How many megabytes are in one gibibyte?

1 GiB = 1,073,741,824 bytes. Dividing by 1,000,000 gives 1,073.741824 MB. So 1 GiB equals approximately 1,073.74 MB.

What is the difference between MB and MiB?

A megabyte (MB) is a decimal unit: 1 MB = 1,000,000 bytes. A mebibyte (MiB) is a binary IEC unit: 1 MiB = 1,048,576 bytes. The 4.86% difference causes common confusion when reading storage values across different tools.

What is a gibibyte (GiB)?

A gibibyte (GiB) is a binary storage unit defined by IEC 80000-13. 1 GiB = 2^30 bytes = 1,073,741,824 bytes. Operating systems like Linux, macOS, and Windows use GiB internally but may display it as "GB," causing apparent discrepancies with manufacturer-listed capacities.

Why does my OS show less space than the drive label?

Drive manufacturers use decimal GB (1,000,000,000 bytes per GB), while operating systems report capacity in binary GiB (1,073,741,824 bytes per GiB). A 500 GB drive holds 500,000,000,000 bytes, which equals about 465.66 GiB — so Windows or Linux shows roughly 465 GB.

Does this converter use binary or decimal megabytes?

Decimal megabytes: 1 MB = 1,000,000 bytes. This matches the SI standard used by storage manufacturers, network speed ratings, and most file size displays.

Megabytes to Gibibytes Converter

Name: Megabytes to Gibibytes Converter
Availability: InStock
Author: Nham Vu

Convert megabytes (MB, decimal) to gibibytes (GiB, binary IEC). 1 MB = 1,000,000 bytes; 1 GiB = 1,073,741,824 bytes — so 1,000 MB ≈ 0.9313 GiB.

Enter Value

Megabytes (MB)

Quick presets

Result

Enter a value to see the result

Common MB → GiB Reference

Megabytes (MB)	Gibibytes (GiB)	Notes
1	0.000931323	1 MB
100	0.093132	100 MB
500	0.465661	500 MB file
1,000	0.931323	1 GB decimal ≈ 0.931 GiB
1,073.741824	1	Exactly 1 GiB
4,096	3.814697	Common partition size
8,192	7.629395	8,192 MB
16,000	14.901161	16 GB decimal drive

Summary

Convert megabytes (MB, decimal) to gibibytes (GiB, binary IEC). 1 MB = 1,000,000 bytes; 1 GiB = 1,073,741,824 bytes — so 1,000 MB ≈ 0.9313 GiB.

How it works

Enter a megabyte (MB) value in the input field.
The converter multiplies by 1,000,000 to get the raw byte count.
It then divides the byte count by 1,073,741,824 (2^30) to get gibibytes (GiB).
Use the swap button to reverse direction and convert GiB back to MB.
Copy the result with one click or view the reference table for common sizes.

Use cases

Convert file sizes reported in MB to GiB for operating systems that use binary units.
Understand why a 500 MB file appears as ~0.466 GiB in a binary file manager.
Translate storage quotas between decimal MB (provider spec) and binary GiB (OS display).
Verify disk partition sizes when tools report in different unit conventions.
Cross-check backup or transfer sizes across software with mixed unit systems.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu