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.

Gigabytes to Bytes Converter (GB to B)

Formula

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

B = GB × 1000000000

Example calculation

Convert 10 GB to B:

10 GB × 1000000000 = 10000000000 B

Conversion table

gigabytes → bytes
GB	B
1	1000000000.0000
2	2000000000.0000
3	3000000000.0000
4	4000000000.0000
5	5000000000.0000
6	6000000000.0000
7	7000000000.0000
8	8000000000.0000
9	9000000000.0000
10	10000000000.0000
15	15000000000.0000
20	20000000000.0000
25	25000000000.0000
30	30000000000.0000
35	35000000000.0000
40	40000000000.0000
45	45000000000.0000
50	50000000000.0000
55	55000000000.0000
60	60000000000.0000
65	65000000000.0000
70	70000000000.0000
75	75000000000.0000
80	80000000000.0000
85	85000000000.0000
90	90000000000.0000
95	95000000000.0000
100	100000000000.0000
200	200000000000.0000
500	500000000000.0000
1000	1e+12

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.