Gigabytes to Kilobytes

About Gigabytes and Kilobytes

Gigabytes (GB): About one billion bytes; the dominant unit for consumer storage capacity. Common uses: RAM capacity, smartphone and SSD storage sizes, monthly cellular data plans, and movie file sizes.

Kilobytes (KB): 1,024 bytes (using binary IEC convention; some contexts use 1,000 bytes); the prefix 'kilo' here means 2^10 rather than 10^3. Common uses: Small file sizes (text documents, small images, configuration files), low-bandwidth network protocols, and embedded device memory.

How the conversion works

Digital storage uses binary (IEC) units throughout: 1 KB = 1,024 bytes, 1 MB = 1,024 KB = 1,048,576 bytes, 1 GB = 1,024 MB. Decimal-based variants (1 GB = 1,000,000,000 bytes) are not used here.

The exact relationship is kilobytes = gigabytes × 1048576, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.

When this conversion matters

Converting between gigabytes and kilobytes comes up wherever digital storage measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.