Gigabits to Bits
Convert gigabits to bits instantly — one gigabit is 1e+09 bits.
| Gigabits | Bits |
|---|---|
| 1 Gb | 1000000000 bit |
| 2 Gb | 2000000000 bit |
| 3 Gb | 3000000000 bit |
| 5 Gb | 5000000000 bit |
| 10 Gb | 10000000000 bit |
| 25 Gb | 25000000000 bit |
| 50 Gb | 50000000000 bit |
| 100 Gb | 100000000000 bit |
How to use
- Enter a value in the Gigabits field.
- The Bits figure appears immediately — no button to press.
- Typing in the Bits field converts back to Gigabits the same way.
- Use the reference table for the values that come up most often.
Gigabits to Bits formula
To convert gigabits to bits, multiply by 1e+09.
bit = Gb × 1e+09
Why this factor: the gigabit and the bit 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 Bits to Gigabits converter, which is the same calculation reversed.
Worked example
Given 64 Gb, multiplying by 1e+09 yields 64000000000 bit.
64 Gb × 1e+09 = 64000000000 bit
The converter above does this for any value you type, in either direction.
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.
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.
Gigabits vs Bits
The gigabit and the bit 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 bits are in a gigabit?
One gigabit equals 1e+09 bits.
What is the formula to convert gigabits to bits?
Multiply the number of gigabits by 1e+09. To reverse it, divide by 1e+09 instead.
How do I convert bits back to gigabits?
Divide by 1e+09, which is the same as multiplying by 1e-09.
How many bits are in 10 gigabits?
10 Gb works out to 10000000000 bit.
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 gigabit defined?
Exactly 1,000,000,000 bits, so exactly 125,000,000 bytes.