Digital Storage Converter

This page converts a digital storage from one unit into another. Every value passes through the byte, the SI unit digital storage is held in, and digital storage stays digital storage: a unit only converts inside its own dimension.

How do you convert digital storage between bytes, KB, MB and GB?

Pick the unit you have, pick the unit you want, and type the value. The page multiplies by the factor between the two and prints the arithmetic under the result, so the answer and the working are the same object.

1. Choose the unit your value is in. This page opens on the gigabyte.
2. Choose the unit you want it in. This page opens on the megabyte.
3. Type the value. The result and the factor behind it appear together.
4. Read the working. It converts into the byte first and out again, which is the same two lines you would write by hand.

Digital Storage Conversion Table

One row per unit this page offers, each measured against the byte. The last column says whether the factor is a definition or a reading of one.

Worked Examples

The question the bank ranked highest for this page, answered with the working.

Where These Factors Come From

Every number above is read from the knowledge base rather than computed for the page. These are the statements it holds for digital storage.

• One byte is 8 bits. Storage prefixes come in two families: kB, MB and GB are powers of ten, so 1 kB is 1000 B, while KiB, MiB and GiB are powers of two, so 1 KiB is 1024 B.
• A drive sold as 1 TB holds 1 000 000 000 000 bytes. An operating system that reports in tebibytes shows 0.909 TiB for the same drive: nothing is missing, the two prefixes count differently.
• This page scales a quantity of storage. Rewriting the same value in another base, such as binary or hexadecimal, is a different job with its own tools.
• How this page reports a result result in the target storage unit; decimal (kB) and binary (KiB) prefixes are listed as separate units

SI prefixes on this page

Binary prefixes on this page

KB or KiB?

Decimal prefixes step by a thousand and binary prefixes step by a power of two, so a kilobyte and a kibibyte are different sizes. They are listed here as separate units rather than two spellings of one, which is why a drive and an operating system can disagree about the same disk.

The rule behind this factor is the same for every unit - what k, M and m multiply by.

Frequently Asked Questions

Related Conversions

• Parts-per ratio sits in the same measurement group as digital storage - convert a concentration between ppm and ppb.
• Count sits in the same measurement group as digital storage - convert a count between dozens and gross.
• If you are measuring angle rather than digital storage, angles in degrees, radians and gradians instead.
• If you are measuring time rather than digital storage, time in seconds, hours, days and weeks instead.
• If you are measuring volume rather than digital storage, volume in litres, cubic metres and gallons instead.
• If you are measuring frequency rather than digital storage, frequency in hertz, kilohertz and megahertz instead.

The rest of the family sits on pick another quantity to convert.