Kilobytes to Gigabytes Converter

About the kb to gb calculation

One kilobyte is exactly 0.000001 gigabytes, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Decimal kilobyte — 1,000 bytes. Windows and macOS often mean 1,024 when they write "KB". Decimal gigabyte. This is why a "1 TB" drive shows as roughly 931 GB in your operating system.

Formula

GB = KB × 0.000001

1 KB = 0.000001 GB
1 GB = 1,000,000 KB

Worked example

To convert 500 KB, multiply by 0.000001: 500 × 0.000001 = 0.0005 GB.

Frequently asked questions

How many gigabytes are in a kilobyte?

There are 0.000001 gigabytes in one kilobyte. To convert any amount, multiply the number of kilobytes by 0.000001.

How do I convert gigabytes back to kilobytes?

Divide instead of multiplying, or equivalently multiply by 1,000,000. One gigabyte is 1,000,000 kilobytes.

Is this conversion exact?

Yes, provided both sides use the same convention. Decimal units (KB, MB, GB) are powers of 1,000 and binary units (KiB, MiB, GiB) are powers of 1,024. Both are exact — the confusion comes from software labelling binary values with decimal names.

Where is each of these units used?

Kilobytes: decimal kilobyte — 1,000 bytes. Windows and macOS often mean 1,024 when they write "KB". Gigabytes: decimal gigabyte. This is why a "1 TB" drive shows as roughly 931 GB in your operating system.

Sources

• IEC 80000-13 — binary and decimal prefixes for information units