sysop@hub:~/tools/transfer-time-calculator$

transfer-time-calculator

How long does the copy, the upload or the migration take? Enter the amount and the speed. The page keeps megabits and megabytes apart for you and shows what fits through in an hour, a night and a weekend.

Amount of data Speed Usable share of that speed, in %

or pick a link

The slowest part decides: a 10 Gbit network does not help when the source is a single hard disk at 120 MB/s. Many small files are far slower than a few large ones, often by a factor of ten, because each file costs a round trip. Upload is usually much slower than download on DSL and cable. Sizes are decimal (1 GB = 1,000 MB).