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Data Storage Converter

Compare bits, bytes, file sizes, and device capacities using explicit decimal SI and binary IEC units without treating GB and GiB as interchangeable.

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ResultEnter a value to get started.

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Common data storage units

  • Bits (bit)1 B = 8 bit
  • Bytes (B)The unit this converter works in
  • Kilobytes (KB)1 KB = 1,000 B
  • Megabytes (MB)1 MB = 1,000,000 B
  • Gigabytes (GB)1 GB = 1,000,000,000 B
  • Terabytes (TB)1 TB = 1,000,000,000,000 B
  • Kibibytes (KiB)1 KiB = 1,024 B
  • Mebibytes (MiB)1 MiB = 1,048,576 B
  • Gibibytes (GiB)1 GiB = 1,073,741,824 B
  • Tebibytes (TiB)1 TiB = 1,099,511,627,776 B

Conversion formula

Every conversion here uses the published factor, not a rounded one.

Example: Gigabytes to Megabytes

1 GB = 1,000 MB

To convert gigabytes to megabytes, multiply by 1,000:

2 GB = 2,000 MB

Figures on this page are shown to seven significant digits. The converter keeps the full precision and rounds only what it displays.

Did you know?

A kilobyte and a kibibyte are not the same: KB means 1,000 bytes, KiB means 1,024. Drive manufacturers use the first, and most operating systems report the second.

That is the whole reason a "1 TB" drive shows up as about 931 GiB once it is plugged in. Nothing is missing — the two labels just count differently.

Frequently asked questions

Is 1 GB 1000 MB or 1024 MB?

1 GB is 1,000 MB in SI decimal units. 1 GiB is 1,024 MiB in binary units. Storage makers often use GB (1000), while OS tools may show GiB.

How many MB is 1 GB?

1 GB is 1,000 MB when both use SI prefixes. 1 GiB is 1,024 MiB when both use binary prefixes. Do not mix GB with MiB without converting.

How many GB is 1 TB?

1 TB is 1,000 GB in SI units. 1 TiB is 1,024 GiB in binary units. Drive labels usually mean TB as 1,000 GB.

Why does my 1 TB drive show less space?

Makers advertise 1 TB as 1,000,000,000,000 bytes. Many operating systems report that size in GiB, about 931 GiB. Formatting and recovery partitions also use space.

Is this data storage converter free with no sign-up?

Yes. This converter is free with no sign-up and no account. Use it as often as you need in your browser.