How to convert gigabits to gigabytes
To convert gigabits (Gb) to gigabytes (GB), multiply the value in gigabits by 0.125.
GB = Gb × 0.125 (decimal)
GB = Gb × 0.116415321827 (binary)
Example: 5 Gb = 0.625 GB, or 0.5820766091 GB in binary.
Decimal (SI) counting steps by 1,000 and is what drive makers, macOS and phones use. Binary counting steps by 1,024 and is what Windows and RAM use; its unambiguous IEC names are KiB, MiB and GiB. Bits are decimal either way.
You can also type 5 Gb to GB into the smart calculator, or mix units: 1 Gb + 1 GB.
Gigabits to Gigabytes conversion table
| Gigabits | Gigabytes (decimal) | Gigabytes (binary) |
|---|---|---|
| 0.01 Gb | 0.00125 GB | 0.0011641532 GB |
| 0.1 Gb | 0.0125 GB | 0.011641532 GB |
| 0.25 Gb | 0.03125 GB | 0.02910383 GB |
| 0.5 Gb | 0.0625 GB | 0.058207661 GB |
| 1 Gb | 0.125 GB | 0.11641532 GB |
| 2 Gb | 0.25 GB | 0.23283064 GB |
| 3 Gb | 0.375 GB | 0.34924597 GB |
| 4 Gb | 0.5 GB | 0.46566129 GB |
| 5 Gb | 0.625 GB | 0.58207661 GB |
| 6 Gb | 0.75 GB | 0.69849193 GB |
| 7 Gb | 0.875 GB | 0.81490725 GB |
| 8 Gb | 1 GB | 0.93132257 GB |
| 9 Gb | 1.125 GB | 1.0477379 GB |
| 10 Gb | 1.25 GB | 1.1641532 GB |
| 12 Gb | 1.5 GB | 1.3969839 GB |
| 15 Gb | 1.875 GB | 1.7462298 GB |
| 20 Gb | 2.5 GB | 2.3283064 GB |
| 25 Gb | 3.125 GB | 2.910383 GB |
| 30 Gb | 3.75 GB | 3.4924597 GB |
| 40 Gb | 5 GB | 4.6566129 GB |
| 50 Gb | 6.25 GB | 5.8207661 GB |
| 60 Gb | 7.5 GB | 6.9849193 GB |
| 75 Gb | 9.375 GB | 8.7311491 GB |
| 100 Gb | 12.5 GB | 11.641532 GB |
| 250 Gb | 31.25 GB | 29.10383 GB |
| 500 Gb | 62.5 GB | 58.207661 GB |
| 1,000 Gb | 125 GB | 116.41532 GB |
Converting gigabytes back to gigabits
1 GB = 8 Gb. See the Gigabytes to Gigabits converter, or press the swap button above.
About the units
Gigabit (Gb)
A unit of file size.
Gigabyte (GB)
In decimal mode 1,000,000,000 bytes (1,000 MB); in binary mode 1,073,741,824 bytes (1,024 MB).
Digital storage is counted in bits and bytes (1 byte = 8 bits). There are two ways to count bytes. Decimal (SI) prefixes step by 1,000: 1 KB = 1,000 B and 1 GB = 1,000 MB, which is how drive makers, macOS, iOS and Android report sizes. Binary prefixes step by 1,024: 1 KB = 1,024 B and 1 GB = 1,024 MB, which is how Windows and RAM count (the IEC names for these are KiB, MiB and GiB). Bits are always decimal: 1 Kb = 1,000 b.
Questions and answers
How many gigabytes are in a gigabit?
One gigabit (Gb) equals 0.125 gigabytes in decimal (SI) counting, or 0.1164153218 gigabytes in binary counting (1 KB = 1,024 B), which Windows uses.
How do I convert gigabits to gigabytes?
To convert gigabits to gigabytes, multiply the value in gigabits by 0.125. The formula is GB = Gb × 0.125. For example, 5 Gb = 0.625 GB.
What is 5 Gb in GB?
5 gigabits is 0.625 gigabytes.
Which is bigger, a gigabit or a gigabyte?
A gigabyte is bigger: 1 GB = 8 Gb.
Is 1 GB equal to 1,000 MB or 1,024 MB?
Both are in use. In decimal (SI) counting, which drive makers, macOS, iOS and Android use, 1 GB = 1,000 MB. In binary counting, which Windows and RAM use, 1 GB = 1,024 MB; the unambiguous IEC name for that size is the gibibyte (GiB). ConvertEasy has a Decimal / Binary switch so KB, MB, GB and TB follow whichever you need, while KiB, MiB and GiB are always binary.
Are kilobits 1,000 or 1,024 bits?
ConvertEasy treats bits as decimal in both modes: 1 Kb = 1,000 b, 1 Mb = 1,000 Kb. A byte is always 8 bits, so only byte units (KB, MB, GB…) change with the switch.
Does this Gb to GB converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.