Bits to Gigabits
An instant bits-to-gigabits converter, with the formula and a reference table below.
| Bits | Gigabits |
|---|---|
| 1 bit | 1e-09 Gb |
| 2 bit | 2e-09 Gb |
| 3 bit | 3e-09 Gb |
| 5 bit | 5e-09 Gb |
| 10 bit | 1e-08 Gb |
| 25 bit | 2.5e-08 Gb |
| 50 bit | 5e-08 Gb |
| 100 bit | 1e-07 Gb |
How to use
- Enter a value in the Bits field.
- The Gigabits figure appears immediately — no button to press.
- Typing in the Gigabits field converts back to Bits the same way.
- Use the reference table for the values that come up most often.
Bits to Gigabits formula
To convert bits to gigabits, multiply by 1e-09.
Gb = bit × 1e-09
Why this factor: the bit and the gigabit are both defined against the byte, so dividing one definition by the other gives 1e-09 directly. Both definitions are set out in full below.
To go the other way, divide by 1e-09 — or use the Gigabits to Bits converter, which is the same calculation reversed.
Worked example
Take 500 bit and multiply by the factor 1e-09: the result is 5e-07 Gb.
500 bit × 1e-09 = 5e-07 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 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.
Bits vs Gigabits
The bit 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 bit?
One bit equals 1e-09 gigabits.
What is the formula to convert bits to gigabits?
Multiply the number of bits by 1e-09. To reverse it, divide by 1e-09 instead.
How do I convert gigabits back to bits?
Divide by 1e-09, which is the same as multiplying by 1e+09.
How many gigabits are in 10 bits?
10 bit works out to 1e-08 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'.