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Convert gigabytes to kilobytes
Instant, accurate GB → KB conversion with a live converter, table and formula.
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1 gigabyte = 1000000 kilobytes
1 kilobyte = 0.000001 gigabytes
gigabytes to kilobytes table
| gigabytes (GB) | kilobytes (KB) |
|---|---|
| 0.5 | 500000 |
| 1 | 1000000 |
| 2 | 2000000 |
| 5 | 5000000 |
| 10 | 10000000 |
| 20 | 20000000 |
| 50 | 50000000 |
| 100 | 100000000 |
| 500 | 500000000 |
| 1000 | 1000000000 |
Formula
kilobytes = gigabytes × 1000000.
Example
10 gigabytes = 10000000 kilobytes.
What is a gigabyte?
A gigabyte (GB) is 1,000 megabytes — a few hours of video.
What is a kilobyte?
A kilobyte (KB) is 1,000 bytes.
Real-world reference points
A photo is a few MB; an MP3 song ~4 MB; an HD movie ~4 GB; a modern phone stores 128+ GB.
| Reference | gigabytes | kilobytes |
|---|---|---|
| E-mail (text only) | 0.00002 GB | 20 KB |
| Smartphone photo | 0.003 GB | 3,000 KB |
| MP3 song | 0.004 GB | 4,000 KB |
| DVD capacity | 4.7 GB | 4,700,000 KB |
| HD movie stream | 4 GB | 4,000,000 KB |
Mistakes to avoid with data conversions
- Megabits vs megabytes: your '100 Mbps' connection downloads at ~12.5 MB/s — ISPs quote bits, files are bytes.
- Decimal vs binary units: drives are sold in decimal GB (10⁹), so a '1 TB' drive shows ~931 'GB' (GiB) in Windows.
- Assuming video size scales with length only — resolution and bitrate matter more than minutes.
Frequently asked questions
How many kilobytes in a gigabytes?+
1 gigabyte = 1000000 kilobytes.
How do I convert gigabytes to kilobytes?+
Enter the value in the gigabytes box above and the kilobytes value appears instantly. You can also type in the kilobytes box to convert the other way.
Is this GB to KB converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.