Type a value, choose the units and get an instant answer. The table below the converter shows the same value in every data storage unit, and all factors use exact or internationally standard definitions.
How to convert data storage units
- Enter the value.
- Pick the unit to convert from and to (⇄ swaps them).
- Read the result, formula and the table of all units.
Data storage units
| Unit | Symbol | About |
|---|---|---|
| Bit | b | A single binary digit, 0 or 1. |
| Byte | B | Eight bits. One character of plain English text. |
| Kilobyte | KB | 1,000 bytes (SI). Windows shows 1,024 bytes as “KB”. |
| Megabyte | MB | 1,000,000 bytes (SI), or 1,048,576 bytes as shown by Windows. |
| Gigabyte | GB | 1,000 MB (SI). Mobile data and storage are sold in GB. |
| Terabyte | TB | 1,000 GB (SI). Hard drives are sold in TB. |
| Kibibyte | KiB | 1,024 bytes (binary). |
| Mebibyte | MiB | 1,024 KiB (binary). |
| Gibibyte | GiB | 1,024 MiB (binary). What Windows calls a GB. |
| Tebibyte | TiB | 1,024 GiB (binary). |
| Kilobit | kb | 1,000 bits. |
| Megabit | Mb | 1,000,000 bits. Internet speeds are quoted in megabits per second (Mbps). |
| Gigabit | Gb | 1,000 megabits. |
Why is my 1 TB drive only 931 GB?
Drive makers use decimal units (1 TB = 1,000,000,000,000 bytes) while Windows divides by 1,024 at each step and labels the result “GB”. 1012 ÷ 1,024³ = 931.3, so nothing is missing. macOS uses decimal units and shows the full 1 TB.
Popular data storage conversions
MB to GB · GB to MB · KB to MB · MB to KB · GB to TB · TB to GB · Bytes to KB · Mbps to MB/s · GB to GiB
Frequently asked questions
How accurate is the data storage converter?
It uses exact definitions where they exist and shows up to 10 significant figures, more than enough for everyday, school and engineering use.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested