Convert Gigabits to Gigabytes (Gbit to GB)
1 gigabit (Gbit) = 0.125 gigabytes (GB). 1 GB = 8 Gbit. Example: 15 Gbit = 15 × 0.125 = 1.875 GB.
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1 Gbit = 0.125 GB
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabit to gigabyte converter to paste a column from Excel.
How to Convert Gigabit to Gigabyte
- 1 Gbit = 0.125 GB
- 1 GB = 8 Gbit
- Example: convert 15 Gbit to GB: 15 Gbit = 15 × 0.125 GB = 1.875 GB
Formula
GB = Gbit ÷ 8
Derivation from SI units:
- 1 Gbit = 10⁹ bits.
- 1 GB = 10⁹ bytes = 8 × 10⁹ bits (decimal, SI).
- 1 Gbit = 1000000000 bit ÷ 8000000000 bit per GB = 0.125 GB
Both units are defined exactly, so the factor is exact. Gigabit definition: gigabit; Gigabyte definition: gigabyte.
Worked examples
- A reading of 16 Gbit converts to 2 GB.
16 Gbit × 0.125 = 2 GB - A value of 128 Gbit is 16 GB.
128 Gbit × 0.125 = 16 GB
Gigabit to Gigabyte conversion table
| Gigabits (Gbit) | Gigabytes (GB) |
|---|---|
| 1 Gbit | 0.125 GB |
| 2 Gbit | 0.25 GB |
| 4 Gbit | 0.5 GB |
| 8 Gbit | 1 GB |
| 16 Gbit | 2 GB |
| 32 Gbit | 4 GB |
| 64 Gbit | 8 GB |
| 100 Gbit | 12.5 GB |
| 128 Gbit | 16 GB |
| 256 Gbit | 32 GB |
| 500 Gbit | 62.5 GB |
| 1000 Gbit | 125 GB |
Where it's used
Gigabits are used for DRAM and NAND flash chip densities, while gigabytes appear in phone and laptop storage. Both measure amount of digital information, so the conversion is a fixed factor.
Gigabit to other data storage units
| Conversion | 1 Gbit equals |
|---|---|
| gigabit to gigabyte | 0.125 GB |
| gigabit to byte | 125000000 B |
| gigabit to kilobyte | 125000 kB |
| gigabit to megabyte | 125 MB |
| gigabit to terabyte | 0.000125 TB |
| gigabit to bit | 1000000000 bit |
| gigabit to megabit | 1000 Mbit |
| gigabit to kibibyte | 122070.3125 KiB |
Show 5 more units
| gigabit to mebibyte | 119.2092896 MiB |
|---|---|
| gigabit to gibibyte | 0.1164153218 GiB |
| gigabit to kilobit | 1000000 kbit |
| gigabit to petabyte | 1.25 × 10⁻⁷ PB |
| gigabit to tebibyte | 0.0001136868377 TiB |
Frequently asked questions
How many gigabytes are in 1 gigabit?
1 Gbit = 0.125 GB.
How do I convert gigabits to gigabytes?
Multiply the value in Gbit by 0.125, or divide it by 8. For example, 15 Gbit × 0.125 = 1.875 GB.
Is the Gbit to GB conversion exact?
Yes. Both units are defined exactly, and 1 Gbit is exactly 0.125 GB.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gigabits to Gigabytes (Gbit to GB). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/gigabits-to-gigabytes/
IEEE
Scientific Converters, "Convert Gigabits to Gigabytes (Gbit to GB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/gigabits-to-gigabytes/