Gigabytes (GB) to Megabits (Mb) Converter
Enter your Gigabytes (GB) value to convert to Megabits (Mb). 1 GB = 8,000 Mb, calculated across both decimal (SI) and binary (IEC) standards.
Convert Gigabytes to Megabits
Do you want to convert megabits to gigabytes?
How to Convert Gigabytes to Megabits
To convert gigabytes to megabits, multiply by 8 then adjust for scale. This converts byte-based storage measurements to bit-based units. Try the Megabits to Gigabytes.
GB is a byte-based unit used for measuring file sizes and storage capacity. You might also need: GB → Kb.
Mb is a bit-based unit—multiply bytes by 8 to get bits. Learn more: convert nibble to Mb.
1 GB = 8,000 Mb (using SI decimal standard) — which means there are 8,000megabits in every gigabyte.
GB to Mb Conversion Formula
// Convert GB to Mb
Mb = GB × 8,000
// Reverse: Convert Mb to GB
GB = Mb × 0.000125
GB to Mb Conversion Examples
100 GB = 800,000 Mb
256 GB = 2,048,000 Mb
500 GB = 4,000,000 Mb
1,000 GB = 8,000,000 Mb
2,048 GB = 16,384,000 Mb
What Is a Gigabyte?
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use. Related: Kib to Mib calculator.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. See also: GB/s to YiB/s converter.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans Try the GB to Yb.
1 GB = 8 × 10⁹ bits = 1 × 10⁹ bytes.
The gigabyte can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.
What Is a Megabit?
A megabit is 1,000 kilobits or 1,000,000 bits. Standard unit for internet connection speeds. Use our Zettabits in Megabits.
The megabit is a SI decimal bit unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. See also: converting Zebibits to Nibbles.
Common uses: Internet speeds (Mbps), video streaming bitrates, network bandwidth See also: TB/s to ZiB/s conversion rate.
1 Mb = 1 × 10⁶ bits = 125,000 bytes.
The megabit can be abbreviated as Mb; for example, 1 megabit can be written as 1 Mb.
Gigabyte to Megabit Conversion Table
The table below shows various gigabyte measurements converted to megabits.
| Gigabytes | Megabits |
|---|---|
| 1 GB | 8,000 Mb |
| 2 GB | 16,000 Mb |
| 5 GB | 40,000 Mb |
| 10 GB | 80,000 Mb |
| 25 GB | 200,000 Mb |
| 50 GB | 400,000 Mb |
| 100 GB | 800,000 Mb |
| 250 GB | 2,000,000 Mb |
| 500 GB | 4,000,000 Mb |
| 1,000 GB | 8,000,000 Mb |
💡 Storage Engineer Tip
Multiply bytes by 8 to get bits. A 10 MB file requires 80 Mb of bandwidth—essential when calculating transfer times over network links.
— Subash Geetha Krishnan, 15+ years in enterprise storage
When to Convert GB to Mb
Common scenario: Calculating bandwidth requirements for file transfers, or estimating how long uploads/downloads will take. Try the calculate GB to Zb.
Other situations include storage planning for calculating how much data fits in a given capacity, file management for understanding sizes across different scales, cost estimation for budgeting cloud storage, and backup planning for determining media requirements. Learn more: Kilobytes to Megabits converter.