Data size converters
Data sizes use two number systems that look almost the same and disagree at every power: decimal (1 kB = 1,000 B, used by storage marketing and most modern OSes) and binary (1 KiB = 1,024 B, used by RAM, classic operating systems, and most file managers). Convertitive uses the decimal scale by default — that's how disk capacities are sold and what the IEC standard recommends — and offers the binary 'i' units (KiB, MiB, GiB) as opt-in non-core selections in the dropdown.
Popular data size conversions
All data size units
The 10 units below can be selected as source or target inside any data size converter.
- Bitsbit · Metric
- BytesB · Metric
- KilobyteskB · Metric
- MegabytesMB · Metric
- GigabytesGB · Metric
- TerabytesTB · Metric
- KibibytesKiB · Other
- MebibytesMiB · Other
- GibibytesGiB · Other
- TebibytesTiB · Other
Data size units in terms of the byte
Every data size unit on Convertitive is defined as an exact ratio of the byte (B), the reference unit for this category. The table below shows what one of each unit equals in bytes — the constant every converter on this page is built from.
| Unit | Symbol | 1 unit in bytes |
|---|---|---|
| Bits | bit | 0.125 B |
| Bytes | B | base unit |
| Kilobytes | kB | 1000 B |
| Megabytes | MB | 1000000 B |
| Gigabytes | GB | 1000000000 B |
| Terabytes | TB | 1000000000000 B |
| Kibibytes | KiB | 1024 B |
| Mebibytes | MiB | 1048576 B |
| Gibibytes | GiB | 1073741824 B |
| Tebibytes | TiB | 1099511627776 B |
To convert between any two units, Convertitive scales the input to bytes using these factors and then back out to the target unit — so every result on this page traces to a single, exact definition rather than a chained approximation. Pick any pair above to see the formula, a 50-row reference table, and worked examples.