Convert gigabytes to kilobytes
Converting gigabytes to kilobytes is a common data task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 GB equals 1,000,000 KB, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert gigabytes to kilobytes
To convert gigabytes to kilobytes, multiply the number of gigabytes by 1,000,000. For example, 10 GB × 1,000,000 = 10,000,000 KB.
KB = GB × 1,000,000
- Write down the value in gigabytes you want to convert.
- Multiply it by 1,000,000 (the exact GB→KB factor).
- The result is your value in kilobytes. Check it below with the converter or the table.
Conversion table
Common values of gigabytes and their equivalents in kilobytes:
| GB | KB |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 4 | 4,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 250 | 250,000,000 |
| 500 | 500,000,000 |
About these units
Gigabyte (GB). A gigabyte is 1,000 megabytes, roughly an hour of HD video or 250 songs. Smartphone storage, RAM and data plans are specified in gigabytes.
Kilobyte (KB). A kilobyte is 1,000 bytes in the decimal SI convention used by storage manufacturers. Plain text emails and small configuration files are measured in kilobytes.
Frequently asked questions
How do I convert gigabytes to kilobytes?
To convert gigabytes to kilobytes, multiply the number of gigabytes by 1,000,000. For example, 10 GB × 1,000,000 = 10,000,000 KB. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilobytes are in 1 gigabyte?
1 GB = 1,000,000 KB. That is the fixed relationship used by this converter and by international standards.
How many gigabytes are in 1 kilobyte?
1 KB = 0.000001 GB. If you are converting in the opposite direction, use our Kilobyte to Gigabyte converter for the dedicated table and FAQ.
Is the gigabytes to kilobytes conversion exact?
Yes — this site uses decimal SI prefixes, so 1 KB = 1,000 bytes exactly. Note that some operating systems report file sizes in binary units (1 KiB = 1,024 bytes), which can make numbers differ slightly from storage labels.
What is gigabyte used for?
A gigabyte is 1,000 megabytes, roughly an hour of HD video or 250 songs. Smartphone storage, RAM and data plans are specified in gigabytes.