Megabits (Mbit) to Gigabytes (GB) Conversion
Megabits
The megabit (Mbit) is a unit of digital information equal to exactly 1,000,000 bits (10⁶ bits). It is the standard unit for expressing internet connection speeds: a "100 Mbps" broadband connection transfers 100 million bits per second, equivalent to 12.5 megabytes (MB/s). This factor-of-8 difference between megabits and megabytes is a frequent source of consumer confusion when comparing marketed connection speeds against actual file download rates.
Gigabytes
The gigabyte (GB) is a unit of digital information equal to 1,000,000,000 bytes (10⁹ bytes) in SI decimal, or 1,073,741,824 bytes in binary convention. It is the dominant unit for consumer storage — smartphone internal storage, USB drives, and SD cards are sold in gigabytes. One hour of standard HD streaming consumes approximately 3 GB; one hour of 4K video requires 7–15 GB depending on encoding. Monthly mobile data plans are universally priced per gigabyte.
| Megabits (Mbit) | Gigabytes (GB) |
|---|---|
| 0.1 Mbit | 0.0000125 GB |
| 1 Mbit | 0.000125 GB |
| 2 Mbit | 0.00025 GB |
| 3 Mbit | 0.000375 GB |
| 5 Mbit | 0.000625 GB |
| 10 Mbit | 0.00125 GB |
| 20 Mbit | 0.0025 GB |
| 30 Mbit | 0.00375 GB |
| 50 Mbit | 0.00625 GB |
| 100 Mbit | 0.0125 GB |
| 1000 Mbit | 0.125 GB |
Frequently Asked Questions (FAQ)
How many gigabytes are in 1 megabits?
1 megabits (Mbit) is exactly 0.000125 gigabytes (GB).
How do I convert megabits to gigabytes?
Multiply the value in megabits by 0.000125 to get the result in gigabytes. Or use the converter above — type any number and see the result instantly.