Free Data Storage Converter

The Data Storage Converter is a free online tool that converts between bytes, kilobytes, megabytes, gigabytes, terabytes, and other digital storage units.

Yes, it is completely free with no registration required. All conversions happen client-side in your browser.

Yes, the Data Storage Converter handles both binary (KiB, MiB, GiB) and decimal (KB, MB, GB) storage unit standards.

Yes, the Data Storage Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Data Storage Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Data Storage Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

Nothing is missing — it is a units mismatch. Drive makers advertise capacity in decimal (SI) units, where 1 TB equals exactly 1,000,000,000,000 bytes. Most operating systems, however, report space in binary (IEC) units based on powers of 1,024, even though they label them "GB." Dividing that same 1,000,000,000,000 bytes by 1,073,741,824 (one gibibyte) gives roughly 931, so the drive shows about 931 GiB of usable space. The gap is built into the math, not lost storage, and it grows with size: around 2.4% at the kilobyte level, 7.4% at gigabytes, and 10% at terabytes. Paste your drive's advertised size into this converter and use the SI-to-IEC button to see the exact figure your file manager will display.

They count bytes using different bases. A megabyte (MB) is a decimal SI unit equal to 1,000,000 bytes — one thousand kilobytes of 1,000 bytes each. A mebibyte (MiB) is a binary IEC unit equal to 1,048,576 bytes, or 1,024 kibibytes of 1,024 bytes each. That makes a MiB about 4.86% larger than a MB. The distinction matters because storage and networking specs often use decimal megabytes while RAM and operating systems use binary mebibytes, even when both are loosely written "MB." The same pattern repeats for KB versus KiB, GB versus GiB, and TB versus TiB, with the gap widening at each tier. This converter lists decimal and binary units separately and shows the plain-language formula, so you can convert MB to MiB and see exactly how the byte counts differ.

Transfer time depends on file size and the real throughput of your link, not the advertised headline number. The key trick is that connection speeds are measured in bits per second while file sizes are in bytes, and there are 8 bits in a byte. So a 100 Mbps line moves at most about 12.5 MB per second, meaning a 1 GB file takes roughly 80 seconds under ideal conditions. Real transfers run slower because of protocol overhead, latency, and shared bandwidth. This tool's built-in transfer-time calculator does the bit-to-byte conversion for you: enter a file size and a speed in Mbps, and it estimates the time, the throughput in MB/s, and a figure that adds about 10% real-world overhead. Speed presets for 3G, 4G LTE, 5G, DSL, cable, and gigabit fiber let you compare scenarios instantly.

There are exactly 8 bits in 1 byte. A bit is the smallest unit of digital information, holding a single 0 or 1, while a byte groups 8 bits together and is the standard unit for measuring file and storage sizes. This is why bit-based and byte-based figures rarely line up directly: to convert bits to bytes you divide by 8, and to convert bytes to bits you multiply by 8. The same factor applies to larger units — a megabit (Mb) is one-eighth of a megabyte (MB), which is why internet speeds quoted in megabits look much larger than the megabyte-per-second download rates you actually see. This converter includes a full bits family (b, Kb, Mb, Gb, and up) alongside byte units, so you can convert between bits and bytes in either direction without doing the multiply-or-divide-by-8 step yourself.

Above the terabyte, units keep climbing by the same factor at each step. In decimal SI order it goes terabyte (TB), petabyte (PB), exabyte (EB), zettabyte (ZB), and yottabyte (YB), each 1,000 times larger than the last. The binary IEC equivalents follow the same ladder with a 1,024 multiplier: tebibyte (TiB), pebibyte (PiB), exbibyte (EiB), and beyond. A petabyte is 1,000 TB, an exabyte is 1,000 PB, and a yottabyte — one of the largest named units in common reference — is a septillion bytes, far beyond anything a single device holds today. These huge units mostly describe data centers and global internet traffic rather than personal drives. This converter covers the full range from bits up to yottabytes in both systems, so you can express any value at whatever scale you need.