Bytes to GB Converter

Convert bytes to GB and GiB in one step. It explains why a 1 GB file can show up as 0.93 GB on your computer.

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Gigabytes (1 GB = 1,000,000,000 bytes)
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Gibibytes (1 GiB = 1,073,741,824 bytes)
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Convert other units

How to use the Bytes to GB Converter

  1. Enter the size in Bytes.
  2. Press Convert.
  3. Read the GB value, with the GiB value underneath. Copy the one you need.

How it works

GB  = bytes ÷ 1,000,000,000
GiB = bytes ÷ 1,073,741,824
  • GB (gigabyte): the SI unit, 1,000³ bytes
  • GiB (gibibyte): the binary unit, 1,024³ bytes

At this size the gap between the two is about 7.4%, so 1 GB is only 0.93 GiB.

Examples

  • 4,294,967,296 bytes = 4.294967296 GB = 4 GiB.
  • 1,000,000,000 bytes = 1 GB = 0.9313225746 GiB.

Bytes to GB conversion table

BytesGBGiB
100,000,0000.10.09313225746
500,000,0000.50.4656612873
1,000,000,00010.9313225746
1,073,741,8241.0737418241
2,000,000,00021.862645149
4,294,967,2964.2949672964
8,000,000,00087.450580597
16,000,000,0001614.90116119
64,000,000,0006459.60464478
100,000,000,00010093.13225746

When to use gigabytes

Gigabytes measure RAM, phone storage, mobile data plans, games, and film downloads. At this size the decimal and binary values differ by about 7%, which is enough to notice when you compare a download size with the free space on a device.

The 4 GiB limit

4,294,967,296 bytes, the first example above, is 2^32 bytes. It is the most memory a 32-bit system can address. The FAT32 file system caps a single file at one byte less than this, which is why USB drives formatted as FAT32 refuse files of 4 GiB or larger.

Limitations

  • Negative values give an error.
  • Results are rounded to 10 significant digits for display.
  • Drive and phone storage figures are often rounded by the maker, so the exact byte count may differ slightly from the label.

Frequently asked questions

How many bytes are in a gigabyte?

1,000,000,000 in SI units. A gibibyte (GiB) is 1,073,741,824 bytes.

Why does a 1 GB file show as 0.93 GB?

Your system divides by 1,024³ instead of 1,000³, so it is really showing gibibytes.

Is RAM measured in GB or GiB?

RAM is built in powers of two, so "8 GB" of RAM is actually 8 GiB.

Often used together with the Bytes to GB.

  • Bytes to MB

    Converts bytes to megabytes (MB) and mebibytes (MiB).

  • Bytes to TB

    Converts bytes to terabytes (TB) and tebibytes (TiB).

  • Byte Converter

    Converts any data-size unit to all other units at once.