Gigabit digital storage unit.
Gigabits to GB Converter — Gb to GB
Convert Gigabit (Gb) to GB (GB) using the exact conversion factor (1 gigabit = 0.125 gb). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Gigabits to GB converter
Converter
Digital Storage Converter
Convert bits, bytes, decimal storage, binary storage, nibbles, and word sizes.
Context values
Some unit families need one extra value for a physically accurate result.
GB digital storage unit.
Result = input x 1e+9 / 8e+9.
Digital storage uses bits as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gigabits to GB
Gigabit and GB are everyday digital-storage units, used for everything from file sizes and app downloads to storage device capacity and mobile data allowances. Gigabit is typically associated with used worldwide for high-speed network ratings (fiber internet, data centers), while GB is typically associated with used worldwide as a standard digital storage unit.
Formula
gb = gigabits × 0.125
This factor comes from each unit's defined relationship to the category's base unit: 1 gigabit equals 1000000000 base units, and 1 gb equals 8000000000 base units, so dividing one by the other gives the direct gigabit-to-gb factor of 0.125.
Simple example
1 Gb × 0.125 = 0.125 GB
1 gigabit = 0.125 gb.
Real-world example
500 Gb × 0.125 = 62.5 GB
500 gigabits = 62.5 gb.
Conversion table
| Gigabit (Gb) | GB (GB) |
|---|---|
| 1 Gb | 0.125 GB |
| 8 Gb | 1 GB |
| 16 Gb | 2 GB |
| 64 Gb | 8 GB |
| 256 Gb | 32 GB |
| 1,000 Gb | 125 GB |
Reverse conversion: GB to Gigabit
0.125 GB × 8 = 1 Gb
0.125 gb = 1 gigabit.
gigabits = gb × 8
For a page dedicated to this direction, see GB to Gigabit.
Gigabit vs. GB
| Aspect | Gigabit | GB |
|---|---|---|
| Family | Decimal (SI-prefixed) digital unit | Decimal (SI-prefixed) digital storage unit |
| Typical use | Gigabit fiber internet service advertising | Storage device and SSD/HDD capacity labeling |
| Where it's used | Used worldwide for high-speed network ratings (fiber internet, data centers) | Used worldwide as a standard digital storage unit |
Understanding the Gigabit
Gigabit (Gb) measures digital storage/transfer. A gigabit is 1,000 megabits (125 megabytes) under the decimal convention used for network speeds. It is classified as a Decimal (SI-prefixed) digital unit.
Where it's used: Used worldwide for high-speed network ratings (fiber internet, data centers)
Uses of the Gigabit today
- Gigabit fiber internet service advertising
- Data center and enterprise network bandwidth
History of the Gigabit
As internet speeds crossed the 1,000 Mbps threshold with fiber-optic and enterprise networking, 'gigabit' became the standard marketing term for these connections, following the same bits-per-second convention established for slower network speeds.
Historical origin. Gigabit was not the invention of a single named person; it developed through the process described above.
Understanding the GB
GB (GB) measures digital storage. In the decimal convention, 1 gigabyte equals 1,000 megabytes (10⁹ bytes). It is classified as a Decimal (SI-prefixed) digital storage unit.
Where it's used: Used worldwide as a standard digital storage unit
Uses of the GB today
- Storage device and SSD/HDD capacity labeling
- Mobile data plan allowances
- Software and media file size reporting
History of the GB
Like the megabyte, the gigabyte inherited ambiguity between decimal (10⁹) and binary (2³⁰) interpretations from early computing conventions, resolved formally by the 1998 IEC binary-prefix standard, which reserves 'gigabyte' for the decimal meaning and 'gibibyte' (GiB) for the binary one.
Historical origin. GB was not the invention of a single named person; it developed through the process described above.
Gigabit — sources
- IEC 80000-13 — Defines bit-based units distinct from byte-based units.
GB — sources
- IEC 80000-13 — International standard defining binary prefixes distinct from decimal SI prefixes.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gb are in 1 gigabit?
1 gigabit equals 0.125 gb, using the exact defined conversion factor rather than an estimate.
How do I convert gigabit to gb?
Multiply the gigabit value by 0.125. The converter above does this instantly to whatever precision you set.
How do I convert gb back to gigabit?
Use the reverse factor: 1 gb equals 8 gigabits. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigabit?
Gigabit (Gb) measures digital storage/transfer. A gigabit is 1,000 megabits (125 megabytes) under the decimal convention used for network speeds. It is classified as a Decimal (SI-prefixed) digital unit.
What is a gb?
GB (GB) measures digital storage. In the decimal convention, 1 gigabyte equals 1,000 megabytes (10⁹ bytes). It is classified as a Decimal (SI-prefixed) digital storage unit.
Is the gigabit to gb conversion exact?
Yes. Both gigabit and gb are defined by fixed standards rather than physical artifacts, so the factor of 0.125 used above is exact to as many digits as you choose to display.
Where is the gigabit still used today?
Used worldwide for high-speed network ratings (fiber internet, data centers)