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GB to MB Converter (Gigabytes to Megabytes)

1 gigabyte = 1,000 megabytes. To convert GB to MB, multiply by 1,000.

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100 GB = 100,000 MB

1 GB
1,000 MB
1 MB
0.001 GB
10 GB
10,000 MB
100 GB
100,000 MB

How to convert GB to MB

1 gigabyte equals 1,000 megabytes, so the conversion is a single multiplication.

MB = GB × 1,000

Example: 150 GB × 1,000 = 150,000 MB.

About the gigabyte and the megabyte

Gigabyte (GB)

A gigabyte (SI) is 1,000,000,000 bytes. Drive makers use this decimal definition.

Megabyte (MB)

A megabyte (SI) is 1,000,000 bytes. Photos and app downloads are usually measured in MB.

1 gigabyte in every data storage unit

Megabytes1,000 MB
Kilobytes1,000,000 kB
Terabytes0.001 TB
Bytes1,000,000,000 B
Bits8,000,000,000 bit
Petabytes0.000001 PB
Kibibytes976,562.5 KiB
Mebibytes953.674 MiB
Gibibytes0.9313 GiB
Tebibytes0.0009095 TiB
Kilobits8,000,000 kbit
Megabits8,000 Mbit
Gigabits8 Gbit

GB to MB FAQ

How many megabytes are in a gigabyte?

1 gigabyte = 1,000 megabytes.

How many gigabytes are in a megabyte?

1 megabyte = 0.001 gigabytes.

How do I convert GB to MB?

Use MB = GB × 1,000. For example, 10 GB = 10,000 MB.

Can I print this GB to MB chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.