GB/s to Mbps converter
To convert GB/s to Mbps, multiply by 8,000. One gigabyte per second is 8,000 Mbps (8 Gbps), which is more than a 2.5 Gbps or 5 Gbps link can carry.
Tip: paste a reading like “12.4 MB/s” and the unit is picked for you.
1 GB/s equals:
- bps8,000,000,000
- kbps8,000,000
- Mbps8,000
- Gbps8
- B/s1,000,000,000
- kB/s1,000,000
- MB/s1,000
- GB/s1
- MiB/s953.674316
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Formula
1 GB/s = 8,000,000,000 bits and 1 Mbps = 1,000,000 bits, so:
Common conversions
| GB/s | Mbps |
|---|---|
| 0.1 GB/s | 800 Mbps |
| 0.125 GB/s | 1,000 Mbps |
| 0.25 GB/s | 2,000 Mbps |
| 0.5 GB/s | 4,000 Mbps |
| 1 GB/s | 8,000 Mbps |
| 1.25 GB/s | 10,000 Mbps |
| 2 GB/s | 16,000 Mbps |
| 5 GB/s | 40,000 Mbps |
| 10 GB/s | 80,000 Mbps |
Examples: storage speed vs network speed
Gigabytes per second is the unit of drive benchmarks, RAID arrays and fast network storage. Converting to Mbps shows at a glance whether the network or the drive will set the pace of a copy.
- An NVMe SSD over the network. A drive rated at 3.5 GB/s can supply 28,000 Mbps. Even a 10 Gbps link carries only 10,000 Mbps, so when you copy from that drive to a NAS, the network is the bottleneck, not the SSD.
- A NAS on 2.5 Gbps. A 2.5 Gbps port carries at most 2,500 Mbps, which is 0.3125 GB/s. A NAS array that can read at 0.8 GB/s (6,400 Mbps) will be held back to well under half its speed by that port.
- A 10 GbE copy. File copy software shows 1.1 GB/s between two servers. That is 8,800 Mbps, 88% of the 10,000 Mbps signalling rate and a healthy result.
To turn these rates into copy times for a whole folder, use the file transfer time calculator, which includes 2.5 GbE, 10 GbE and Thunderbolt presets.
Pitfall: GB/s is not Gbps
Drive and copy tools write GB/s (gigabytes), while network gear is labelled in Gbps (gigabits). The factor between them is 8, so 1.25 GB/s = 10 Gbps. Mixing them makes a 10 Gbps link sound eight times faster than it is. Operating systems may also show GiB/s labelled as GB/s; 1 GiB/s is about 8,590 Mbps, not 8,000. For the reverse direction, use Mbps to GB/s; to switch between bit-based units only, see Gbps to Mbps. Smaller byte rates are easier to read in MB/s to Mbps.
Frequently asked questions
How many Mbps is 1 GB/s?
1 GB/s is 8,000 Mbps, or 8 Gbps. Multiply gigabytes per second by 8 for Gbps, then by 1,000 for Mbps.
What is the maximum GB/s on a 10 Gbps network?
10 Gbps divided by 8 is 1.25 GB/s. Real copies land a bit lower because of protocol overhead, so readings around 1.1 GB/s are normal on 10 GbE.
Why doesn't my fast SSD copy at full speed over the network?
The network link is usually slower than the drive. A 3.5 GB/s SSD needs 28,000 Mbps to run flat out, while Gigabit Ethernet carries 1,000 Mbps, which is 0.125 GB/s at most.