TontonTools

Digital Storage Converter

Convert bytes, KB, MB, GB, TB — plus binary KiB, MiB and GiB.

100% Free No signup Privacy-friendly Unit Converters
Updated Sep 2026

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How to use Digital Storage Converter

  1. Type the size in the “From” field — for example 512 for 512 GB.
  2. Select the unit you have (Byte, Megabyte, Gibibyte, bit…) in the first dropdown.
  3. Select the unit you want in the second dropdown — the converted size appears instantly.
  4. Press the swap button to reverse the conversion, e.g. GB → GiB becomes GiB → GB.

What is Digital Storage Converter?

A digital storage converter translates data sizes between units — megabytes to gigabytes, bytes to bits, or gigabytes to the binary gibibytes your operating system may actually be reporting. The core unit is the byte (8 bits); decimal units then scale by 1,000 (1 KB = 1,000 B; 1 MB = 1,000,000 B) while binary units scale by 1,024 (1 KiB = 1,024 B; 1 MiB = 1,048,576 B).

That decimal-versus-binary split is the source of the classic mystery: drive makers sell decimal terabytes, but Windows reports binary units — so a “1 TB” drive shows up as roughly 931 “GB” (properly GiB). Neither number is wrong; they are different units, and this converter handles both families.

About the Digital Storage Converter

This converter covers bits, bytes, and both unit families: decimal KB, MB, GB, TB and binary KiB, MiB, GiB — converting between any pair instantly as you type.

Practical jobs it solves: working out how many 4 MB photos fit on a 128 GB card (about 32,000), converting an internet speed of 100 megabits per second into real download throughput (12.5 MB/s), checking why a 500 GB SSD shows 465 GiB in Windows, or converting a database dump of 2,300,000,000 bytes into readable gigabytes (2.3 GB).

Anchors: 8 bits = 1 byte, 1 GB = 1,000 MB, 1 GiB = 1,024 MiB = 1.0737 GB. All conversions are computed exactly, in your browser.

Frequently Asked Questions

The drive is 1 TB in decimal units (1,000,000,000,000 bytes), but Windows divides by 1,024³ and reports gibibytes: 1 TB = 931.32 GiB. Nothing is missing — they are different units with the same byte count.
A byte is 8 bits, so a 100 Mbps internet connection downloads at most 12.5 MB per second. ISPs advertise bits; file sizes use bytes — an eightfold difference people trip over constantly.
Officially 1 KB = 1,000 bytes and 1 KiB = 1,024 bytes. Historically “KB” was used loosely for 1,024; modern standards (and this tool) keep the two families separate so you can convert either way.
Roughly 250 smartphone photos at 4 MB each, or about 250 MP3s at 4 MB (roughly 4 hours of 320 kbps audio). A 4K movie, by contrast, can eat 15–50 GB on its own.
Petabyte (1,000 TB), exabyte, zettabyte, yottabyte — each 1,000× the last. Data centers speak in petabytes; global internet traffic is measured in zettabytes per year.

Learn more

KB, MB, GB and TB: How to Convert Data Storage Units

Why does a "1 TB" drive show less space? Here is how data units work, and the KB/MB/GB/TB confusion explained.

Read the guide

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