How many bytes are in 1 gigabyte?

1 gigabyte equals 1000000000 B.

How do I convert bytes back to gigabytes?

Use the reverse converter: 1 byte equals 1e-9 GB.

Is this converter accurate?

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

256 gigabytes to bytes (256 GB to B)

Open the full gigabytes to bytes converter

Formula

To convert gigabytes to bytes, multiply the value by 1000000000.

B = GB × 1000000000

How to convert 256 GB to B

256 GB × 1000000000 = 256000000000 B

Values near 256 GB

gigabytes → bytes
GB	B
246	246000000000.0000
247	247000000000.0000
248	248000000000.0000
249	249000000000.0000
250	250000000000.0000
251	251000000000.0000
252	252000000000.0000
253	253000000000.0000
254	254000000000.0000
255	255000000000.0000
256	256000000000.0000
257	257000000000.0000
258	258000000000.0000
259	259000000000.0000
260	260000000000.0000
261	261000000000.0000
262	262000000000.0000
263	263000000000.0000
264	264000000000.0000
265	265000000000.0000
266	266000000000.0000

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

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

Frequently asked questions

How do I convert gigabytes to bytes?: To convert gigabytes to bytes, multiply the value by 1000000000.
How many bytes are in 1 gigabyte?: 1 gigabyte equals 1000000000 B.
How many bytes are in 10 gigabytes?: 10 GB equals 10000000000 B.
How do I convert bytes back to gigabytes?: Use the reverse converter: 1 byte equals 1e-9 GB.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.