Megabytes to Gigabytes Converter

This converter uses binary multiples, where 1 GB equals 1,024 MB. That matches how Windows, RAM specifications and most operating systems report sizes. Storage manufacturers and mobile data plans usually count in thousands, so the same size can look slightly different elsewhere.

1. 1

   Enter a value

   Type a number into the From box. It starts at 1 so you can see the basic ratio straight away. Thousands separators such as 1,250.5 are accepted.

2. 2

   Choose your units

   This page opens with its own units selected. Use either dropdown to pick any other unit in the category, or tap a unit in the all-units list to make it the target.

3. 3

   Read the result

   The answer updates as you type and the matching formula is shown underneath. There is no Convert button to press.

4. 4

   Swap, copy or clear

   Swap reverses the direction, Copy Result copies a line such as 1 km = 0.621371 mi, and Clear empties the input so you can start again.

Input

• Supported
  Whole numbers25
• Supported
  Decimal numbers2.75

  Use a dot as the decimal separator.

• Supported
  Negative numbers-40

  Calculated for every unit. Quantities such as length or weight are normally positive, while temperatures can be negative.

• Supported
  Thousands separators1,250.5

  Commas must group digits in threes. 1,234 is read as one thousand two hundred thirty-four.

• Supported
  Scientific notation1.5e6

  Useful for very large or very small values (1.5e6 = 1,500,000).

• Not supported
  Comma as decimal mark2,5

  Type 2.5 instead.

• Not supported
  Fractions1/2

  Type 0.5 instead.

• Not supported
  Numbers with unit text5 km

  Enter only the number and choose the unit from the dropdown.

Output

Results use US English formatting (1,234.56) and show up to 8 decimal places with trailing zeros removed. Very small results appear in scientific notation, such as 9.0949e-13, instead of rounding to zero.

Units available in this converter

• Byte (B)
• Kilobyte (KB)
• Megabyte (MB)
• Gigabyte (GB)
• Terabyte (TB)

Common values for the units currently selected above, in both directions.

Tips

• Divide by 1,000 for a quick estimate, or by 1,024 for the exact binary value.
• Bits are different from bytes: one byte is 8 bits, so a 100 Mb (megabit) file is about 12.5 MB.

• Uses binary multiples (1 KB = 1,024 bytes). Drive manufacturers use 1,000, so labelled capacities look smaller in an operating system.
• Labels follow KB, MB, GB and TB notation, not KiB, MiB, GiB or TiB. Bits and network speeds such as Mbps are not supported.
• Results show up to 8 decimal places. Values are not rounded during calculation, and a non-zero result that would display as 0 is shown in scientific notation.