Gigabits to Bits Converter
Enter the data size in gigabits below to convert it to bits.
Convert Gigabits to Bits
Enter a value in gigabits (Gb) to convert to bits (b).
Gigabit to Bit Conversion Table
Table showing various gigabit measurements converted to bits. Click any preset value or arrow to load it into the converter.
How to Convert Gigabits to Bits
To convert gigabits to bits, multiply the data size by the following conversion ratio: 1,000,000,000 bits/gigabit.
Since one gigabit is equal to 1,000,000,000 bits, you can use this simple formula to convert:
The data size in bits is equal to the data size in gigabits multiplied by 1,000,000,000.
For example, here's how to convert 5 gigabits to bits using the formula above.
How Many Bits Are in a Gigabit?
There are 1,000,000,000 bits in a gigabit, which is why we use this value in the formula above.
Our gigabit to bit calculator automatically converts your data size measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigabits and bits are both units used to measure data size. Keep reading to learn more about each unit.
What Is a Gigabit?
A gigabit is a unit of data size equal to 125,000,000 bytes (B), the base unit for data size. Equal to 1,000,000,000 bits (125 MB). [1]
The gigabit is classified as a metric and SI-compatible unit of data size. Gigabits can be abbreviated as Gb; for example, 1 gigabit can be written as 1 Gb.
In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigabit (Gb) a convenient decimal multiple of the byte (B).
In practice, gigabits (Gb) are widely used across large-scale industrial, bulk, and macro-level data size specifications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Bit?
A bit is a unit of data size equal to 1/8 of a byte (0.125 B). Basic binary digit (1/8 of a byte). [2]
The bit is classified as an IEC binary unit of data size. Bits can be abbreviated as b; for example, 1 bit can be written as 1 b.
When working with bits (b) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, bits (b) are widely used across standard data size applications within IEC binary workflows, engineering documentation, and technical data sheets.
When converting data size between gigabits (Gb) and bits (b), keep full floating-point precision (1 Gb = 1,000,000,000 b; 1 b = 1e-9 Gb) during intermediate calculations and round only the final bit figure to match your instrument tolerance.
More Gigabit & Bit Conversions
Need to calculate in the opposite direction? Use our bits to gigabits calculator to switch your starting unit immediately. You can also explore related tools such as converting bits to gigabits, converting megabytes to gigabytes, or converting gigabytes to terabytes.
Frequently Asked Questions
References
- [1]NIST / IEC StandardNIST / IEC (IEC 80000-13 Binary Prefixes)·Digital Storage Metrology Standard — Gigabits (Gb) to Bits (b)
- [2]BIPM SpecificationBIPM (SI Decimal Prefixes (k, M, G, T, P))·Unit Specifications: Gigabit (Gb) & Bit (b)
- [3]NIST CUU ReferenceNIST CUU (SI Prefixes & Decimal Multiples)·Conversion Factors & Mathematical Basis (Gb to b)