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GB to MB Converter

Type a value in gigabytes to get megabytes instantly, or type in the megabytes box to convert back. The formula with your number, related units and full tables are below.

GB
MB
 

Step-by-step calculation

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    How to use the GB to MB Converter

    1. Type a value in the Gigabytes box. The megabytes result appears instantly.
    2. Going the other way? Type in the Megabytes box, or press the ⇄ swap button.
    3. Set the precision with the decimal places menu.
    4. Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

    Gigabytes to megabytes formula

    MB = GB × 1000
    1. Take the value in gigabytes.
    2. Multiply it by 1000 (the number of megabytes in one gigabyte).

    Example: 1 GB × 1000 = 1,000 MB.

    Reverse formula (megabytes to gigabytes): GB = MB ÷ 1000. Example: 64,000 MB ÷ 1000 = 64 GB.

    The factor is a whole number (1000), so this one is easy to do in your head.

    GB to MB conversion table (1–100)

    Click any row to load it into the converter.

    Gigabytes to megabytes

    GigabytesMegabytes
    1 GB1,000 MB
    2 GB2,000 MB
    3 GB3,000 MB
    4 GB4,000 MB
    5 GB5,000 MB
    6 GB6,000 MB
    7 GB7,000 MB
    8 GB8,000 MB
    9 GB9,000 MB
    10 GB10,000 MB
    11 GB11,000 MB
    12 GB12,000 MB
    13 GB13,000 MB
    14 GB14,000 MB
    15 GB15,000 MB
    16 GB16,000 MB
    17 GB17,000 MB
    18 GB18,000 MB
    19 GB19,000 MB
    20 GB20,000 MB
    21 GB21,000 MB
    22 GB22,000 MB
    23 GB23,000 MB
    24 GB24,000 MB
    25 GB25,000 MB
    26 GB26,000 MB
    27 GB27,000 MB
    28 GB28,000 MB
    29 GB29,000 MB
    30 GB30,000 MB
    31 GB31,000 MB
    32 GB32,000 MB
    33 GB33,000 MB
    34 GB34,000 MB
    35 GB35,000 MB
    36 GB36,000 MB
    37 GB37,000 MB
    38 GB38,000 MB
    39 GB39,000 MB
    40 GB40,000 MB
    41 GB41,000 MB
    42 GB42,000 MB
    43 GB43,000 MB
    44 GB44,000 MB
    45 GB45,000 MB
    46 GB46,000 MB
    47 GB47,000 MB
    48 GB48,000 MB
    49 GB49,000 MB
    50 GB50,000 MB
    51 GB51,000 MB
    52 GB52,000 MB
    53 GB53,000 MB
    54 GB54,000 MB
    55 GB55,000 MB
    56 GB56,000 MB
    57 GB57,000 MB
    58 GB58,000 MB
    59 GB59,000 MB
    60 GB60,000 MB
    61 GB61,000 MB
    62 GB62,000 MB
    63 GB63,000 MB
    64 GB64,000 MB
    65 GB65,000 MB
    66 GB66,000 MB
    67 GB67,000 MB
    68 GB68,000 MB
    69 GB69,000 MB
    70 GB70,000 MB
    71 GB71,000 MB
    72 GB72,000 MB
    73 GB73,000 MB
    74 GB74,000 MB
    75 GB75,000 MB
    76 GB76,000 MB
    77 GB77,000 MB
    78 GB78,000 MB
    79 GB79,000 MB
    80 GB80,000 MB
    81 GB81,000 MB
    82 GB82,000 MB
    83 GB83,000 MB
    84 GB84,000 MB
    85 GB85,000 MB
    86 GB86,000 MB
    87 GB87,000 MB
    88 GB88,000 MB
    89 GB89,000 MB
    90 GB90,000 MB
    91 GB91,000 MB
    92 GB92,000 MB
    93 GB93,000 MB
    94 GB94,000 MB
    95 GB95,000 MB
    96 GB96,000 MB
    97 GB97,000 MB
    98 GB98,000 MB
    99 GB99,000 MB
    100 GB100,000 MB

    Megabytes to gigabytes

    MegabytesGigabytes
    1 MB0 GB
    2 MB0 GB
    3 MB0 GB
    4 MB0 GB
    5 MB0.01 GB
    6 MB0.01 GB
    7 MB0.01 GB
    8 MB0.01 GB
    9 MB0.01 GB
    10 MB0.01 GB
    11 MB0.01 GB
    12 MB0.01 GB
    13 MB0.01 GB
    14 MB0.01 GB
    15 MB0.01 GB
    16 MB0.02 GB
    17 MB0.02 GB
    18 MB0.02 GB
    19 MB0.02 GB
    20 MB0.02 GB
    21 MB0.02 GB
    22 MB0.02 GB
    23 MB0.02 GB
    24 MB0.02 GB
    25 MB0.03 GB
    26 MB0.03 GB
    27 MB0.03 GB
    28 MB0.03 GB
    29 MB0.03 GB
    30 MB0.03 GB
    31 MB0.03 GB
    32 MB0.03 GB
    33 MB0.03 GB
    34 MB0.03 GB
    35 MB0.04 GB
    36 MB0.04 GB
    37 MB0.04 GB
    38 MB0.04 GB
    39 MB0.04 GB
    40 MB0.04 GB
    41 MB0.04 GB
    42 MB0.04 GB
    43 MB0.04 GB
    44 MB0.04 GB
    45 MB0.04 GB
    46 MB0.05 GB
    47 MB0.05 GB
    48 MB0.05 GB
    49 MB0.05 GB
    50 MB0.05 GB
    51 MB0.05 GB
    52 MB0.05 GB
    53 MB0.05 GB
    54 MB0.05 GB
    55 MB0.06 GB
    56 MB0.06 GB
    57 MB0.06 GB
    58 MB0.06 GB
    59 MB0.06 GB
    60 MB0.06 GB
    61 MB0.06 GB
    62 MB0.06 GB
    63 MB0.06 GB
    64 MB0.06 GB
    65 MB0.07 GB
    66 MB0.07 GB
    67 MB0.07 GB
    68 MB0.07 GB
    69 MB0.07 GB
    70 MB0.07 GB
    71 MB0.07 GB
    72 MB0.07 GB
    73 MB0.07 GB
    74 MB0.07 GB
    75 MB0.07 GB
    76 MB0.08 GB
    77 MB0.08 GB
    78 MB0.08 GB
    79 MB0.08 GB
    80 MB0.08 GB
    81 MB0.08 GB
    82 MB0.08 GB
    83 MB0.08 GB
    84 MB0.08 GB
    85 MB0.09 GB
    86 MB0.09 GB
    87 MB0.09 GB
    88 MB0.09 GB
    89 MB0.09 GB
    90 MB0.09 GB
    91 MB0.09 GB
    92 MB0.09 GB
    93 MB0.09 GB
    94 MB0.09 GB
    95 MB0.1 GB
    96 MB0.1 GB
    97 MB0.1 GB
    98 MB0.1 GB
    99 MB0.1 GB
    100 MB0.1 GB

    Common values

    GigabytesMegabytesExample
    1 GB1,000 MB1 GB
    2 GB2,000 MBHD movie (approx.)
    4.7 GB4,700 MBDVD
    8 GB8,000 MB8 GB
    16 GB16,000 MB16 GB
    32 GB32,000 MB32 GB
    64 GB64,000 MB64 GB
    128 GB128,000 MB128 GB phone
    256 GB256,000 MB256 GB
    512 GB512,000 MB512 GB SSD
    1,000 GB1,000,000 MB1 TB

    About gigabytes and megabytes

    Gigabytes (GB). A gigabyte (GB) is 1,000,000,000 bytes (decimal). Windows reports sizes in binary gibibytes (GiB, 1,073,741,824 bytes) but labels them GB.

    Megabytes (MB). A megabyte (MB) is 1,000,000 bytes in the decimal SI system used by storage makers. The binary mebibyte (MiB) is 1,048,576 bytes.

    Frequently asked questions

    How many megabytes are in a gigabyte?

    One gigabyte equals 1,000 megabytes.

    How do you convert gigabytes to megabytes?

    Multiply the number of gigabytes by 1000. For example, 1 GB × 1000 = 1,000 MB.

    What is 64 gigabytes in megabytes?

    64 GB is 64,000 MB.

    How do I convert megabytes back to gigabytes?

    Divide by 1000, or press the ⇄ swap button above. For example, 64,000 MB ÷ 1000 = 64 GB.

    Why does my computer show a smaller size?

    Storage makers use decimal units (1 GB = 1,000,000,000 bytes) but Windows uses binary units (1 GiB = 1,073,741,824 bytes) while still writing GB. So a 1 TB drive shows as about 931 GB.

    Does this converter work offline?

    Once the page has loaded, the conversion runs entirely in your browser, so it keeps working without a connection. It is free and needs no sign-up.

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