GB to Bytes Converter

How to convert gigabytes to bytes

FormulaB = GB × 1,000,000,000

Multiply the value in gigabytes by 1,000,000,000. To go the other way, multiply by 1×10⁻⁹ (or divide by 1,000,000,000).

A gigabyte is larger than a byte: one gigabyte contains 1,000,000,000 bytes.

Worked examples

1 gigabyte1 GB × 1,000,000,000 = 1,000,000,000 B
5 gigabytes5 GB × 1,000,000,000 = 5,000,000,000 B
10 gigabytes10 GB × 1,000,000,000 = 10,000,000,000 B
20 gigabytes20 GB × 1,000,000,000 = 20,000,000,000 B
100 gigabytes100 GB × 1,000,000,000 = 100,000,000,000 B

Gigabytes to bytes conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Gigabytes to bytes: 0.1–10 GB
Gigabytes (GB)	Bytes (B)
0.1 GB	100,000,000 B
0.25 GB	250,000,000 B
0.5 GB	500,000,000 B
1 GB	1,000,000,000 B
2 GB	2,000,000,000 B
3 GB	3,000,000,000 B
4 GB	4,000,000,000 B
5 GB	5,000,000,000 B
6 GB	6,000,000,000 B
7 GB	7,000,000,000 B
8 GB	8,000,000,000 B
9 GB	9,000,000,000 B
10 GB	10,000,000,000 B

Gigabytes to bytes: 12–1,000 GB
Gigabytes (GB)	Bytes (B)
12 GB	12,000,000,000 B
15 GB	15,000,000,000 B
20 GB	20,000,000,000 B
25 GB	25,000,000,000 B
30 GB	30,000,000,000 B
40 GB	40,000,000,000 B
50 GB	50,000,000,000 B
75 GB	75,000,000,000 B
100 GB	100,000,000,000 B
250 GB	250,000,000,000 B
500 GB	500,000,000,000 B
1,000 GB	1,000,000,000,000 B

About the units

Gigabyte (GB)

10⁹ bytes. Phone storage, data plans and RAM are sold in GB. One gigabyte equals 8,000,000,000 bits (b).

Byte (B)

Eight bits; the basic addressable unit of memory. One byte equals 8 bits (b).

Frequently asked questions

How many bytes are in one gigabyte?

There are 1,000,000,000 bytes in one gigabyte, and this value is exact by definition.

How do I convert gigabytes to bytes?

Multiply the number of gigabytes by 1,000,000,000. For example, 10 GB × 1,000,000,000 = 10,000,000,000 B.

How many gigabytes are in one byte?

One byte equals 1×10⁻⁹ gigabytes. That is the reverse factor, 1 ÷ 1,000,000,000.

What is 10 gigabytes in bytes?

10 GB = 10,000,000,000 B.

Is this GB to B converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.