Gigabyte to Kilobyte Converter

Data Converter

21 units available

Decimals:

From

To

1,048,576

1 GB = 1,048,576 KB

Formula:

KB = GB × 1,048,576

With your value: 1 GB = 1,048,576 KB

How big is that?

Everyday references on a logarithmic scale, all expressed in gigabyte so you can sanity-check the result.

Phone photo (1/2.7e+2 your value)0.000466 GB

MP3 song (1/2.1e+2 your value)0.000582 GB

CD-ROM (1/1.5 your value)0.0815 GB

Your value0.125 GB

HD movie (3.7× your value)0.466 GB

Laptop SSD (4.8e+2× your value)59.6 GB

Other Gigabyte to Kilobyte conversions

2 GB to KB 3 GB to KB 4 GB to KB 5 GB to KB 6 GB to KB 7 GB to KB 8 GB to KB

Gigabyte to Kilobyte Conversion Table

Gigabyte (GB)	Kilobyte (KB)
0.5	524,288
1	1,048,576
2	2,097,152
5	5,242,880
10	10,485,760
15	15,728,640
20	20,971,520
25	26,214,400
50	52,428,800
100	104,857,600
250	262,144,000
500	524,288,000
1000	1,048,576,000

Kilobyte to Gigabyte Conversion Table

Kilobyte (KB)	Gigabyte (GB)
0.5	4.768372e-7
1	9.536743e-7
2	1.907349e-6
5	4.768372e-6
10	9.536743e-6
15	1.430511e-5
20	1.907349e-5
25	2.384186e-5
50	4.768372e-5
100	9.536743e-5
250	0.000238
500	0.000477
1000	0.000954

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Gigabyte (GB)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

Kilobyte (KB)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

How to Convert Gigabyte to Kilobyte

To convert from Gigabyte (GB) to Kilobyte (KB), multiply the value by 1,048,576.

Formula: KB = GB × 1,048,576

Reverse: GB = KB × 9.536743e-7

Step-by-Step Example

Start with your value in Gigabyte. For example: 5 GB
Multiply by the conversion factor: 5 x 1,048,576
The result is: 5,242,880 KB

About Gigabyte

The gigabyte (GB) is a unit of digital storage. One gigabyte equals 1.073742 × 10^+9 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

About Kilobyte

The kilobyte (KB) is a unit of digital storage. One kilobyte equals 1024 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

Frequently Asked Questions

How many Kilobyte are in 1 Gigabyte?

There are exactly 1,048,576 Kilobyte in 1 Gigabyte. This means the conversion factor from Gigabyte to Kilobyte is 1,048,576.

What is the formula to convert Gigabyte to Kilobyte?

The formula to convert Gigabyte to Kilobyte is: KB = GB × 1,048,576. For example, to convert 10 Gigabyte to Kilobyte, you would multiply 10 by 1,048,576.

What is a Gigabyte?