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File Download Time Calculator

"APPROXIMATE Time To Transmit Kb or Mb"


Enter file size:
14,400 bps hours minutes seconds
28,800 bps hours minutes seconds
33,600 bps hours minutes seconds
56 Kbps hours minutes seconds
64K ISDN hours minutes seconds
128K ISDN hours minutes seconds
128K Frac T1 hours minutes seconds
256K Frac T1 hours minutes seconds
384K Frac T1 hours minutes seconds
512K Frac T1 hours minutes seconds
768K Frac T1 hours minutes seconds
BritishNet hours minutes seconds
1.544 Mbps T1 hours minutes seconds
T2/DS2 hours minutes seconds
Satellite hours minutes seconds
T3/DS3 hours minutes seconds
T4/DS4 hours minutes seconds
OC1 hours minutes seconds
OC3 hours minutes seconds
OC12 hours minutes seconds
OC48 hours minutes seconds



Short Explanation of Bandwith (8 bits = 1 byte)

BritishNet - Via Power Lines
1.064960 million bits per second (133,120 bytes per second)

384 Fractional T1 = 1/4 Full T1
.384000 million bits per second (192,000 bytes per second)

768 Fractional T1 = 1/2 Full T1
.768000 million bits per second (192,000 bytes per second)

T1 or DS-1
1.536000 million bits per second (192,000 bytes per second)

T2 or DS-2
Equivalent to 4 T1's: 6.144000 million bits per second (768,000 bytes per second)

Satellite - Commerical
(Fastest Available as of early 1998 - see Hughes)

24.002560 million bits per second (3,000,320 bytes per second)

T3 or DS-3
Equivalent to 28 T1's: 46.080000 million bits per second (5,760,000 bytes per second)

T4 or DS-4
Equivalent to 6 T3's: 276.480000 million bits per second (34,560,000 bytes per second)

OC-1
51.080000 million bits per second (6,380,000 bytes per second)

OC-3
(uses Asynchronus Transfer Mode - ATM)

155.080000 million bits per second (19,370,000 bytes per second)

OC-12
(uses Asynchronus Transfer Mode - ATM)

600.000000 million bits per second (75,000,000 bytes per second)

OC-48
2.4 GIGABITS per second (300,000,000 bytes per second)