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Megabytes to Gigabytes Converter MB → GB

1 megabyte (MB) = 0.001 gigabytes (GB). Type a value below — the conversion happens instantly, entirely on your device.

1 MB = 0.001 GB

512 megabytes = 0.512 gigabytes

512 × 0.001 = 0.512

1 MB equals 0.001 GB, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.
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How to convert megabytes to gigabytes

gigabytes = megabytes × 0.001 — multiply the megabyte value by 0.001.

Example: 512 MB = 0.512 GB.

To convert the other way: megabytes = gigabytes ÷ 0.001 — or use the dedicated GB to MB converter .

MB-to-GB uses the decimal standard: 1 GB = 1,000 MB, so 512 MB is 0.512 GB. If your operating system shows different numbers, it is reporting binary mebibytes/gibibytes (1 GiB = 1,024 MiB) while drive makers use decimal — both are "correct", they just use different standards.

Megabytes to Gigabytes conversion table

Megabytes (MB) Gigabytes (GB)
0.1 0.0001
0.25 0.00025
0.5 0.0005
1 0.001
2 0.002
3 0.003
4 0.004
5 0.005
6 0.006
7 0.007
8 0.008
9 0.009
10 0.01
15 0.015
20 0.02
25 0.025
30 0.03
40 0.04
50 0.05
75 0.075
100 0.1
250 0.25
500 0.5
1000 1

About the units

What is a megabyte?

A megabyte (MB) is 1,000,000 bytes (decimal standard). A smartphone photo is typically 2–5 MB; an MP3 song about 1 MB per minute.

What is a gigabyte?

A gigabyte (GB) is 1,000,000,000 bytes (decimal standard). Storage devices and mobile data plans are sold in gigabytes; an hour of HD streaming uses roughly 3 GB.

Frequently asked questions

How many gigabytes are in 1 megabyte?

1 megabyte (MB) = 0.001 gigabytes (GB).

What is the formula to convert megabytes to gigabytes?

gigabytes = megabytes × 0.001 — multiply the megabyte value by 0.001.

How do I convert MB to GB without a calculator?

Multiply by 0.001 for a close estimate. Exact factor: 1 MB = 0.001 GB.

Is this MB-to-GB converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.

Is 1 GB equal to 1000 MB or 1024 MB?

Under the SI decimal standard used by storage manufacturers, 1 GB = 1,000 MB. The 1,024 figure belongs to the binary units (1 GiB = 1,024 MiB) that operating systems traditionally reported. This page converts using the decimal standard.

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