Kilobytes (KB) to Gigabytes (GB) Converter

File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Kilobyte is 10³ bytes and 1 Gigabyte is 10⁹ bytes. Divide one by the other and you get the ratio between the two units: 10³ ÷ 10⁹ = 10⁻⁶.

Kilobyte is the smaller unit, so you divide. One KB is only 0.000001 of a GB, which means the decimal point moves 6 places to the left.

On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 2 steps apart. Every step is a factor of 1,000, so 2 steps means 1,000 multiplied by itself 2 times, which is 10⁶.

Need the other direction? Open the GB to KB converter.

A kilobyte is 1,000 bytes, roughly a short paragraph of text. Kilobytes are the everyday unit for small files such as text documents, icons, config files and scripts, and for tight limits like form uploads or email signatures.

A gigabyte is 1,000 megabytes, about 250 photos at 4 MB each. Gigabytes are the language of phone storage, RAM, mobile data plans, game installs and USB sticks.

Going from kilobytes up to gigabytes always gives a smaller number, because you are counting in bigger chunks. People do it to make a long number readable, or to compare a file with the size of a drive or a plan.