Gigabyte to Kilobyte Converter
One Gigabyte equals 1048576 Kilobyte (1 GB = 1048576 KB). Multiply a Gigabyte value by 1048576 to get the equivalent in Kilobyte. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
KB = GB × 1048576
Multiply the Gigabyte value by 1048576 to get the equivalent value in Kilobyte.
Example Conversions
1 Gigabyte (GB)
1048576 Kilobyte (KB)
5 Gigabyte (GB)
5242880 Kilobyte (KB)
10 Gigabyte (GB)
10485760 Kilobyte (KB)
25 Gigabyte (GB)
26214400 Kilobyte (KB)
100 Gigabyte (GB)
104857600 Kilobyte (KB)
Conversion Table
| Gigabyte (GB) | Kilobyte (KB) |
|---|---|
| 0.1 | 104857.6 |
| 0.5 | 524288 |
| 1 | 1048576 |
| 2 | 2097152 |
| 5 | 5242880 |
| 10 | 10485760 |
| 25 | 26214400 |
| 50 | 52428800 |
| 100 | 104857600 |
| 250 | 262144000 |
| 500 | 524288000 |
| 1000 | 1048576000 |
How to Convert Manually
Use these steps to convert Gigabyte values to Kilobyte without the calculator.
- Write down the value in Gigabyte (GB) that you want to convert.
- Multiply that value by 1048576.
- For example, 10 Gigabyte × 1048576 = 10485760 Kilobyte.
- Label the result as Kilobyte (KB).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Gigabyte and one Kilobyte.
About Gigabyte and Kilobyte
The gigabyte here is 1,024 megabytes, about a billion bytes. RAM, phone storage, and mobile data plans are sold in gigabytes. The kilobyte here is 1,024 bytes (the binary convention operating systems use, formally 'kibibyte'). Small documents, icons, and emails are kilobyte-scale. One Gigabyte equals 1048576 Kilobyte (1 GB = 1048576 KB). Gigabyte to Kilobyte conversion comes up most often in phone and laptop storage and in RAM capacity, typically when figures need restating for text documents and emails.
Precision and Rounding: This converter uses the binary convention (1 KB = 1,024 bytes), which matches how operating systems report file and memory sizes. Storage manufacturers label drives with decimal units (1 GB = 1,000,000,000 bytes), which is why a '1 TB' drive shows roughly 931 GB in your OS — check which convention your source uses.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Gigabyte equals 15728640 Kilobyte.
15 GB × 1048576 = 15728640 KB
FAQ
How do I convert Gigabyte to Kilobyte?
Multiply the Gigabyte value by 1048576 to get the equivalent value in Kilobyte.
What is the formula for Gigabyte to Kilobyte?
The formula is KB = GB × 1048576.
How many Kilobyte are in 1 Gigabyte?
1 Gigabyte equals 1048576 Kilobyte.
Can I convert Kilobyte back to Gigabyte?
Yes. 1 Kilobyte equals 9.536743e-7 Gigabyte, and the related converter can reverse the calculation.
What are common names for Gigabyte and Kilobyte?
Gigabyte is shown as GB and may also be searched as gigabytes, gb. Kilobyte is shown as KB and may also be searched as kilobytes, kb.
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