Gigabyte is a digital storage unit with the symbol GB. 1 GB = 1e+9 B It belongs to the data storage system used across Xunits converter pages.
Quick facts
- Unit name
- Gigabyte
- Plural
- gigabytes
- Symbol
- GB
- Quantity
- digital storage
- Category
- Data Storage
- Base relationship
- 1 GB = 1e+9 B
- Base unit
- Byte (B)
- Converter hub
- Data Storage converter
Scale comparison
This chart places GB beside neighboring data storage units by their relationship to B.
Definition and symbol
The gigabyte is written with the symbol GB. In professional writing, keep the number and symbol together, preserve capitalization, and avoid replacing the symbol with a similar-looking informal abbreviation unless the source uses it.
Scale and relationships
Gigabyte is best understood relative to nearby data storage units. Data storage units measure stored information. This converter uses byte as the base unit and separates decimal units such as KB and MB from binary units such as KiB and MiB. The table below shows the exact Xunits relationship used by converter pages.
| Unit | Symbol | Relationship |
|---|---|---|
| Byte | B | 1 B is the base reference for this Xunits data storage category. |
| Kilobyte | KB | 1 KB = 1,000 B |
| Megabyte | MB | 1 MB = 1,000,000 B |
| Gigabyte | GB | 1 GB = 1e+9 B |
| Terabyte | TB | 1 TB = 1e+12 B |
| Kibibyte | KiB | 1 KiB = 1,024 B |
| Mebibyte | MiB | 1 MiB = 1,048,576 B |
| Gibibyte | GiB | 1 GiB = 1.07374182e+9 B |
Where gigabyte is used
Data storage units appear in files, cloud quotas, phone storage, hosting limits, memory cards, backups, operating systems, and database capacity planning. Gigabyte is especially useful when the source instrument, document, product listing, or regional convention uses GB as its native unit.
Common mistakes
- Do not assume MB and MiB are the same. Decimal storage uses powers of 1000, while binary storage uses powers of 1024.
- Do not compare GB values with another unit until both values are converted to the same basis.
- Do not round too early when the value is used for sizing, limits, billing, reporting, or technical documentation.
Converters and formulas
Open a converter page when you need a direct calculation involving gigabyte.
Related unit guides
Compare GB with neighboring units in the same category.
FAQ
What is a gigabyte?
Gigabyte is a digital storage unit represented by GB. 1 GB = 1e+9 B
How do I convert gigabyte to another unit?
Use a matching Xunits converter page, or convert through the base relationship shown above. For most professional work, keep the original value visible and round only the final answer.
What is the most common mistake with GB?
The most common mistake is treating the numeric value as self-explanatory. Always keep the unit symbol and context with the number.