How many kibibytes are in a gigabyte?

1 GB equals 976,562.5 KiB. A gigabyte is 1,000,000,000 bytes (SI), and a kibibyte is 1,024 bytes (IEC binary), so the conversion is 1,000,000,000 ÷ 1,024 = 976,562.5.

What is the difference between KiB and KB?

A kilobyte (KB) is 1,000 bytes under the SI decimal standard. A kibibyte (KiB) is 1,024 bytes under the IEC binary standard. For 1 GB of data: that is 1,000,000 KB but only 976,562.5 KiB, a difference of about 2.4%.

Why is 1 GB not a round number in KiB?

Because GB uses powers of 10 (1,000^3 = 1,000,000,000 bytes) while KiB uses powers of 2 (2^10 = 1,024 bytes). Dividing a power of 10 by a power of 2 rarely produces a whole number — 976,562.5 is exact, not an approximation.

Does this tool also convert gibibytes (GiB) to kibibytes?

The input treats GB as SI gigabytes (1,000,000,000 bytes). If your value is GiB (binary, 2^30 bytes), note that 1 GiB = 1,048,576 KiB exactly. Use a dedicated GiB converter for that path.

Is the result accurate for large values like 1,000 GB?

Yes. The tool uses JavaScript 64-bit floating-point arithmetic. For 1,000 GB the result is 976,562,500 KiB, which is exact with no rounding error at that scale.

Gigabytes to Kibibytes Converter

Enter gigabytes and instantly get the equivalent in kibibytes (binary IEC) and kilobytes (SI decimal) with a step-by-step breakdown.

Gigabytes Input

Amount in Gigabytes (GB)

Quick values

Binary IEC: 1 GB = 976,562.5 KiB
SI decimal: 1 GB = 1,000,000 KB

Binary IEC — KiB

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Enter a value to see the calculation.

SI Decimal — KB

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Enter a value to see the calculation.

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Summary

This tool converts gigabytes (GB) to kibibytes (KiB) using the cross-standard formula: 1 GB = 1,000,000,000 bytes ÷ 1,024 = 976,562.5 KiB. Hard drive manufacturers label capacity in SI gigabytes (powers of 1,000), while operating systems measure storage in binary kibibytes (powers of 1,024). The 2.4% gap between GB and GiB is why a "256 GB" drive shows a different value when broken down to KiB in a system tool. This converter also shows the SI kilobytes (KB) result so you can compare both standards side by side.

How it works

Enter the number of gigabytes in the input field.
Binary IEC result: multiply GB by 976,562.5 (= 1,000,000,000 ÷ 1,024) to get kibibytes.
SI decimal result: multiply GB by 1,000,000 to get kilobytes (for reference).
The step-by-step panel shows each multiplication stage for the binary path.
Use the copy buttons to grab either result to your clipboard.

Use cases

Check how many binary kibibytes fit inside a gigabyte-labeled storage device.
Convert file size limits given in GB to the KiB values a kernel or filesystem reports.
Translate network quota figures from gigabytes to kibibytes for provisioning scripts.
Reconcile OS disk-usage tools that report in KiB against hardware specs in GB.
Verify embedded-system memory budgets stated in GB against KiB-addressable regions.
Cross-check cloud storage billing in GB against the KiB counters in monitoring dashboards.

Frequently Asked Questions

Last updated: 2026-06-19 · Reviewed by Nham Vu