Memory / Storage Converter

About this tool

Convert between bits, nibbles, bytes and their multiples in two families. The decimal (SI) units kilo, mega, giga, tera and peta use powers of 1,000, so 1 kilobyte is 1,000 bytes; this is how drive makers and network speeds are labeled. The binary (IEC) units kibi, mebi, gibi, tebi and pebi (KiB, MiB, GiB, TiB, PiB) use powers of 1,024, so 1 KiB is 1,024 bytes and 1 GiB is 1,073,741,824 bytes; this is what operating systems like Windows usually display when they write GB. A byte is 8 bits and a nibble 4 bits. Capital B means bytes and lowercase b means bits, and the result is labeled with that symbol.

How to use it

1. Type the value to convert.
2. Choose the From and To units.
3. Read the result, which updates as you type.
4. Use Swap to reverse the units or Copy to copy the result.

Example

256 gigabyte to megabyte

256000 MB

Common problems

My file size differs from what the OS shows

Drive makers use 1,000-based units (GB) while many systems show 1,024-based ones. Convert from GB to GiB here: 1 GB is about 0.93 GiB.

Mixing up bits and bytes

Internet speeds are in bits (Mb), file sizes in bytes (MB). Divide megabits by 8 to get megabytes.

KiB or MB: which one do I pick?

Use KiB, MiB, GiB and TiB for 1,024-based sizes and kB, MB, GB and TB for 1,000-based sizes. They are listed after the SI units.