What is a gibibyte (GiB)?

A gibibyte is exactly 2^30 bytes, or 1,073,741,824 bytes. The name comes from the IEC 80000-13 standard to distinguish binary units (powers of 1024) from SI decimal units (powers of 1000). Operating systems like Linux, macOS, and Windows use GiB when displaying storage or memory sizes.

How many bits are in a gibibyte?

Exactly 8,589,934,592 bits. This is 1 GiB × 1,073,741,824 bytes/GiB × 8 bits/byte.

What is the difference between a GiB and a GB?

A GB (gigabyte) is 1,000,000,000 bytes under the SI decimal standard. A GiB (gibibyte) is 1,073,741,824 bytes under the IEC binary standard — about 7.37% larger. Storage manufacturers use GB while operating systems report GiB, which is why a "1 TB" drive appears as ~931 GiB in your OS.

Why would I work with bits instead of bytes?

Network speeds, serial protocols, and many hardware specifications use bits as the base unit (e.g., Gbps, Mbps). Converting these to GiB is common when estimating how long a transfer takes or how much storage a stream will consume.

Is this converter accurate for very large bit counts?

Results use JavaScript 64-bit floating-point, accurate to about 15–16 significant digits. For values above roughly 9 × 10^15 bits (about 1 million TiB), precision may decrease due to floating-point limits — well beyond any practical use case.

Bits to Gibibytes Converter

Enter a bit count and instantly get the equivalent in gibibytes (GiB), the binary unit where 1 GiB = 8,589,934,592 bits.

Input

Number of bits

Conversion formula

GiB = bits ÷ 8,589,934,592

(1 GiB = 2³⁰ bytes = 8 × 1024³ bits)

Result

Enter a bit count and click Convert to see the result.

Reference Table — Common Bit Counts to GiB

Bits	Bytes	MiB	GiB

Copied!

Summary

This tool converts a raw bit count into gibibytes (GiB) using the IEC binary standard. One gibibyte equals exactly 2^30 bytes — that is 1,073,741,824 bytes or 8,589,934,592 bits. The binary base-1024 standard is used by operating systems and RAM specifications, which is why a GiB differs from a GB (1,000,000,000 bytes under the SI decimal standard). Use this converter when working with memory sizes, binary file formats, or any context where the OS-reported unit matters.

How it works

Enter any number of bits in the input field.
The converter divides by 8,589,934,592 (which is 8 × 1024³) to get gibibytes.
Results update instantly; press Enter or click Convert.
The formula section shows the exact calculation for your input.
The reference table at the bottom lists common bit counts and their GiB equivalents.

Use cases

Convert network throughput measurements (bits) to GiB for storage planning.
Calculate how many GiB a binary protocol field covers given a bit-width.
Cross-check RAM or SSD specs reported in bits against the GiB OS display.
Verify binary file sizes when tools output raw bit counts.
Understand the difference between GiB (binary) and GB (decimal) for a given bit value.

Frequently Asked Questions

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