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Gigabytes to bytes

bytes = gigabytes × 1,000,000,000

Reverse: bytes to gigabytes

How to convert gigabytes to bytes

One gigabyte is 1,000,000,000 bytes, so multiply the number of gigabytes by 1,000,000,000. For example, 20 gigabytes is 20 × 1,000,000,000 = 20,000,000,000 bytes. To go back, divide by the same number, or multiply by 1e-9.

Quick estimate

Multiplying by about 1000000000 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Data conversions come up when comparing storage on phones and drives, file and download sizes, and internet plans.

gigabytesbytes
1 gb1,000,000,000 b
2 gb2,000,000,000 b
3 gb3,000,000,000 b
4 gb4,000,000,000 b
5 gb5,000,000,000 b
6 gb6,000,000,000 b
7 gb7,000,000,000 b
8 gb8,000,000,000 b
9 gb9,000,000,000 b
10 gb10,000,000,000 b
11 gb11,000,000,000 b
12 gb12,000,000,000 b
13 gb13,000,000,000 b
14 gb14,000,000,000 b
15 gb15,000,000,000 b
16 gb16,000,000,000 b
17 gb17,000,000,000 b
18 gb18,000,000,000 b
19 gb19,000,000,000 b
20 gb20,000,000,000 b
25 gb25,000,000,000 b
30 gb30,000,000,000 b
40 gb40,000,000,000 b
50 gb50,000,000,000 b
60 gb60,000,000,000 b
70 gb70,000,000,000 b
75 gb75,000,000,000 b
80 gb80,000,000,000 b
90 gb90,000,000,000 b
100 gb100,000,000,000 b
120 gb120,000,000,000 b
150 gb150,000,000,000 b
200 gb200,000,000,000 b
250 gb250,000,000,000 b
300 gb300,000,000,000 b
400 gb400,000,000,000 b
500 gb500,000,000,000 b
750 gb750,000,000,000 b
1,000 gb1,000,000,000,000 b
1,500 gb1,500,000,000,000 b
2,000 gb2,000,000,000,000 b
5,000 gb5,000,000,000,000 b
10,000 gb10,000,000,000,000 b

Questions

How many bytes are in a gigabyte?

1,000,000,000 bytes.

How do I convert gigabytes to bytes in a spreadsheet?

Put the value in A1 and type =A1*1000000000, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.