Convert Gigabytes to Megabits (GB to Mbit)
1 gigabyte (GB) = 8000 megabits (Mbit). 1 Mbit = 0.000125 GB. Example: 15 GB = 15 × 8000 = 120000 Mbit.
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1 GB = 8000 Mbit
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabyte to megabit converter to paste a column from Excel.
How to Convert Gigabyte to Megabit
- 1 GB = 8000 Mbit
- 1 Mbit = 0.000125 GB
- Example: convert 15 GB to Mbit: 15 GB = 15 × 8000 Mbit = 120000 Mbit
Formula
Mbit = GB × 8000
Derivation from SI units:
- 1 GB = 10⁹ bytes = 8 × 10⁹ bits (decimal, SI).
- 1 Mbit = 10⁶ bits.
- 1 GB = 8000000000 bit ÷ 1000000 bit per Mbit = 8000 Mbit
Both units are defined exactly, so the factor is exact. Gigabyte definition: gigabyte; Megabit definition: megabit.
Worked examples
- A reading of 16 GB converts to 128000 Mbit.
16 GB × 8000 = 128000 Mbit - A value of 128 GB is 1024000 Mbit.
128 GB × 8000 = 1024000 Mbit
Gigabyte to Megabit conversion table
| Gigabytes (GB) | Megabits (Mbit) |
|---|---|
| 1 GB | 8000 Mbit |
| 2 GB | 16000 Mbit |
| 4 GB | 32000 Mbit |
| 8 GB | 64000 Mbit |
| 16 GB | 128000 Mbit |
| 32 GB | 256000 Mbit |
| 64 GB | 512000 Mbit |
| 100 GB | 800000 Mbit |
| 128 GB | 1024000 Mbit |
| 256 GB | 2048000 Mbit |
| 500 GB | 4000000 Mbit |
| 1000 GB | 8000000 Mbit |
Where it's used
Gigabytes are used for phone and laptop storage, while megabits appear in network and broadband quantities. Both measure amount of digital information, so the conversion is a fixed factor.
Gigabyte to other data storage units
| Conversion | 1 GB equals |
|---|---|
| gigabyte to megabit | 8000 Mbit |
| gigabyte to byte | 1000000000 B |
| gigabyte to kilobyte | 1000000 kB |
| gigabyte to megabyte | 1000 MB |
| gigabyte to terabyte | 0.001 TB |
| gigabyte to bit | 8000000000 bit |
| gigabyte to kibibyte | 976562.5 KiB |
| gigabyte to mebibyte | 953.6743164 MiB |
Show 5 more units
| gigabyte to gibibyte | 0.9313225746 GiB |
|---|---|
| gigabyte to kilobit | 8000000 kbit |
| gigabyte to gigabit | 8 Gbit |
| gigabyte to petabyte | 0.000001 PB |
| gigabyte to tebibyte | 0.0009094947018 TiB |
Frequently asked questions
How many megabits are in 1 gigabyte?
1 GB = 8000 Mbit.
How do I convert gigabytes to megabits?
Multiply the value in GB by 8000. For example, 15 GB × 8000 = 120000 Mbit.
Is the GB to Mbit conversion exact?
Yes. Both units are defined exactly, and 1 GB is exactly 8000 Mbit.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gigabytes to Megabits (GB to Mbit). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/gigabytes-to-megabits/
IEEE
Scientific Converters, "Convert Gigabytes to Megabits (GB to Mbit)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/gigabytes-to-megabits/