Gigabytes to Kilobytes
Convert gigabytes to kilobytes instantly. 1 GB = 1,000,000 KB. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert gigabytes to kilobytes
To convert gigabytes to kilobytes, multiply by 1,000,000. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
KB = GB × 1,000,000
Gigabytes to Kilobytes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Gigabytes | Kilobytes |
|---|---|
| 1 GB | 1,000,000 KB |
| 2 GB | 2,000,000 KB |
| 3 GB | 3,000,000 KB |
| 5 GB | 5,000,000 KB |
| 10 GB | 10,000,000 KB |
| 20 GB | 20,000,000 KB |
| 25 GB | 25,000,000 KB |
| 50 GB | 50,000,000 KB |
| 100 GB | 100,000,000 KB |
| 500 GB | 500,000,000 KB |
| 1,000 GB | 1,000,000,000 KB |
What is a gigabyte?
A billion bytes. Drive capacity is sold in these.
What is a kilobyte?
A thousand bytes in the SI sense, as used by storage manufacturers.
The formula
KB = GB × 1,000,000
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Gigabytes to Kilobytes
- Type the number of gigabytes you want to convert.
- Read the result in kilobytes straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked kilobytes to gigabytes page.
Gigabytes to Kilobytes — frequently asked questions
How many kilobytes are in a gigabyte?
One gigabyte equals 1,000,000 KB. KB = GB × 1,000,000
What is the formula to convert gigabytes to kilobytes?
The formula is KB = GB × 1,000,000. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert kilobytes back to gigabytes?
Divide instead of multiplying: one kilobyte is 1e-06 GB. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this gigabytes to kilobytes free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error