Bits to Gigabytes
An instant bits-to-gigabytes converter, with the formula and a reference table below.
| Bits | Gigabytes |
|---|---|
| 1 bit | 1.25e-10 GB |
| 2 bit | 2.5e-10 GB |
| 3 bit | 3.75e-10 GB |
| 5 bit | 6.25e-10 GB |
| 10 bit | 1.25e-09 GB |
| 25 bit | 3.125e-09 GB |
| 50 bit | 6.25e-09 GB |
| 100 bit | 1.25e-08 GB |
How to use
- Enter a value in the Bits field.
- The Gigabytes figure appears immediately — no button to press.
- Typing in the Gigabytes field converts back to Bits the same way.
- Use the reference table for the values that come up most often.
Bits to Gigabytes formula
Converting bits to gigabytes is a single multiplication by 1.25e-10.
GB = bit × 1.25e-10
Why this factor: the bit and the gigabyte are both defined against the byte, so dividing one definition by the other gives 1.25e-10 directly. Both definitions are set out in full below.
To go the other way, divide by 1.25e-10 — or use the Gigabytes to Bits converter, which is the same calculation reversed.
Worked example
Start with 500 bit. Multiply by 1.25e-10 to get 6.25e-08 GB.
500 bit × 1.25e-10 = 6.25e-08 GB
The converter above does this for any value you type, in either direction.
What is a bit?
A bit is the smallest unit of digital information — a single binary digit, either 0 or 1.
Definition: One eighth of a byte. The name is a contraction of 'binary digit'.
Where it is used: Network and connection speeds, which are always quoted in bits per second.
Worth knowing: Lowercase 'b' is bits, uppercase 'B' is bytes. A 100 Mb/s connection delivers about 12.5 MB/s.
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.
Bits vs Gigabytes
The bit and the gigabyte 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 gigabytes are in a bit?
One bit equals 1.25e-10 gigabytes.
What is the formula to convert bits to gigabytes?
Multiply the number of bits by 1.25e-10. To reverse it, divide by 1.25e-10 instead.
How do I convert gigabytes back to bits?
Divide by 1.25e-10, which is the same as multiplying by 8e+09.
How many gigabytes are in 10 bits?
10 bit works out to 1.25e-09 GB.
Is there anything to watch out for with bits?
Lowercase 'b' is bits, uppercase 'B' is bytes. A 100 Mb/s connection delivers about 12.5 MB/s.
How is the bit defined?
One eighth of a byte. The name is a contraction of 'binary digit'.