Megabytes to Gigabytes Converter (mb to gb)
Enter a value in megabytes to see it in gigabytes instantly, or type in the gigabytes box to convert the other way. 1 megabyte = 0.001 gigabytes, and 1 gigabyte = 1,000 megabytes.
Divide megabytes by 1,000 for decimal gigabytes (used by storage makers and data plans), or by 1,024 for the binary gibibyte that Windows labels GB. 500 MB is 0.5 GB, and 1,536 MB is 1.5 GiB.
1 megabyte = 0.001 gigabytes. Formula: GB = MB × 0.001 (or MB ÷ 1,000)
1 megabyte in all data units
| Bits (bit) | 8,000,000 |
| Bytes (B) | 1,000,000 |
| Kilobytes (KB) | 1,000 |
| Gigabytes (GB) | 0.001 |
| Terabytes (TB) | 0.000001 |
| Kibibytes (KiB) | 976.5625 |
| Mebibytes (MiB) | 0.95367432 |
| Gibibytes (GiB) | 0.0009313226 |
| Tebibytes (TiB) | 0.0000009095 |
How to convert megabytes to gigabytes
GB = MB × 0.001
Multiply the number of megabytes by 0.001. To convert gigabytes back to megabytes, multiply by 1,000, or divide by 0.001.
Example: 5 megabytes × 0.001 = 0.005 gigabytes.
Megabytes to Gigabytes conversion table
| Megabytes | Gigabytes |
|---|---|
| 1 MB | 0.001 GB |
| 2 MB | 0.002 GB |
| 3 MB | 0.003 GB |
| 4 MB | 0.004 GB |
| 5 MB | 0.005 GB |
| 6 MB | 0.006 GB |
| 7 MB | 0.007 GB |
| 8 MB | 0.008 GB |
| 9 MB | 0.009 GB |
| 10 MB | 0.01 GB |
| 12 MB | 0.012 GB |
| 15 MB | 0.015 GB |
| 20 MB | 0.02 GB |
| 25 MB | 0.025 GB |
| 30 MB | 0.03 GB |
| 40 MB | 0.04 GB |
| 50 MB | 0.05 GB |
| 60 MB | 0.06 GB |
| 70 MB | 0.07 GB |
| 75 MB | 0.075 GB |
| 80 MB | 0.08 GB |
| 90 MB | 0.09 GB |
| 100 MB | 0.1 GB |
| 200 MB | 0.2 GB |
| 250 MB | 0.25 GB |
| 500 MB | 0.5 GB |
| 1,000 MB | 1 GB |
| Gigabytes | Megabytes |
|---|---|
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 3 GB | 3,000 MB |
| 4 GB | 4,000 MB |
| 5 GB | 5,000 MB |
| 6 GB | 6,000 MB |
| 7 GB | 7,000 MB |
| 8 GB | 8,000 MB |
| 9 GB | 9,000 MB |
| 10 GB | 10,000 MB |
| 12 GB | 12,000 MB |
| 15 GB | 15,000 MB |
| 20 GB | 20,000 MB |
| 25 GB | 25,000 MB |
| 30 GB | 30,000 MB |
| 40 GB | 40,000 MB |
| 50 GB | 50,000 MB |
| 60 GB | 60,000 MB |
| 70 GB | 70,000 MB |
| 75 GB | 75,000 MB |
| 80 GB | 80,000 MB |
| 90 GB | 90,000 MB |
| 100 GB | 100,000 MB |
| 200 GB | 200,000 MB |
| 250 GB | 250,000 MB |
| 500 GB | 500,000 MB |
| 1,000 GB | 1,000,000 MB |
About the megabyte and the gigabyte
A megabyte is one million bytes in the decimal (SI) system used by storage makers and network speeds. Operating systems sometimes report mebibytes (1,048,576 bytes) under the same label.
A gigabyte is one billion bytes. Phone storage, data plans and file downloads are quoted in gigabytes.
Frequently asked questions
How many gigabytes are in a megabyte?
There are 0.001 gigabytes in 1 megabyte. For any number of megabytes, multiply by 0.001.
How many megabytes are in a gigabyte?
1 gigabyte = 1,000 megabytes. To convert gigabytes to megabytes, multiply by 1,000 or divide by 0.001.
What is 5 megabytes in gigabytes?
5 megabytes = 0.005 gigabytes (5 × 0.001).
Is the mb to gb conversion exact?
Yes, once you know which system is in use. Decimal units (KB, MB, GB, TB) go up in steps of 1,000 as defined by the SI, and binary units (KiB, MiB, GiB, TiB) go up in steps of 1,024 as defined by the IEC. Storage makers and network speeds use decimal; Windows and some apps show binary values under decimal labels, which is why a 500 GB drive shows as about 465 GB.
Related calculators
Last updated . Formulas are shown on the page and checked against the worked example.
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.