In 1 bits there are 1.25000e-10 gigabytes. Meanwhile in 1 gigabytes there are 8,000,000,000 bits. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Gigabytes to Bits calculator above to convert any number.
* Values rounded to 6 decimal places for readability
A bit (b) is the smallest unit of digital data. It holds a single 0 or 1. A gigabyte (GB) is a much larger unit used for file sizes and storage.
To convert bits to gigabytes, use this rule:
This works because 1 byte = 8 bits and 1 gigabyte (decimal) = 1,000,000,000 bytes.
Quick conversion factor (bits to GB):
Example:
Tip: If you see Gb (gigabits) instead of GB (gigabytes), don’t mix them up. 8 bits = 1 byte, so 8 Gb = 1 GB.
A gigabyte is a unit of data size, while a bit is the smallest unit of data. The number of bits in a gigabyte depends on the GB standard you use:
In most storage and network contexts, people say “GB” but may mean different standards.
Use one of these formulas, based on the standard you need:
Pick the one that matches your device, app, or spec sheet.
GB (gigabyte) is often used as a decimal unit: 1 GB = 1,000,000,000 bytes.
GiB (gibibyte) is a binary unit: 1 GiB = 1,073,741,824 bytes.
That gap adds up at larger sizes. Many operating systems show sizes closer to GiB, even if they label it as GB.
A bit is one binary value (0 or 1). A byte is 8 bits. Most file sizes use bytes, while many internet speeds use bits. This mismatch causes a lot of confusion.
A quick anchor point helps:
You can do it in two steps:
This method is useful when your source data is in bits.
Using decimal gigabytes:
So 1 billion bits = 0.125 GB (about 125 MB in decimal units).
Using decimal gigabytes:
So 8 billion bits = 1 GB (decimal).
If you use decimal units (common in networking and storage marketing):
If you use binary units:
Check whether your data plan, router, or report uses GB or GiB.
No. It depends on the standard:
Storage makers often use decimal GB. Many operating systems report sizes closer to GiB.
Internet speeds are often shown in bits per second (bps, Mbps, Gbps). File sizes are often shown in bytes (KB, MB, GB). Since 1 byte = 8 bits, a speed in Mbps will look bigger than the same rate in MB/s.
A common rule:
Convert bits per second to gigabytes per second:
Example (decimal):
1 Gbps = 1,000,000,000 bps, so 1 Gbps = 0.125 GB/s.
Yes, it matters a lot:
Since 1 GB = 8 Gb, mixing them up can change results by 8 times.
Stick to a clear checklist:
The Calculate Box tool to convert bits to gigabytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a bits value in the box and have it instantly converted to gigabytes.