Gigabits (Gb) to Gigabytes (GB) Converter
Enter your Gigabits (Gb) value to convert to Gigabytes (GB). 1 Gb = 0.125 GB, calculated across both decimal (SI) and binary (IEC) standards.
Convert Gigabits to Gigabytes
Do you want to convert gigabytes to gigabits?
How to Convert Gigabits to Gigabytes
To convert gigabits to gigabytes, divide by 8 then adjust for scale. Since 1 byte = 8 bits, this conversion translates bit-based measurements to the byte-based units used for storage capacity. Check out our Gigabytes to Gigabits calculator.
Gb measures data in bits—commonly used for memory addressing and low-level data specifications. You might also need: convert Gigabits to Gibibits.
GB measures data in bytes—the standard unit for file sizes, storage capacity, and what you see in file explorers. You might also need: Pebibits to Gigabytes conversion.
1 Gb = 0.125 GB (using SI decimal standard) — or equivalently, 1 GB = 8Gb.
Gb to GB Conversion Formula
// Convert Gb to GB
GB = Gb × 0.125
// Reverse: Convert GB to Gb
Gb = GB × 8
Gb to GB Conversion Examples
100 Gb = 12.5 GB
256 Gb = 32 GB
500 Gb = 62.5 GB
1,000 Gb = 125 GB
2,048 Gb = 256 GB
What Is a Gigabit?
A gigabit is 1,000 megabits or 1,000,000,000 bits. Used for high-speed network connections. Use our PiB to Mebibytes converter.
The gigabit is a SI decimal bit unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Check out our Megabytes Per Second to KiB/s calculator.
Common uses: Fiber internet speeds, enterprise networking, 10GbE connections You might also need: convert Gb to Tebibytes.
1 Gb = 1 × 10⁹ bits = 125 × 10⁶ bytes.
The gigabit can be abbreviated as Gb; for example, 1 gigabit can be written as 1 Gb.
What Is a Gigabyte?
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use. Check out our Pebibytes to GB.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Try the how many EiB in Zebibits.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans Learn more: how many Kilobits Per Second in a Tibps.
1 GB = 8 × 10⁹ bits = 1 × 10⁹ bytes.
The gigabyte can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.
Gigabit to Gigabyte Conversion Table
The table below shows various gigabit measurements converted to gigabytes.
| Gigabits | Gigabytes |
|---|---|
| 1 Gb | 0.125 GB |
| 2 Gb | 0.25 GB |
| 5 Gb | 0.625 GB |
| 10 Gb | 1.25 GB |
| 25 Gb | 3.125 GB |
| 50 Gb | 6.25 GB |
| 100 Gb | 12.5 GB |
| 250 Gb | 31.25 GB |
| 500 Gb | 62.5 GB |
| 1,000 Gb | 125 GB |
💡 Storage Engineer Tip
Remember: 8 bits = 1 byte. When your ISP advertises "100 Mbps," divide by 8 to get your actual download speed in MB/s (approximately 12.5 MB/s theoretical maximum).
— Subash Geetha Krishnan, 15+ years in enterprise storage
When to Convert Gb to GB
Common scenario: Converting your internet speed (Mbps) to actual download rate in MB/s, or calculating real-world transfer capabilities. Try the calculate Gb to Tib.
Other situations include storage planning for calculating how much data fits in a given capacity, file management for understanding sizes across different scales, cost estimation for budgeting cloud storage, and backup planning for determining media requirements. You might also need: Pb → GB.