Data Size Converter

Free Data Size Converter — Bytes to KB, MB, GB, TB

Convert between all data size units instantly. Supports both decimal (SI) and binary (IEC) standards.

Supported Units

**Decimal (SI):** Bits, Bytes, KB, MB, GB, TB, PB

**Binary (IEC):** KiB, MiB, GiB, TiB, PiB

SI vs IEC — Why It Matters

Drive manufacturers use SI units (1 TB = 1,000,000,000,000 bytes), but operating systems typically show IEC units (1 TiB = 1,099,511,627,776 bytes). This is why your "1 TB" drive shows as ~931 GB in your OS.

Common Conversions

| From | To | Result |

|------|-----|--------|

| 1 GB | MB | 1,000 MB |

| 1 GiB | MiB | 1,024 MiB |

| 1 GiB | GB | ≈ 1.074 GB |

| 1 TB | GiB | ≈ 931 GiB |

Use Cases

System Admin — Understand disk space discrepancies between labels and OS.

Network — Convert bandwidth (Gbps) to actual throughput (MB/s).

Cloud — Calculate storage costs with precise unit conversions.

Development — Size buffers, caches, and file limits accurately.