How Many MB in a GB?

There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.

How many mb in a gb? — see the answer and conversion table below.

Use the related converter below for custom values.

Formula

Answer: There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.

Example

Question: How many MB in a GB? Answer: There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.

How to Use

  1. Read the direct answer at the top of the page
  2. Check the conversion table for common values
  3. Use the related converter for custom values
  4. Browse the FAQ for common follow-up questions

Frequently Asked Questions

Why does my 1TB drive show only 931 GB?

Drive makers use decimal (1 TB = 1,000,000,000,000 bytes), but Windows uses binary (1 TiB = 1,099,511,627,776 bytes). 1TB / 1.0995 = 931 GiB.

What is the difference between MB and MiB?

MB (megabyte) = 1,000,000 bytes (decimal). MiB (mebibyte) = 1,048,576 bytes (binary, 2^20). Windows labels MiB as MB, causing confusion.

How many KB in a MB?

There are 1,000 KB in 1 MB (decimal) or 1,024 KiB in 1 MiB (binary).

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Author: Calczy Editorial Team Reviewed by: Calczy Editorial Team Last updated: 2026-09-16

This page was reviewed for accuracy by the Calczy editorial team. Our editorial process follows our editorial policy to ensure reliable, up-to-date conversion tools and reference content.