File Download/upload Time Calculator

How long does it take to download a large image, or .mp3, or .zip file? This calculator will show the download time for lots of different bandwidths. You can specify the amount of overhead (i.e., TCP/IP) to be taken into account. A realistic value for normal internet usage (average file size less than 25 kiloytse) is 50% overhead.

Specify your settings:
File Size:
Overhead: %


Your Result
Time (hh:mm:ss)
9.6 Kbps
14.4 Kbps
28.8 Kbps
33.6 Kbps
56 Kbps
64 Kbps (ISDN)
128 Kbps (ISDN-2)
256 Kbps
512 Kbps
1.024 Mbps
1.544 Mbps (DS1, T1)
2.048 Mbps (E1, ISDN-32)
10 Mbps (10Base-T)
25.6 Mbps (ATM25)
34 Mbps (E3)
45 Mbps (DS3, T3)
51 Mbps (OC1)
100 Mbps (100Base-T)
155 Mbps (OC3)
622 Mbps (OC12)
1 Gbps (1000Base-T)
2.4 Gbps (OC48)
10 Gbps (OC192)

KByte = Kilobyte
MByte = Megabyte
GByte = Gigabyte
Kbps = Kilobit per second
Mbps = Megabit per second
Gbps = Gigabit per second