Convert Gigabyte to Kilobyte
Turn Gigabytes into Kilobytes in an instant. Type a value below to get an accurate GB → KB result, with the formula and a quick-reference table.
1 GB = 1,000,000 KB
Quick answer: 1 Gigabyte = 1,000,000 Kilobyte
Gigabyte to Kilobyte conversion table
| Gigabyte (GB) | Kilobyte (KB) |
|---|---|
| 1 GB | 1,000,000 KB |
| 2 GB | 2,000,000 KB |
| 5 GB | 5,000,000 KB |
| 10 GB | 10,000,000 KB |
| 20 GB | 20,000,000 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 |
How to convert Gigabyte to Kilobyte
To convert Gigabytes to Kilobytes, multiply the value by 1,000,000.
- Take your measurement in Gigabytes.
- Multiply it by 1,000,000 — the number of Kilobytes in one Gigabyte.
- The result is the same amount, expressed in Kilobytes.
To go the other way, multiply Kilobytes by 0.000001 — or simply divide by 1,000,000.
For example, an HD movie is about 5 GB, which is 5,000,000 KB.
About Gigabyte and Kilobyte
A gigabyte is 1,000 megabytes (one billion bytes). It sizes movies, phone storage and mobile data plans.
A kilobyte is 1,000 bytes in the decimal (SI) convention used by storage makers and macOS. It sizes small files such as documents, icons and short emails.
Both the Gigabyte and the Kilobyte are decimal (SI) units, so converting between them is just a change of scale: one Gigabyte equals 1,000,000 Kilobytes, and the Gigabyte is the larger unit.
Other data storage conversions
Frequently asked questions
How many Kilobytes are in a Gigabyte?
1 Gigabyte equals 1,000,000 Kilobyte (GB → KB). To convert any amount, multiply the number of Gigabytes by 1,000,000.
How do I convert Gigabyte to Kilobyte?
Enter the number of Gigabytes in the converter above and read the result in Kilobytes. It applies the exact GB → KB factor instantly, with full precision.
Is the Gigabyte to Kilobyte converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined data storage factors and full floating-point precision, then rounds the display to a clean, readable number.