Gigabytes to Gigabits
Type a value in either box to convert between gigabytes and gigabits. The factor is 8.
| Gigabytes | Gigabits |
|---|---|
| 1 GB | 8 Gb |
| 2 GB | 16 Gb |
| 3 GB | 24 Gb |
| 5 GB | 40 Gb |
| 10 GB | 80 Gb |
| 25 GB | 200 Gb |
| 50 GB | 400 Gb |
| 100 GB | 800 Gb |
How to use
- Enter a value in the Gigabytes field.
- The Gigabits figure appears immediately — no button to press.
- Typing in the Gigabits field converts back to Gigabytes the same way.
- Use the reference table for the values that come up most often.
Gigabytes to Gigabits formula
The factor from gigabytes to gigabits is 8.
Gb = GB × 8
Put another way, one gigabyte is exactly 8 gigabits.
Why this factor: the gigabyte and the gigabit are both defined against the byte, so dividing one definition by the other gives 8 directly. Both definitions are set out in full below.
To go the other way, divide by 8 — or use the Gigabits to Gigabytes converter, which is the same calculation reversed.
Worked example
Start with 4 GB. Multiply by 8 to get 32 Gb.
4 GB × 8 = 32 Gb
The converter above does this for any value you type, in either direction.
What is a gigabyte?
A gigabyte is one billion bytes — the everyday unit of storage and memory capacity.
Definition: Exactly 1,000,000,000 bytes under SI prefixes. The binary gibibyte (GiB) is 1,073,741,824 bytes.
Where it is used: Phone and laptop storage, RAM capacity, video file sizes, and cloud storage plans.
What is a gigabit?
A gigabit is one billion bits, the unit of modern high-speed networking.
Definition: Exactly 1,000,000,000 bits, so exactly 125,000,000 bytes.
Where it is used: Gigabit Ethernet, fiber broadband tiers, and data-centre interconnects.
Gigabytes vs Gigabits
The gigabyte and the gigabit belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many gigabits are in a gigabyte?
One gigabyte equals 8 gigabits.
What is the formula to convert gigabytes to gigabits?
Multiply the number of gigabytes by 8. To reverse it, divide by 8 instead.
How do I convert gigabits back to gigabytes?
Divide by 8, which is the same as multiplying by 0.125.
How many gigabits are in 10 gigabytes?
10 GB works out to 80 Gb.
How is the gigabyte defined?
Exactly 1,000,000,000 bytes under SI prefixes. The binary gibibyte (GiB) is 1,073,741,824 bytes.