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Kilobytes to gigabytes

Multiply kilobytes by 0.000001 to get gigabytes.

1 kB = 0.000001 GBIEC 80000-13
kB
0.1GB

100,000 kB = 0.1 GB

How to convert kilobytes to gigabytes

The gigabyte is one billion bytes (10⁹ B) in the decimal convention. The kilobyte is one thousand bytes (10³ B) in the decimal (SI) convention.

Worked example — 100,000 kB: 100,000 × 0.000001 = 0.1 GB.

Kilobytes to gigabytes table

Common conversions. The reverse table is on gigabytes to kilobytes.
KilobytesGigabytes
1,000 kB0.001 GB
5,000 kB0.005 GB
10,000 kB0.01 GB
50,000 kB0.05 GB
100,000 kB0.1 GB
500,000 kB0.5 GB
1,000,000 kB1 GB
2,000,000 kB2 GB
5,000,000 kB5 GB

Reverse and related

About kilobytes and gigabytes

Kilobyte (kB)

1 kB = 0.000001 GB

Definition. One thousand bytes (10³ B) in the decimal (SI) convention

History and origin

The kilobyte took the metric kilo prefix for a thousand, but in computing it was often used loosely for 1024 bytes. The IEC later defined the kibibyte for the binary value to remove the ambiguity.

Current use

Kilobytes measure small files and text documents; in strict decimal use a kilobyte is exactly one thousand bytes.

Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes

Gigabyte (GB)

1 GB = 1,000,000 kB

Definition. One billion bytes (10⁹ B) in the decimal convention

History and origin

The gigabyte uses the metric giga prefix for a billion bytes. Drive makers label capacity in decimal gigabytes, while operating systems often report the binary gibibyte, which is why sizes seem to disagree.

Current use

Gigabytes measure phone storage, memory and mobile data plans.

Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes

Where people use this

Kilobytes: small files, documents. Gigabytes: phone storage, mobile data plans. 1 000 000 kB is 1 GB (decimal).

How we know this is right
The factor is fixed by the standards that define the units, not chosen — so it is exact, not a measurement:
1 GB = 1,000,000 kB, so 1 kB = 1 ÷ 1,000,000 = 0.000001 GB.

Every value is carried to full double precision; the display is rounded.

Both units are defined in IEC 80000-13 (quantities and units — information science); NIST on binary prefixes.

Questions people ask

How many GB is 1,000,000 kB?

1,000,000 kilobytes is exactly 1 GB in the decimal convention.

How many GB is 500,000 kB?

500,000 kB is 0.5 GB.

How many kB in a GB?

One gigabyte is 1,000,000 kilobytes.

All kilobyte conversions