Gbps to Mbps converter (and Mbps to Gbps)
Multiply Gbps by 1,000 to get Mbps, and divide Mbps by 1,000 to get Gbps. A 2.5 Gbps plan is 2,500 Mbps, and a 940 Mbps speed test result is 0.94 Gbps.
Tip: paste a reading like “12.4 MB/s” and the unit is picked for you.
1 Gbps equals:
- bps1,000,000,000
- kbps1,000,000
- Mbps1,000
- Gbps1
- B/s125,000,000
- kB/s125,000
- MB/s125
- GB/s0.125
- MiB/s119.20929
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Formula
1 Gbps = 1,000,000,000 bits and 1 Mbps = 1,000,000 bits, so:
Common conversions
Gbps → Mbps
| Gbps | Mbps |
|---|---|
| 0.1 Gbps | 100 Mbps |
| 0.5 Gbps | 500 Mbps |
| 1 Gbps | 1,000 Mbps |
| 1.2 Gbps | 1,200 Mbps |
| 2 Gbps | 2,000 Mbps |
| 2.5 Gbps | 2,500 Mbps |
| 5 Gbps | 5,000 Mbps |
| 8 Gbps | 8,000 Mbps |
| 10 Gbps | 10,000 Mbps |
Mbps → Gbps
| Mbps | Gbps |
|---|---|
| 100 Mbps | 0.1 Gbps |
| 300 Mbps | 0.3 Gbps |
| 500 Mbps | 0.5 Gbps |
| 940 Mbps | 0.94 Gbps |
| 1,000 Mbps | 1 Gbps |
| 2,000 Mbps | 2 Gbps |
| 2,500 Mbps | 2.5 Gbps |
| 5,000 Mbps | 5 Gbps |
| 10,000 Mbps | 10 Gbps |
Why a 1 Gbps plan tests at about 940 Mbps
A speed test on a wired gigabit connection typically peaks around 940 Mbps, or 0.94 Gbps. The line is running at 1 Gbps; the difference is packet overhead. With standard 1,500-byte packets and TCP timestamps, each packet carries 1,448 bytes of data out of 1,538 bytes on the wire, and 1,000 × 1,448 ÷ 1,538 ≈ 941 Mbps. A result in the 900s is a full-speed gigabit connection, not a shortfall.
1 Gbps in MB/s
Download windows count bytes, so a Gbps figure needs a second step: divide by 8. 1 Gbps is 125 MB/s at most, and the 940 Mbps you see in practice is about 117.5 MB/s. A 2.5 Gbps plan allows up to 312.5 MB/s. Gbps and GB/s are easy to mix up in a spec sheet; GB/s to Mbps handles byte-based storage and copy speeds.
Multi-gig plans and the port in the way
A plan above 1 Gbps only reaches a single device if every link on the way is faster than gigabit: the router port, the cable and the device's network adapter.
| Plan | Port needed for full speed on one device | One device on a Gigabit Ethernet port |
|---|---|---|
| 1.2 Gbps | 2.5GBASE-T or faster | about 940 Mbps |
| 2 Gbps | 2.5GBASE-T or faster | about 940 Mbps |
| 2.5 Gbps | 2.5GBASE-T (tests land a little under 2.5 Gbps) | about 940 Mbps |
| 5 Gbps and 8 Gbps | 10GBASE-T or similar | about 940 Mbps |
| 10 Gbps | 10GBASE-T or similar | about 940 Mbps |
On gigabit ports the extra capacity still helps when several devices download at once, since the plan is shared. Wi-Fi is usually a tighter limit than any port: a phone or laptop often gets well under 1 Gbps even in the same room as the router, so check wired first. Is gigabit worth it? looks at who benefits, and the file transfer time calculator has presets for 2.5 GbE and 10 GbE.
Comparing offers across scales
Keeping everything in Mbps makes offers and needs comparable. The FCC's 2024 broadband benchmark is 100 Mbps down and 20 Mbps up, which is 0.1 Gbps down. An 8 Gbps plan is 8,000 Mbps, enough for 400 simultaneous 4K streams at YouTube's 20 Mbps each, far beyond what a home runs at once; what can my speed handle checks any tier against a real household.
Monthly volume is a different scale again: a 1.2 TB data cap spread over an average month is only about 3.65 Mbps of sustained traffic, which TB per month to Mbps works out for any allowance. For byte-based rates from B/s to GB/s, the bytes to Mbps converter shows every unit at once.
Frequently asked questions
How many Mbps is 1 Gbps?
1 Gbps is 1,000 Mbps. Network prefixes are decimal, so multiply Gbps by 1,000.
How many Gbps is 1,000 Mbps?
1,000 Mbps is exactly 1 Gbps. Divide Mbps by 1,000 to get Gbps.
Why does my 1 Gbps plan only test at 940 Mbps?
Headers take part of each packet. With 1,500-byte packets, 1,448 bytes of each 1,538 on the wire are data, so the maximum payload rate is about 941 Mbps, or 0.94 Gbps. That result means the connection is working at full speed.
Can one computer use a 2 Gbps plan?
Only if its network adapter, cable and router port are all faster than gigabit, for example 2.5 GbE. On a 1 Gbps port it is limited to about 0.94 Gbps.
Is 1 Gbps the same as 1 GB/s?
No. 1 Gbps is 1,000 Mbps, which is 125 MB/s. 1 GB/s is eight times more: 8,000 Mbps.