/convert/gigabytes-to-megabytes/ Convert GB to MB instantly. Enter any value and get the result. Includes a conversion table and the exact formula. article Gb to Mb Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
💾 Data Storage

Gb to Mb Converter

Convert GB to MB instantly. Enter any value and get the result. Includes a conversion table and the exact formula.

Quick answer: To convert GB to MB, multiply by 1024. For example, 1 GB = 1024 MB. Use the calculator below for any value.
GB to MB
→
Common conversions
GB MB
Formula:

How to convert GB to MB

1

Enter your value

Type the number of gb you want to convert into the left box. The result in mb appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — MB to GB. Your current value carries across so you don't have to re-enter anything.

3

About GB and MB

In binary (used by operating systems), 1 GB = 1024 MB. Storage manufacturers often use 1 GB = 1000 MB, which is why drives appear smaller than advertised.

💡 Did you know?

1 GB = 1024 MB binary. Most operating systems and file managers use binary, despite labelling it as 'GB' not 'GiB'. This is the source of nearly all 'where did my storage go?' confusion.

📊 Common conversions at a glance
GB MB
0.5 512
1 1024
2 2048
4 4096
8 8192
16 1.638e+04
Reviewed for 2026. GB ↔ MB conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.