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Data storage converter

Convert digital storage and data sizes. 1 GB is 1,000 MB (decimal), while 1 GiB is 1,024 MiB (binary). 1 byte is 8 bits.

Result

1,000MB

1 GB = 1,000 MB

Same amount, two scales

1 GB

1,000 MB

Both bars show the same amount: 1 GB on top, 1,000 MB below.

Quick challenge

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Guess the conversion before you calculate it. How many can you get in a row?

How it works

Storage makers use decimal prefixes (1 TB = 10¹² bytes) while many operating systems count in binary units (1 TiB = 2⁴⁰ bytes) but still display “GB”. That is why a 1 TB drive appears as about 931 GB. Network speeds are in bits per second: divide Mbps by 8 to get MB/s.

All units compared

All units compared
UnitSymbolValue in bytes
bitbit0.125 B
kilobitkbit125 B
megabitMbit125,000 B
gigabitGbit125,000,000 B
byteB1 B
kilobytekB1,000 B
megabyteMB1,000,000 B
gigabyteGB1,000,000,000 B
terabyteTB1,000,000,000,000 B
petabytePB1E15 B
kibibyteKiB1,024 B
mebibyteMiB1,048,576 B
gibibyteGiB1,073,741,824 B
tebibyteTiB1,099,511,627,776 B

Frequently asked questions

Why does my 1 TB drive show only 931 GB?

The drive has 10¹² bytes. Your computer divides by 1,024³ instead of 1,000³, which gives about 931 binary gigabytes (GiB).

How long does it take to download 1 GB at 100 Mbps?

100 Mbps is 12.5 MB/s, so 1 GB (1,000 MB) takes about 80 seconds, ignoring network overhead.

How many megabytes are in 1 gigabyte?

1 gigabyte = 1,000 megabytes. The other way round, 1 megabyte = 0.001 gigabytes.

How many gigabytes are in 1 megabyte?

1 megabyte = 0.001 gigabytes. The other way round, 1 gigabyte = 1,000 megabytes.

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