How do I convert gigabytes back to bytes?

Use the reverse converter: 1 gigabyte equals 1000000000 B.

Is this converter accurate?

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

256 bytes to gigabytes (256 B to GB)

Open the full bytes to gigabytes converter

Formula

To convert bytes to gigabytes, multiply the value by 1e-9.

GB = B × 1e-9

How to convert 256 B to GB

256 B × 1e-9 = 2.56e-7 GB

Values near 256 B

bytes → gigabytes
B	GB
246	2.46e-7
247	2.47e-7
248	2.48e-7
249	2.49e-7
250	2.5e-7
251	2.51e-7
252	2.52e-7
253	2.53e-7
254	2.54e-7
255	2.55e-7
256	2.56e-7
257	2.57e-7
258	2.58e-7
259	2.59e-7
260	2.6e-7
261	2.61e-7
262	2.62e-7
263	2.63e-7
264	2.64e-7
265	2.65e-7
266	2.66e-7

Decimal vs binary: KB, MB and GB use powers of 1,000 (SI), while KiB, MiB and GiB use powers of 1,024. Storage makers use decimal units; many operating systems and memory sizes use binary ones, which is why a "500 GB" drive shows less space.

About the units

Byte (B): Eight bits, the basic unit of computer storage and the size of one character in many encodings.
Gigabyte (GB): 1,000,000,000 bytes in the decimal system, used for drive capacity and data plans.

Frequently asked questions

How do I convert bytes to gigabytes?: To convert bytes to gigabytes, multiply the value by 1e-9.
How many gigabytes are in 1 byte?: 1 byte equals 1e-9 GB.
How many gigabytes are in 10 bytes?: 10 B equals 1e-8 GB.
How do I convert gigabytes back to bytes?: Use the reverse converter: 1 gigabyte equals 1000000000 B.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.