Data Storage Converter

Select the starting storage unit, enter a non-negative value, and choose the target unit. The result updates immediately and shows the active conversion factor. This tool keeps the same 1,024-byte basis across every unit pair.

Use swap to reverse the pair without retyping the value. For a single unit pair, jump to one of the dedicated converters linked at the end of this page. Each one adds worked examples, formulas, and FAQs specific to that conversion.

A byte contains eight bits. Each larger unit on this page contains 1,024 of the preceding byte unit, matching common binary file-size and memory calculations. This is the same 1,024 basis every conversion here uses.

Strict IEC names for these multiples are kibibyte, mebibyte, gibibyte, tebibyte, and pebibyte. IEC 80000-13:2008 defines them as distinct from the decimal SI prefixes kilo-, mega-, and giga-. The selector keeps familiar KB-to-PB labels while clearly stating the 1,024 basis. Enterprise storage and cloud-billing documentation increasingly cite the IEC names directly, so recognizing KiB and GiB is useful even outside this converter.

Every unit here is 1,024 times the one below it, so ordering never changes. Smallest to largest: bit, byte, kilobyte, megabyte, gigabyte, terabyte, petabyte. A gigabyte is always bigger than a megabyte, and a megabyte is always bigger than a kilobyte. That holds regardless of which decimal or binary convention a specific product uses.

The confusion usually isn't ordering. It's magnitude. Going from KB to MB is a 1,024x jump, but going from KB to GB is over a million times larger. That gap is why a 500 KB email attachment and a 500 GB drive aren't remotely comparable, despite sharing a number. IEC 80000-13:2008 fixes the naming ambiguity by giving binary multiples their own names: KiB, MiB, GiB. A 1,024-based and a 1,000-based gigabyte are never confused in writing this way. Marketing material can still use GB for both, but the IEC names remove the ambiguity wherever precision matters.

Convert the input to bytes, then divide by the target byte factor. Bits are divided by eight first, since eight bits make one byte here.

For example, 8,192 bits equal 1,024 bytes, which equals one displayed kilobyte here. The same base-byte path handles every larger pair, including the ones with their own dedicated converter below.

Storage size is a quantity, while transfer rate adds a time dimension such as bits per second. A 100 Mbps connection does not transfer 100 megabytes each second, even though the numbers look related.

Divide bits per second by eight to estimate bytes per second before accounting for protocol overhead. Real downloads run slower than the theoretical line rate. Treat a Mbps figure as a ceiling, not an estimate of actual file-transfer time.

These examples cover small payloads and general order-of-magnitude checks. Every result follows the stated 1,024-based convention this page uses throughout.

Use them to sanity-check a result before copying it. A 1 TB drive showing as roughly 1,048,576 MB in system properties is the binary convention at work. It is not a rounding error. Each unit pair also has its own dedicated converter, with more worked examples and a full formula walkthrough.

A plain text document may use only a few kilobytes, while a typical smartphone photo runs 3-5 MB after in-camera compression. Video files reach into the gigabytes because they store many frames plus an audio track. An hour of 4K footage commonly lands between 10 and 20 GB, depending on codec.

Compression, resolution, codec, and duration all affect the final size. Two files of the same length can differ by an order of magnitude. Use a file's actual reported size rather than a generic estimate when storage planning matters.

Most languages expose storage sizes as raw byte counts. Converting to a human-readable unit is a common utility function rather than a built-in. This comes up whenever an app displays a file size, upload progress, or disk-usage figure to a user. The snippet below follows this converter's 1,024-based convention.

Both snippets use the same 1,024 basis as this tool's own calculations, so results match exactly. Byte counts also show up outside file sizes. Base64 encoding inflates the original byte count by roughly a third. That is why an encoded payload always looks larger than the source data in ToolkitWizard's Base64 Encoder.

Fixed-length hash digests are another byte-size fact worth knowing ahead of time. A SHA-256 digest is always 32 bytes regardless of input size, which is easy to confirm with ToolkitWizard's Hash Generator. Knowing these fixed sizes helps when estimating storage for logs, tokens, or checksums in advance.

function bytesToUnit(bytes, unit) {
  const factors = { KB: 1024, MB: 1024 ** 2, GB: 1024 ** 3, TB: 1024 ** 4 };
  return bytes / factors[unit];
}
// bytesToUnit(5242880, 'MB') -> 5

def bytes_to_unit(byte_count, unit):
    factors = {"KB": 1024, "MB": 1024**2, "GB": 1024**3, "TB": 1024**4}
    return byte_count / factors[unit]
# bytes_to_unit(5242880, "MB") -> 5.0

Integer powers of 1,024 define every byte multiple here, so calculations remain deterministic and repeatable. There is no floating-point drift at the ranges this tool covers.

Inputs stay in your browser and are never uploaded, logged, or stored anywhere. Every conversion, including the ones on the dedicated pair converters linked below, runs entirely client-side.

This client-side approach matches the rest of ToolkitWizard's security toolkit. Tools like Encryption/Decryption and the JWT Decoder process sensitive values the same way, entirely in the browser. Nothing about a file size or a token ever needs to reach a server.

The main mistake is mixing decimal 1,000-based labels with binary 1,024-based calculations. Both conventions exist, so record which one a specification uses before comparing numbers across sources.

Another mistake is confusing lowercase b for bits with uppercase B for bytes. That single letter changes a quantity by a factor of eight. The gap is large enough to make a bandwidth estimate look correct when it is actually off by 8x. ISPs advertise connection speed in Mbps, or megabits. Operating systems report download progress in MB, or megabytes. That mismatch is the single most common source of this confusion.

This page covers every unit from bit to petabyte in one place. It also links to a dedicated page for each high-volume pair below. Each one adds its own worked examples and FAQs for that specific conversion.

Each dedicated converter keeps the same 1,024-byte basis as this hub, so a value converted here matches its dedicated page exactly. Most spoke pages also support swapping the two units without re-entering the value. Bookmark the pair you convert most often instead of returning to this broader hub every time.

Data storage is one of several measurement categories on ToolkitWizard. The same 100% client-side approach applies across volume, area, speed, length, weight, and temperature conversions. No input ever leaves your browser, regardless of which converter you use.

Developers working with CSS sizing or layout math also use the px-to-rem and line-height calculators on this site. Each one follows the same interaction pattern as this converter: pick a unit, enter a value, and read the result immediately.