Data Size Converter

Free data size converter — bytes, KB, MB, GB, TB, PB. Both decimal (1000) and binary (1024 / KiB, MiB) units. Bandwidth, file sizes, storage.

Runs in your browserUpdated Apr 30, 2026

From

Bit

8000000000 bit

Byte

1000000000 B

Kilobyte (10³)

1000000 KB

Gigabyte (10⁹)

1 GB

Terabyte (10¹²)

0.001 TB

Petabyte (10¹⁵)

0.000001 PB

Kibibyte (2¹⁰)

976562.5 KiB

Mebibyte (2²⁰)

953.6743164 MiB

Gibibyte (2³⁰)

0.9313225746 GiB

Tebibyte (2⁴⁰)

0.0009094947018 TiB

Frequently asked questions

›Why does my 1 TB hard drive show as 931 GB?

Drive vendors use decimal terabytes (10¹² bytes) but operating systems show binary (2⁴⁰ bytes, properly called TiB). 1 TB = 0.909 TiB.

›What's the difference between MB and MiB?

1 MB = 1,000,000 bytes (decimal). 1 MiB = 1,048,576 bytes (binary). They differ by about 5%, growing with every prefix.

›How many bits in a byte?

Almost always 8. The convention is so universal that 'octet' (= 8 bits) is sometimes used in network specs to be unambiguous.

›Bytes to gigabytes — how?

Divide by 1,000,000,000 for decimal GB or by 1,073,741,824 for binary GiB. Or type your value and pick the units.

›Is the converter free?

Yes — free, no ads, runs in your browser.