Bytes Converter
Convert between bytes, KB, MB, GB, TB, and PB. Supports both binary (1024) and decimal (1000) standards.
Binary vs Decimal: Binary (base-1024) is used by operating systems. Decimal (base-1000) is used by storage manufacturers.
Reference Table
| Unit | Binary (IEC) | Decimal (SI) |
|---|---|---|
| 1 KB | 1,024 bytes | 1,000 bytes |
| 1 MB | 1,048,576 bytes | 1,000,000 bytes |
| 1 GB | 1,073,741,824 bytes | 1,000,000,000 bytes |
| 1 TB | 1,099,511,627,776 bytes | 1,000,000,000,000 bytes |
| 1 PB | 1,125,899,906,842,624 bytes | 1,000,000,000,000,000 bytes |
Frequently Asked Questions
Binary uses 1024 as the multiplier (used by operating systems), while decimal uses 1000 (used by hard drive manufacturers). This is why a "500 GB" drive shows as ~465 GB in Windows.
Hard drive manufacturers use decimal (1000-based) measurements, while your operating system uses binary (1024-based). A 1TB drive is 1,000,000,000,000 bytes, which equals about 931 GiB in binary.
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