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Megabytes to Gigabytes

1 megabyte = 0.001 gigabytes · 1 GB = 1,000 MB

1 megabyte = 0.001 gigabytes

How it’s calculated

GB = MB × 0.001

  • Multiply the value in megabytes by 0.001.
  • To go back, divide by 0.001 (or multiply by 1000).
  • 1 MB = 0.001 GB · 1 GB = 1,000 MB
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 MB = 8000000 bit and 1 GB = 8000000000 bit, so 1 GB = 1000 MB. Source: IEC 80000-13 (decimal and binary prefixes).

  2. Multiply by the factor written as a fraction

    Put MB in the denominator so it cancels, leaving GB.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 0.001 GB

1 MB in other units

Batch convert MB → GB
Results
  1. 1 MB = 0.001 GB
  2. 5 MB = 0.005 GB
  3. 10 MB = 0.01 GB
  4. 25 MB = 0.025 GB

Permanent link to this conversion

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Quick examples

  • 1 megabyte = 0.001 gigabytes
  • 5 megabytes = 0.005 gigabytes
  • 10 megabytes = 0.01 gigabytes
  • 25 megabytes = 0.025 gigabytes
  • 100 megabytes = 0.1 gigabytes

About these units

Megabyte (MB)

SI (metric)

Decimal megabyte: exactly 1 000 000 bytes.

1 MB = 8000000 bit

Source: IEC 80000-13 (decimal and binary prefixes)

Gigabyte (GB)

SI (metric)

Decimal gigabyte: exactly 10⁹ bytes. Drive makers use this; Windows reports GiB but labels them "GB".

1 GB = 8000000000 bit

Source: IEC 80000-13 (decimal and binary prefixes)

Megabytes to gigabytes conversion table

megabyte (MB) to gigabyte (GB)
Megabytes (MB)Gigabytes (GB)
0.1 MB0.0001 GB
0.5 MB0.0005 GB
1 MB0.001 GB
2 MB0.002 GB
3 MB0.003 GB
4 MB0.004 GB
5 MB0.005 GB
6 MB0.006 GB
7 MB0.007 GB
8 MB0.008 GB
9 MB0.009 GB
10 MB0.01 GB
15 MB0.015 GB
20 MB0.02 GB
25 MB0.025 GB
30 MB0.03 GB
40 MB0.04 GB
50 MB0.05 GB
75 MB0.075 GB
100 MB0.1 GB
250 MB0.25 GB
500 MB0.5 GB
1,000 MB1 GB

Related conversions

Frequently asked questions

How do I convert megabytes to gigabytes?

Use GB = MB × 0.001. Multiply the value in megabytes by 0.001.

How many gigabytes are in 1 megabyte?

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

How many megabytes are in 1 gigabyte?

1 gigabyte (GB) equals 1,000 megabytes (MB).

What is 10 MB in GB?

10 megabytes = 0.01 gigabytes.

What is a megabyte?

Decimal megabyte: exactly 1 000 000 bytes.

What is a gigabyte?

Decimal gigabyte: exactly 10⁹ bytes. Drive makers use this; Windows reports GiB but labels them "GB".

Formula: GB = MB × 0.001. Factors last reviewed 2026-10-27.