Gigabits per Second to Gigabytes per Second (Gbps to GB/s)
1 gigabit per second (Gbps) = 0.125 gigabytes per second (GB/s). 1 GB/s = 8 Gbps. Example: 15 Gbps = 15 × 0.125 = 1.875 GB/s.
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1 Gbps = 0.125 GB/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabit per second to gigabyte per second converter to paste a column from Excel.
How to Convert Gigabit per Second to Gigabyte per Second
- 1 Gbps = 0.125 GB/s
- 1 GB/s = 8 Gbps
- Example: convert 15 Gbps to GB/s: 15 Gbps = 15 × 0.125 GB/s = 1.875 GB/s
Formula
GB/s = Gbps ÷ 8
Derivation from SI units:
- 1 Gbit/s = 10⁹ bit/s.
- 1 GB/s = 10⁹ B/s = 8 Gbit/s.
- 1 Gbps = 1000000000 bps ÷ 8000000000 bps per GB/s = 0.125 GB/s
Both units are defined exactly, so the factor is exact. Gigabit per Second definition: gigabit per second; Gigabyte per Second definition: gigabyte per second.
Worked examples
- A reading of 5 Gbps converts to 0.625 GB/s.
5 Gbps × 0.125 = 0.625 GB/s - A value of 40 Gbps is 5 GB/s.
40 Gbps × 0.125 = 5 GB/s
Gigabit per Second to Gigabyte per Second conversion table
| Gigabits per Second (Gbps) | Gigabytes per Second (GB/s) |
|---|---|
| 1 Gbps | 0.125 GB/s |
| 2.5 Gbps | 0.3125 GB/s |
| 5 Gbps | 0.625 GB/s |
| 10 Gbps | 1.25 GB/s |
| 25 Gbps | 3.125 GB/s |
| 40 Gbps | 5 GB/s |
| 100 Gbps | 12.5 GB/s |
| 400 Gbps | 50 GB/s |
Where it's used
Gigabits per Second are used for ethernet and fibre links, while gigabytes per second appear in NVMe SSD speeds. Both measure data transfer rate (bandwidth), so the conversion is a fixed factor.
Gigabit per Second to other data transfer rate units
| Conversion | 1 Gbps equals |
|---|---|
| gigabit per second to gigabyte per second | 0.125 GB/s |
| gigabit per second to megabit per second | 1000 Mbps |
| gigabit per second to megabyte per second | 125 MB/s |
| gigabit per second to kilobit per second | 1000000 kbps |
| gigabit per second to bit per second | 1000000000 bps |
| gigabit per second to byte per second | 125000000 B/s |
| gigabit per second to kilobyte per second | 125000 kB/s |
| gigabit per second to mebibyte per second | 119.2092896 MiB/s |
Show 2 more units
| gigabit per second to terabit per second | 0.001 Tbps |
|---|---|
| gigabit per second to kibibyte per second | 122070.3125 KiB/s |
Frequently asked questions
How many gigabytes per second are in 1 gigabit per second?
1 Gbps = 0.125 GB/s.
How do I convert gigabits per second to gigabytes per second?
Multiply the value in Gbps by 0.125, or divide it by 8. For example, 15 Gbps × 0.125 = 1.875 GB/s.
Is the Gbps to GB/s conversion exact?
Yes. Both units are defined exactly, and 1 Gbps is exactly 0.125 GB/s.
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). Gigabits per Second to Gigabytes per Second (Gbps to GB/s). Retrieved October 25, 2026, from https://scientificconverters.com/data-rate/gigabits-per-second-to-gigabytes-per-second/
IEEE
Scientific Converters, "Gigabits per Second to Gigabytes per Second (Gbps to GB/s)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-rate/gigabits-per-second-to-gigabytes-per-second/