How many MB/s are in 1 GB/s?

1 GB/s equals exactly 1,000 MB/s. The SI prefix "giga" means 1,000 × "mega", so the conversion factor is simply 1,000.

Is this using decimal (1,000) or binary (1,024) conversion?

Decimal (1,000). Networking and storage hardware vendors use SI prefixes: 1 GB/s = 1,000 MB/s. If you need the binary version (gibibytes, GiB/s to mebibytes, MiB/s) the factor is 1,024 — but the decimal definition is correct for most drive and network specs.

What is a typical NVMe SSD speed in GB/s?

PCIe 3.0 NVMe drives typically reach 3–3.5 GB/s (3,000–3,500 MB/s) sequential read. PCIe 4.0 drives push 5–7 GB/s, and PCIe 5.0 drives can exceed 12 GB/s.

How does GB/s relate to Gbps?

GB/s is gigabytes per second; Gbps is gigabits per second. Since 1 byte = 8 bits, 1 GB/s = 8 Gbps. A 10 Gbps Ethernet port delivers at most 1.25 GB/s of data throughput.

Why do some tools show GiB/s instead of GB/s?

GiB/s uses the binary gibibyte (1 GiB = 1,073,741,824 bytes) versus the decimal gigabyte (1 GB = 1,000,000,000 bytes). For storage benchmarks, check whether the tool uses IEC (binary) or SI (decimal) prefixes — the difference is about 7%.

MB/s to GB/s Converter

Name: MB/s to GB/s Converter
Availability: InStock
Author: Nham Vu

Enter any MB/s or GB/s value for an instant bidirectional conversion using the formula 1 GB/s = 1,000 MB/s.

Enter a Value

Megabytes per second (MB/s)

Gigabytes per second (GB/s)

Formula: GB/s = MB/s ÷ 1,000

Result

Enter a value on the left to see the result.

Common Transfer Speed Reference

Interface / Standard	MB/s	GB/s
SATA III (theoretical max)	600	0.6
USB 3.1 Gen 1 (5 Gbps)	625	0.625
USB 3.2 Gen 2 (10 Gbps)	1,250	1.25
PCIe 3.0 NVMe SSD (typical)	3,500	3.5
PCIe 4.0 NVMe SSD (typical)	7,000	7.0
Thunderbolt 4 / USB4 (40 Gbps)	5,000	5.0
PCIe 5.0 NVMe SSD (typical)	12,000	12.0

Summary

Enter any MB/s or GB/s value for an instant bidirectional conversion using the formula 1 GB/s = 1,000 MB/s.

How it works

Enter a value in the MB/s field or the GB/s field.
The converter applies the formula: GB/s = MB/s ÷ 1,000 (or MB/s = GB/s × 1,000).
The opposite field updates instantly as you type.
Copy either result with one click.
Use the reference table to compare your result against common transfer speeds.

Use cases

Convert SSD sequential read/write specs from MB/s into GB/s for quick comparisons.
Translate network interface bandwidth from MB/s to GB/s when reading data center specs.
Check whether a storage array throughput figure in MB/s meets a GB/s target.
Convert memory bandwidth benchmarks between MB/s and GB/s.
Verify data-pipeline throughput requirements when specs mix MB/s and GB/s units.
Compare PCIe, NVMe, and SATA drive speeds across different unit scales.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu