How many Mbps are in 1 GB/s?

1 GB/s = 8,000 Mbps. This uses the SI prefix where 1 GB = 1,000 MB and 1 byte = 8 bits, so 1 GB/s × 8 bits/byte × 1,000 MB/GB = 8,000 Mbps.

What is the difference between GB/s and Mbps?

GB/s (uppercase B) measures throughput in gigabytes per second; Mbps (lowercase b) measures bandwidth in megabits per second. Storage speeds are typically quoted in GB/s while network speeds are quoted in Mbps or Gbps, making this conversion useful when comparing the two.

Does this tool use SI (decimal) or binary units?

SI decimal: 1 GB = 1,000,000,000 bytes and 1 Mb = 1,000,000 bits. This matches how storage manufacturers and most networking equipment quote speeds. If your value is in GiB/s (binary), the exact multiplier is 8,589.934592 Mbps per GiB/s.

How do I convert GB/s to Gbps?

Multiply GB/s by 8. For example, 3.5 GB/s = 28 Gbps. To convert Gbps to Mbps, multiply by 1,000. So 3.5 GB/s = 28,000 Mbps.

Why are storage speeds in GB/s but network speeds in Mbps?

Storage vendors use bytes because files are measured in bytes. Network engineers use bits because serial transmission counts individual bits. The two worlds collide when you need to know if a disk can feed a network link fast enough — hence this converter.

GB/s to Mbps Converter

Convert gigabytes per second (GB/s) to megabits per second (Mbps) — 1 GB/s = 8,000 Mbps.

Gigabytes per second (GB/s)

Enter a value in GB/s

Megabits per second (Mbps)

Result in Mbps

Common conversions

GB/s	Mbps	Common context
0.125	1,000	1 Gbps network link
0.6	4,800	SATA III limit
1	8,000	PCIe 3.0 x1
3.5	28,000	NVMe PCIe 3.0 x4
7	56,000	NVMe PCIe 4.0 x4
14	112,000	NVMe PCIe 5.0 x4

Summary

This tool converts gigabytes per second (GB/s) to megabits per second (Mbps) using the SI definition: 1 byte = 8 bits and 1 GB = 1,000 MB, giving 1 GB/s = 8,000 Mbps. It is commonly used to compare storage interface speeds (NVMe, SATA) with network bandwidth figures that are always quoted in megabits, making it straightforward to answer "is my disk faster than my network link?"

How it works

Enter a value in gigabytes per second (GB/s) in the input field.
The converter multiplies your value by 8,000 — 8 bits per byte times 1,000 megabits per gigabit.
The Mbps result appears instantly in the output field.
Use the Swap button to convert Mbps back to GB/s.
Copy either result to your clipboard with one click.

Use cases

Compare NVMe SSD read speeds (e.g. 7 GB/s) against a 10 Gbps (10,000 Mbps) network link.
Check whether a storage array throughput in GB/s can saturate a 100 Gbps backbone.
Convert SATA III theoretical limit (0.6 GB/s) into Mbps for network planning docs.
Translate PCIe bandwidth figures from GB/s into Mbps for vendor spec comparisons.
Validate that a disk-to-disk copy speed in GB/s does not exceed WAN link capacity in Mbps.
Convert memory bandwidth from GB/s to Mbps when estimating streaming data pipeline limits.

Frequently Asked Questions

Last updated: 2026-09-11 · Reviewed by Nham Vu