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

1 GB/s = 1,024 MB/s. This uses the binary prefix where 1 gigabyte = 1,024 megabytes. Some tools use the SI definition (1 GB = 1,000 MB), which gives 1,000 MB/s per GB/s — but storage benchmarks almost always use the binary convention.

What is the difference between GB/s and Gbps?

GB/s (uppercase B) is gigabytes per second; Gbps (lowercase b) is gigabits per second. 1 GB/s = 8 Gbps because 1 byte = 8 bits. This tool works with bytes, not bits.

Does this tool use binary (1,024) or decimal (1,000) conversion?

Binary: 1 GB = 1,024 MB, so 1 GB/s = 1,024 MB/s. This matches how most storage benchmarking tools and operating systems report speeds. If you need the SI decimal result, multiply GB/s by 1,000 instead.

Why do some benchmarks show GB/s while others show MB/s for the same drive?

Newer NVMe drives reach speeds above 1 GB/s, so reviewers often use GB/s for brevity. Older SATA or HDD speeds stay in the MB/s range. Both units describe the same physical transfer rate — 7 GB/s and 7,168 MB/s are the same speed.

How do I convert MB/s back to GB/s?

Divide the MB/s value by 1,024. For example, 5,120 MB/s ÷ 1,024 = 5 GB/s. Use the swap button in this tool to reverse the conversion automatically.

GB/s to MB/s Converter

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

Convert gigabytes per second (GB/s) to megabytes per second (MB/s) — 1 GB/s = 1,024 MB/s.

Gigabytes per second (GB/s)

Enter a value in GB/s

Megabytes per second (MB/s)

Result in MB/s

Common conversions

GB/s	MB/s	Common context
0.5	512	SATA III SSD limit
1	1,024	PCIe 3.0 x1 slot
3.5	3,584	NVMe PCIe 3.0 x4
7	7,168	NVMe PCIe 4.0 x4
14	14,336	NVMe PCIe 5.0 x4
100	102,400	High-end memory bandwidth

Summary

Convert gigabytes per second (GB/s) to megabytes per second (MB/s) — 1 GB/s = 1,024 MB/s.

How it works

Enter a value in gigabytes per second (GB/s) in the input field.
The converter multiplies your value by 1,024 — there are 1,024 megabytes in one gigabyte.
The MB/s result appears instantly in the output field.
Use the swap button to convert MB/s back to GB/s.
Copy either result to your clipboard with one click.
Reset both fields with the Reset button to start a new conversion.

Use cases

Convert NVMe SSD sequential read speeds (e.g. 7 GB/s) into MB/s for comparison with older SATA benchmarks.
Translate memory bandwidth figures from GB/s to MB/s when reviewing CPU spec sheets.
Compare PCIe slot throughput in MB/s against storage controller requirements.
Convert GPU memory bandwidth from GB/s to MB/s for game performance analysis.
Cross-check network storage transfer rates quoted in GB/s against MB/s-based thresholds.
Validate data pipeline assumptions when tools report throughput in different units.

Frequently Asked Questions

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