# Data transfer speed calculations

Assumptions: M = 1000 Mi = 1024

- Kbps to KB/s: divide by 8*
- Mbps to MB/s: divide by 8*
- Kbps to KiB/s: divide by 8, divide by 1.024
- KiB/s to MiB/h: multiply by 3600 then divide by 1024
- KB/s to MB/h: multiply by 3600 then divide by 1000

This will provide a maximum theoretical transfer speed. Reasonable to factor in 10-20speeds. Uselful resources:

## Flat rate data transfer volumes

- Flat rate connections are constrained to the speed the client is paying for (eg 1 Mbps)
- For many services 50% utilisation is a realistic maximum you would expect allowing for peak and off-peak usage periods.
- Sample theoretical maximum data transfer per month
Total data transfer per month (GB)

Link speed

100% utilisation

80% utilisation

50% utilisation

256 Kbps

83

66.4

41.5

512 Kbps

166

132.80

83

1.024 Mbps

332

265

166

2.048 Mbps

664

531

332

5.12 Mbps

1660

1328

830