How to convert gigabytes to gigabits
To convert gigabytes (GB) to gigabits (Gb), multiply the value in gigabytes by 8.
Gb = GB × 8 (decimal)
Gb = GB × 8.589934592 (binary)
Example: 5 GB = 40 Gb, or 42.94967296 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.
Gigabytes to Gigabits conversion table
| Gigabytes | Gigabits (decimal) | Gigabits (binary) |
|---|---|---|
| 0.01 GB | 0.08 Gb | 0.085899346 Gb |
| 0.1 GB | 0.8 Gb | 0.85899346 Gb |
| 0.25 GB | 2 Gb | 2.1474836 Gb |
| 0.5 GB | 4 Gb | 4.2949673 Gb |
| 1 GB | 8 Gb | 8.5899346 Gb |
| 2 GB | 16 Gb | 17.179869 Gb |
| 3 GB | 24 Gb | 25.769804 Gb |
| 4 GB | 32 Gb | 34.359738 Gb |
| 5 GB | 40 Gb | 42.949673 Gb |
| 6 GB | 48 Gb | 51.539608 Gb |
| 7 GB | 56 Gb | 60.129542 Gb |
| 8 GB | 64 Gb | 68.719477 Gb |
| 9 GB | 72 Gb | 77.309411 Gb |
| 10 GB | 80 Gb | 85.899346 Gb |
| 12 GB | 96 Gb | 103.07922 Gb |
| 15 GB | 120 Gb | 128.84902 Gb |
| 20 GB | 160 Gb | 171.79869 Gb |
| 25 GB | 200 Gb | 214.74836 Gb |
| 30 GB | 240 Gb | 257.69804 Gb |
| 40 GB | 320 Gb | 343.59738 Gb |
| 50 GB | 400 Gb | 429.49673 Gb |
| 60 GB | 480 Gb | 515.39608 Gb |
| 75 GB | 600 Gb | 644.24509 Gb |
| 100 GB | 800 Gb | 858.99346 Gb |
| 250 GB | 2,000 Gb | 2,147.4836 Gb |
| 500 GB | 4,000 Gb | 4,294.9673 Gb |
| 1,000 GB | 8,000 Gb | 8,589.9346 Gb |
Converting gigabits back to gigabytes
1 Gb = 0.125 GB. See the Gigabits to Gigabytes converter, or press the swap button above.
About the units
Gigabyte (GB)
In decimal mode 1,000,000,000 bytes (1,000 MB); in binary mode 1,073,741,824 bytes (1,024 MB).
Gigabit (Gb)
A unit of file size.
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 gigabits are in a gigabyte?
One gigabyte (GB) equals 8 gigabits in decimal (SI) counting, or 8.589934592 gigabits in binary counting (1 KB = 1,024 B), which Windows uses.
How do I convert gigabytes to gigabits?
To convert gigabytes to gigabits, multiply the value in gigabytes by 8. The formula is Gb = GB × 8. For example, 5 GB = 40 Gb.
What is 5 GB in Gb?
5 gigabytes is 40 gigabits.
Which is bigger, a gigabyte or a gigabit?
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.