What is the difference between a gigabyte and a gibibyte?

A gigabyte (GB) is 1,000,000,000 bytes (10^9). A gibibyte (GiB) is 1,073,741,824 bytes (2^30). They are distinct decimal and binary units.

How many kilobytes are in one gibibyte?

Exactly 1,073,741.824 decimal KB because 1 KB is 1,000 bytes. In binary units, 1 GiB equals 1,048,576 KiB.

Why does Windows show less space than the drive label?

Drive manufacturers use decimal GB (1,000,000,000 bytes), while Windows reports in binary GiB (1,073,741,824 bytes). A 1 TB drive (decimal) shows as about 931 GiB in Windows.

Does this converter use binary or decimal kilobytes?

It uses decimal kilobytes: 1 KB = 1,000 bytes. The binary 1,024-byte unit is the kibibyte (KiB).

Can I convert gibibytes back to kilobytes?

Yes. Use the swap button to reverse the direction, then enter your GiB value to get kilobytes.

Kilobytes to Gibibytes Converter

Convert decimal kilobytes (KB) to gibibytes (GiB): 1 GiB = 1,073,741.824 KB.

Enter Value

Kilobytes (KB)

Result

Enter a value to see the result

Common KB → GiB Reference

Kilobytes (KB)	Gibibytes (GiB)	Description
1,000	0.000931	1 MB
1,048.576	0.000977	1 MiB
1,073,741.824	1	1 GiB
2,147,483.648	2	2 GiB
4,294,967.296	4	4 GiB
8,589,934.592	8	8 GiB
17,179,869.184	16	16 GiB
34,359,738.368	32	32 GiB

Summary

Convert decimal kilobytes (KB) to gibibytes (GiB): 1 GiB = 1,073,741.824 KB.

How it works

Enter a kilobyte value in the input field.
The converter multiplies KB by 1,000 bytes and divides by 1,073,741,824 bytes per GiB.
The result updates instantly as you type.
Copy the result with one click or use the swap button to reverse the conversion.
View the full formula and a reference table of common sizes below.

Use cases

Convert RAM or cache sizes reported in KB to GiB for system specs.
Translate filesystem partition sizes from KB to GiB.
Verify storage calculations in operating systems that report in binary units.
Cross-check disk image sizes between tools that use different unit conventions.
Work with network file transfer sizes given in kilobytes.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu