Gigabits per Second to Megabits per Second (Gbps to Mbps)
1 gigabit per second (Gbps) = 1000 megabits per second (Mbps). 1 Mbps = 0.001 Gbps. Example: 1 Gbps = 1 × 1000 = 1000 Mbps.
Also searched as Gbps to Mbps, gigabit to megabit, 1 gbps in mbps and gig to mbps.
1 Gbps = 1000 Mbps
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabit per second to megabit per second converter to paste a column from Excel.
How to Convert Gigabit per Second to Megabit per Second
- 1 Gbps = 1000 Mbps
- 1 Mbps = 0.001 Gbps
- Example: convert 1 Gbps to Mbps: 1 Gbps = 1 × 1000 Mbps = 1000 Mbps
Formula
Mbps = Gbps × 1000
Derivation from SI units:
- 1 Gbit/s = 10⁹ bit/s.
- 1 Mbit/s = 10⁶ bit/s.
- 1 Gbps = 1000000000 bps ÷ 1000000 bps per Mbps = 1000 Mbps
Both units are defined exactly, so the factor is exact. Gigabit per Second definition: gigabit per second; Megabit per Second definition: megabit per second.
Worked examples
- A 1 Gbps Ethernet port is 1000 Mbps.
1 Gbps × 1000 = 1000 Mbps - A 2.5 Gbps fibre plan is 2500 Mbps.
2.5 Gbps × 1000 = 2500 Mbps
Gigabit per Second to Megabit per Second conversion table
| Gigabits per Second (Gbps) | Megabits per Second (Mbps) |
|---|---|
| 1 Gbps | 1000 Mbps |
| 2.5 Gbps | 2500 Mbps |
| 5 Gbps | 5000 Mbps |
| 10 Gbps | 10000 Mbps |
| 25 Gbps | 25000 Mbps |
| 40 Gbps | 40000 Mbps |
| 100 Gbps | 100000 Mbps |
| 400 Gbps | 400000 Mbps |
Where it's used
Link speeds in gigabits per second from Ethernet, fibre and Wi-Fi specs are converted to megabits per second to compare with plans and speed tests. Multiply by 1000.
Gigabit per Second to other data transfer rate units
| Conversion | 1 Gbps equals |
|---|---|
| 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 |
| 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 Mbps is 1 Gbps?
Exactly 1000 Mbps; networking always uses decimal prefixes.
How many megabits per second are in 1 gigabit per second?
1 Gbps = 1000 Mbps.
How do I convert gigabits per second to megabits per second?
Multiply the value in Gbps by 1000. For example, 1 Gbps × 1000 = 1000 Mbps.
Is the Gbps to Mbps conversion exact?
Yes. Both units are defined exactly, and 1 Gbps is exactly 1000 Mbps.
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 Megabits per Second (Gbps to Mbps). Retrieved October 25, 2026, from https://scientificconverters.com/data-rate/gigabits-per-second-to-megabits-per-second/
IEEE
Scientific Converters, "Gigabits per Second to Megabits per Second (Gbps to Mbps)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-rate/gigabits-per-second-to-megabits-per-second/