiB)

Sid 2020-01-16 10:27:53

Papacarlo, you're wrong. One gigabit is equal to 1,000,000,000 bits, you're talking about gibibit which is different.

Papacarlo 2019-11-15 19:01:40

This is wrong calculator. Use computer science and not a grocery store measurements. 1K=1024 so 1 gigabit = 1073741824 bits but not anyhow 1000000000 bits.