File Size & Transfer Calculator
Convert between bytes, KB/KiB, MB/MiB and more, and estimate download time at any speed.
Decimal (SI) — used by drive makers
| B | 4.700e+9 |
|---|---|
| KB | 4.700e+6 |
| MB | 4,700 |
| GB | 4.7 |
| TB | 0.005 |
| PB | 4.700e-6 |
Binary (IEC) — used by Windows and RAM
| B | 4.700e+9 |
|---|---|
| KiB | 4.590e+6 |
| MiB | 4,482.27 |
| GiB | 4.377 |
| TiB | 0.004 |
| PiB | 4.174e-6 |
3.760e+10 bits. A drive sold as 4.7 GB shows as 4.377 GiB in Windows — same bytes, different unit.
Transfer time
6m 58sto transfer 4.7 GB at 100 Mbps (11.25 MB/s effective)
| Connection | Effective speed | Time |
|---|---|---|
| 3G (3 Mbps) | 0.338 MB/s | 3h 52m 6s |
| 4G LTE (25 Mbps) | 2.813 MB/s | 27m 51s |
| 5G (200 Mbps) | 22.5 MB/s | 3m 29s |
| Home broadband (100 Mbps) | 11.25 MB/s | 6m 58s |
| Fibre (1 Gbps) | 112.5 MB/s | 42s |
| USB 2.0 (~280 Mbps real) | 31.5 MB/s | 2m 29s |
| USB 3.0 (~3.2 Gbps real) | 360 MB/s | 13s |
| Gigabit LAN (940 Mbps real) | 105.75 MB/s | 44s |