Gigabits per Second to Terabits per Second (Gbps to Tbps)
1 gigabit per second (Gbps) = 0.001 terabits per second (Tbps). 1 Tbps = 1000 Gbps. Example: 15 Gbps = 15 × 0.001 = 0.015 Tbps.
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1 Gbps = 0.001 Tbps
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabit per second to terabit per second converter to paste a column from Excel.
How to Convert Gigabit per Second to Terabit per Second
- 1 Gbps = 0.001 Tbps
- 1 Tbps = 1000 Gbps
- Example: convert 15 Gbps to Tbps: 15 Gbps = 15 × 0.001 Tbps = 0.015 Tbps
Formula
Tbps = Gbps ÷ 1000
Derivation from SI units:
- 1 Gbit/s = 10⁹ bit/s.
- 1 Tbit/s = 10¹² bit/s.
- 1 Gbps = 1000000000 bps ÷ 1000000000000 bps per Tbps = 0.001 Tbps
Both units are defined exactly, so the factor is exact. Gigabit per Second definition: gigabit per second; Terabit per Second definition: terabit per second.
Worked examples
- A reading of 5 Gbps converts to 0.005 Tbps.
5 Gbps × 0.001 = 0.005 Tbps - A value of 40 Gbps is 0.04 Tbps.
40 Gbps × 0.001 = 0.04 Tbps
Gigabit per Second to Terabit per Second conversion table
| Gigabits per Second (Gbps) | Terabits per Second (Tbps) |
|---|---|
| 1 Gbps | 0.001 Tbps |
| 2.5 Gbps | 0.0025 Tbps |
| 5 Gbps | 0.005 Tbps |
| 10 Gbps | 0.01 Tbps |
| 25 Gbps | 0.025 Tbps |
| 40 Gbps | 0.04 Tbps |
| 100 Gbps | 0.1 Tbps |
| 400 Gbps | 0.4 Tbps |
Where it's used
Gigabits per Second are used for ethernet and fibre links, while terabits per second appear in undersea fibre cables. 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 terabit per second | 0.001 Tbps |
| 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 gigabyte per second | 0.125 GB/s |
| 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 |
Show 2 more units
| gigabit per second to mebibyte per second | 119.2092896 MiB/s |
|---|---|
| gigabit per second to kibibyte per second | 122070.3125 KiB/s |
Frequently asked questions
How many terabits per second are in 1 gigabit per second?
1 Gbps = 0.001 Tbps.
How do I convert gigabits per second to terabits per second?
Multiply the value in Gbps by 0.001, or divide it by 1000. For example, 15 Gbps × 0.001 = 0.015 Tbps.
Is the Gbps to Tbps conversion exact?
Yes. Both units are defined exactly, and 1 Gbps is exactly 0.001 Tbps.
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 Terabits per Second (Gbps to Tbps). Retrieved October 25, 2026, from https://scientificconverters.com/data-rate/gigabits-per-second-to-terabits-per-second/
IEEE
Scientific Converters, "Gigabits per Second to Terabits per Second (Gbps to Tbps)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-rate/gigabits-per-second-to-terabits-per-second/