Gigabits per second to megabits per second
Multiply gigabits per second by 1,000 to get megabits per second.
5 Gbps = 5,000 Mbps
Worked examples
1 Gbps is exactly 1,000 Mbps in the decimal SI convention: 1 Mbps = 10⁶ bit/s and 1 Gbps = 10⁹ bit/s. A “1 gigabit” Ethernet link is a 1,000 Mbps link on this scale.
A 2.5 Gbps multi-gig port is exactly 2,500 Mbps. That is the “2.5G” figure on many recent Ethernet adapters, not 2,048 Mbps and not 2.5 GB/s.
Gigabits per second to megabits per second table
| Gigabits per second | Megabits per second |
|---|---|
| 0.1 Gbps | 100 Mbps |
| 0.15 Gbps | 150 Mbps |
| 0.2 Gbps | 200 Mbps |
| 0.25 Gbps | 250 Mbps |
| 0.3 Gbps | 300 Mbps |
| 0.4 Gbps | 400 Mbps |
| 0.5 Gbps | 500 Mbps |
| 0.6 Gbps | 600 Mbps |
| 0.7 Gbps | 700 Mbps |
| 0.75 Gbps | 750 Mbps |
| 0.8 Gbps | 800 Mbps |
| 0.9 Gbps | 900 Mbps |
| 1 Gbps | 1,000 Mbps |
| 1.5 Gbps | 1,500 Mbps |
| 2 Gbps | 2,000 Mbps |
| 2.5 Gbps | 2,500 Mbps |
| 3 Gbps | 3,000 Mbps |
| 4 Gbps | 4,000 Mbps |
| 5 Gbps | 5,000 Mbps |
| 6 Gbps | 6,000 Mbps |
| 7 Gbps | 7,000 Mbps |
| 7.5 Gbps | 7,500 Mbps |
| 8 Gbps | 8,000 Mbps |
| 9 Gbps | 9,000 Mbps |
| 10 Gbps | 10,000 Mbps |
| 15 Gbps | 15,000 Mbps |
| 20 Gbps | 20,000 Mbps |
| 25 Gbps | 25,000 Mbps |
| 30 Gbps | 30,000 Mbps |
| 40 Gbps | 40,000 Mbps |
| 50 Gbps | 50,000 Mbps |
| 60 Gbps | 60,000 Mbps |
| 70 Gbps | 70,000 Mbps |
| 75 Gbps | 75,000 Mbps |
| 80 Gbps | 80,000 Mbps |
| 90 Gbps | 90,000 Mbps |
| 100 Gbps | 100,000 Mbps |
Reverse and related
About gigabits per second and megabits per second
A megabit per second is 10⁶ bit/s and a gigabit per second is 10⁹ bit/s, both decimal SI prefixes on the bit, so 1 Gbps = 1,000 Mbps exactly. A bit is not a byte (a byte is 8 bits). Binary prefixes such as Gibit/s are defined in IEC 80000-13 and are not used in this factor.
Where people use this
Broadband plans, switch ports, and ISP speed tests quote gigabit and megabit rates. A 500 Mbps plan is 0.5 Gbps; a 10 Gbps data-center link is 10,000 Mbps.
Throughput budgets that start from a 1 Gbps uplink and need a megabit-per-second graph use this exact 1,000-to-1 decimal factor.
Common mistakes
These are bits per second, not bytes per second. 1 Gbps is 1,000 Mbps, which is 125 MB/s of payload only in the ideal case of 8 bits to a byte and no protocol overhead. A “1 GB/s” claim is 8 Gbps, eight times a 1 Gbps link. Decimal prefixes apply: 1 Gbps = 10⁹ bit/s, not 2³⁰ bit/s (that would be 1 Gibit/s). GiB and GB are storage units, not rates; they belong on the storage pages, with the same decimal-versus-binary caution.
Both units are defined in IEC 80000-13 (quantities and units — information science); NIST on binary prefixes.
Sources
Questions people ask
How many Mbps is 1 Gbps?
Exactly 1,000 Mbps in the decimal SI convention used here.
How many Mbps is 2.5 Gbps?
Exactly 2,500 Mbps.
Is 1 Gbps the same as 1 GB/s?
No. 1 GB/s is 8 Gbps, because a byte is 8 bits. 1 Gbps is exactly 0.125 GB/s. Real-world throughput is lower because of protocol overhead.
Does this use GiB or 1,024-based units?
No. The factor is decimal: 10⁹ / 10⁶ = 1,000. GiB and GB are storage units, not bit rates, and this page does not convert them.
Is 1 Gbps equal to 1,024 Mbps?
No. That would be a binary (Gibit/s) convention. This page uses 1 Gbps = 1,000 Mbps.