How Many KB in a MB?

There are 1,000 KB in a MB (decimal/SI standard) or 1,024 KiB in a MiB (binary standard). Most software uses binary, but storage makers use decimal.

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

Use the related converter below for custom values.

Formula

Answer: There are 1,000 KB in a MB (decimal/SI standard) or 1,024 KiB in a MiB (binary standard). Most software uses binary, but storage makers use decimal.

Example

Question: How many KB in a MB? Answer: There are 1,000 KB in a MB (decimal/SI standard) or 1,024 KiB in a MiB (binary standard). Most software uses binary, but storage makers use decimal.

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 Windows show different file sizes?

Windows uses binary (1 KB = 1,024 bytes) but labels it as KB. Mac uses decimal (1 KB = 1,000 bytes). This causes apparent size differences.

How many bytes in a KB?

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

How many KB in a GB?

There are 1,000,000 KB in 1 GB (decimal) or 1,048,576 KiB in 1 GiB (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.