Gigabytes to Bytes converter

To convert gigabytes to bytes, enter the value in the first field. The result in bytes is calculated automatically using the exact conversion factor.

1 GB = 1000000000 B
1 B = 1 × 10^-9 GB

Formula: B = GB × 1000000000
GB = B × 1 × 10^-9

Definitions: 1 GB = 1000 MB

The gigabyte (GB) is 1,000,000,000 bytes in the SI system. Storage devices, memory cards and mobile data allowances are sold in gigabytes, and software that counts in units of 1,024 shows a smaller number for the same drive.

The byte (B) is 8 bits and is the basic unit for storing text and other data; one ASCII character takes one byte. Note the capital letter: B is bytes, while a lowercase b stands for bits.

See the conversion table with commonly used values, handy for quick reference or study.