Convert Megabits to Gigabits (Mbit to Gbit)
1 megabit (Mbit) = 0.001 gigabits (Gbit). 1 Gbit = 1000 Mbit. Example: 15 Mbit = 15 × 0.001 = 0.015 Gbit.
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1 Mbit = 0.001 Gbit
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megabit to gigabit converter to paste a column from Excel.
How to Convert Megabit to Gigabit
- 1 Mbit = 0.001 Gbit
- 1 Gbit = 1000 Mbit
- Example: convert 15 Mbit to Gbit: 15 Mbit = 15 × 0.001 Gbit = 0.015 Gbit
Formula
Gbit = Mbit ÷ 1000
Derivation from SI units:
- 1 Mbit = 10⁶ bits.
- 1 Gbit = 10⁹ bits.
- 1 Mbit = 1000000 bit ÷ 1000000000 bit per Gbit = 0.001 Gbit
Both units are defined exactly, so the factor is exact. Megabit definition: megabit; Gigabit definition: gigabit.
Worked examples
- A reading of 16 Mbit converts to 0.016 Gbit.
16 Mbit × 0.001 = 0.016 Gbit - A value of 128 Mbit is 0.128 Gbit.
128 Mbit × 0.001 = 0.128 Gbit
Megabit to Gigabit conversion table
| Megabits (Mbit) | Gigabits (Gbit) |
|---|---|
| 1 Mbit | 0.001 Gbit |
| 2 Mbit | 0.002 Gbit |
| 4 Mbit | 0.004 Gbit |
| 8 Mbit | 0.008 Gbit |
| 16 Mbit | 0.016 Gbit |
| 32 Mbit | 0.032 Gbit |
| 64 Mbit | 0.064 Gbit |
| 100 Mbit | 0.1 Gbit |
| 128 Mbit | 0.128 Gbit |
| 256 Mbit | 0.256 Gbit |
| 500 Mbit | 0.5 Gbit |
| 1000 Mbit | 1 Gbit |
Where it's used
Megabits are used for network and broadband quantities, while gigabits appear in DRAM and NAND flash chip densities. Both measure amount of digital information, so the conversion is a fixed factor.
Megabit to other data storage units
| Conversion | 1 Mbit equals |
|---|---|
| megabit to gigabit | 0.001 Gbit |
| megabit to byte | 125000 B |
| megabit to kilobyte | 125 kB |
| megabit to megabyte | 0.125 MB |
| megabit to gigabyte | 0.000125 GB |
| megabit to terabyte | 1.25 × 10⁻⁷ TB |
| megabit to bit | 1000000 bit |
| megabit to kibibyte | 122.0703125 KiB |
Show 5 more units
| megabit to mebibyte | 0.1192092896 MiB |
|---|---|
| megabit to gibibyte | 0.0001164153218 GiB |
| megabit to kilobit | 1000 kbit |
| megabit to petabyte | 1.25 × 10⁻¹⁰ PB |
| megabit to tebibyte | 1.136868377 × 10⁻⁷ TiB |
Frequently asked questions
How many gigabits are in 1 megabit?
1 Mbit = 0.001 Gbit.
How do I convert megabits to gigabits?
Multiply the value in Mbit by 0.001, or divide it by 1000. For example, 15 Mbit × 0.001 = 0.015 Gbit.
Is the Mbit to Gbit conversion exact?
Yes. Both units are defined exactly, and 1 Mbit is exactly 0.001 Gbit.
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 Megabits to Gigabits (Mbit to Gbit). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/megabits-to-gigabits/
IEEE
Scientific Converters, "Convert Megabits to Gigabits (Mbit to Gbit)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/megabits-to-gigabits/