File Size Download Calculator

 File size downloadHow long will will my file transfer take?

Use our download calculator to estimate file download or transfer speeds. We offer this tool to assist in determining which connection speed meets your needs. Actual transfer speeds will be slower than these times due to latency. If the results of your file transfer are in the hours, you may want to consider looking at T1 line providers available in your city.

Measuring the maximum data throughput rate of a communications link is a typical method of performing a measurement of the download / upload rate to transfer a 'large' file and measure the time taken to do so. The throughput is then calculated by dividing the file size by the time to get the throughput in megabits, kilobits, gigabits, terabits or bits per second. Another factor which effects file transfer speeds is latency.

Enter File size file size: >
then select Kbits, Mbits etc

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
144K ISDN hours minutes seconds
640K DSL hours minutes seconds
T1 - T3, Frac,
Multi / Bonded
Fractional 768K T1 hours minutes seconds
T1/DS1, DSL 1.54 Mb hours minutes seconds
Bonded 3.0Mb 2xT1 hours minutes seconds
Bonded 4xT1 6.1Mb hours minutes seconds
Ethernet / Cable 10Mb hours minutes seconds
Trans-European 34M hours minutes seconds
Ultraband Cable 40M hours minutes seconds
Full T3/DS3 44.7M hours minutes seconds
WiMax Wireless 75M hours minutes seconds
T4/DS4 hours minutes seconds
Fiber Optics
Fibreless Optics/Laser
OC-1 hours minutes seconds
OC-3 hours minutes seconds
OC-9 hours minutes seconds
OC-12 hours minutes seconds
OC-18 hours minutes seconds
OC-24 hours minutes seconds
OC-36 hours minutes seconds
OC-48 hours minutes seconds
OC-192 hours minutes seconds
OC-768 hours minutes seconds
OC-3072 hours minutes seconds
DWDM - 10Tbps hours minutes seconds
Wireless / Satellite
3G Wireless hours minutes seconds
Wireless CDPD 9.6 hours minutes seconds
Wireless GSM 19.2 hours minutes seconds
Wireless 2.4M hours minutes seconds
Satellite 24M hours minutes seconds

In fact, there are many overheads in transmission that mean the calculated 'effective' throughput does not reflect the true situation. Normally throughput and latency are opposed goals. To improve latency you typically want to increase how much the computer checks to see if you are trying to interact. This checking overhead slows you down. However there is one very common exception to this rule. Network protocols and programs tend to synchronize both ends regularly. If these synchronizations are slow, then throughput can suffer.

Other Factors

Throughput in IT terms, this is the speed at which a computer or network processes data end to end. It therefore is a good measure of absolute performance, and we frequently will see internet connections rated in terms of how many bits they pass per second (bit/s). However it is a very bad measurement of perceived performance, which is mostly based on how quickly it responds to you. Responsiveness has far less to do with throughput than latency.

Latency is a measure of amount of time between the start of an action and its completion, whereas throughput is the total number of such actions in a given amount of time.

T1 Access to the Web Written by - Garry Wolfe, Staff Writer

T1 access is a digital transmission service that can be used for carrying voice and/or data. A T1 connection is sometimes referred to as a "dedicated service" as the service is delivered to and from the customer premise from the CO (Central Office) without combining it with other traffic. A T1 connection is established by providing a "loop" or wire from the users premises to the CO where the service provider has equipment. Part of the cost of a DS1, T3, DS3 is the "loop charge" or the monthly rental fee for the wire that is rented from the local phone company. Once the connection reaches the CO it can access the carriers network and reach any destination. 

T-1 provides high speed, point-to-point digital transmission line (up to 1.544 Mbps). This can be used as a single high-speed data channel or it can be split into 24 channels and allocated to either voice or data applications. It is widely deployed and readily available in most regions and although the service is not diminished by distance from the CO, the price is sensitive to distance. This is due to the rental of the loop from the LEC (Local Exchange Carrier). T1 is currently the most common way that large companies connect their LAN to the rest of the world. 

Are you ready for T1 service? You may be ready if you have critical services that need a reliable connection to the internet. If you run ASP services, host e-mail servers or web servers, have over 20 people accessing the internet or use video on demand you should consider T1 access. While more expensive that DSL, T1 access is made to support the above applications. Also remember that when you begin shopping for T1 service you should partner with someone who will act as your agent and represent your best interests. Consider using a broker or agent to help you with your search and cut through some of the industry lingo to help you get exactly what you need.

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infoExplanation of Terms
Bandwidth (8 bits = 1 byte)

DS-1 or 1.5-DSL
1.536 Mbps (192,000 bytes per second) For definition see Webopedia's Dictionary T-1 or for T1 Terms & Definitions

Wireless 2.4M
2.400 Mbps (300,000 bytes per second)

Broadband over Power Line (BPL)
Digital Power line (DPL)
Broadband Power Line Communications (PLC)

3.0 Mbps (375,000 bytes per second)

T2 or DS-2
6.144 Mbps (768,000 bytes per second) For definition see Webopedia's Dictionary T-2

Satellite - Commercial
24.00256 Mbps (3,000,320 bytes per second)

Trans-European TEN-34
34.08 Mbps (4,250,000 bytes per second)

Ultraband Cable
40.0 Mbps (5,000,000 bytes per second)

For more information see Advent Networks

T3 or DS-3
44.736 Mbps (5,592,000 bytes per second)

For definition see Webopedia's Dictionary T-3

WiMax Broadband Wireless
75.00 Mbps (9,375,000 bytes per second) For definition see Intel's WiMax

T4 or DS-4
274.176 Mbps (34,272,000 bytes per second) For definition see Webopedia's Dictionary T-4

For definition's see Cisco Systems Glossary of Optical Networking Terms

(1 DS-3, 28 DS-1, 672 DS-0)
51.84 Mbps (6,480,000 bytes per second)

(3 DS-3, 84 DS-1, 2016 DS-0)
155.52 Mbps (19,440,000 bytes per second)

(9 DS-3, 252 DS-1, 6048 DS-0)
466.56 Mbps (58,320,000 bytes per second)

(2 DS-3, 336 DS-1, 8064 DS-0)
622.08 Mbps (77,760,000 bytes per second)

(18 DS-3, 504 DS-1, 12096 DS-0)
933.12 Mbps (116,640,000 bytes per second)

Gigabit Optical Networks
OC-28(4 DS-3, 672 DS-1, 16.128 DS-0)
1.244 Gbps or 1244.16 Mbps (155,520,000 bytes per second)

(36 DS-3, 1008 DS-1, 24,192 DS-0)
1.866 Gbps or 1866.24 Mbps (233,280,000 bytes per second)

Fiber Optics, Fiberless Optics/Laser

For more information on Fiberless Optics/Lasers see
Ciena, Cisco, CorningIBM,
JDS Uniphase, Juniper Networks, Lucent, Nortel,
CenturyLink, Sycamore Networks, Sun, TeraBeam etc.

(344 DS-1, 32,256 DS-0)
2.488 Gbps or 2488.32 Mbps (311,000,000 bytes per second)

(192 DS-3, 5376 DS-1,129,024 DS-0)
9.953 Gbps or 9953.28 Mbps (1,244,000,000 bytes per second)

40 Gbps or 40000 Mbps (5,000,000,000 bytes per second)

160 Gbps or 160000 Mbps (20,000,000,000 bytes per second)

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