Download Time Calculator

Estimate the Time Needed to Download a File

How Long To Download A File? Calculate Download and Upload Speed!

Download Time Calculator

Download Time Calculator will accurately calculate the time needed to download a file for multiple Internet connection speeds.
Enter the downloaded file size in the field below and specify the file size measure units in the drop-box.

Check also the free online File Size calculator and converter.

Connection Speed Time (DD: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)
Connection Speed Time (DD:HH:MM:SS)
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)
100 Gbps

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Definition of "Download"

To download means to receive a file from the Internet. Such files typically are downloaded from a web server such as http, FTP, mail server or other. In contrast to upload means transferring a file to a remote server. The term "download" may also refer to a file that is offered for downloading, has been downloaded or the actual process of transferring the file. E.g. "A download is available on the product page.", "This is a very large download.", "A download is running so I will make a coffee."

Downloading transfers files for local use and storage. Do not mistake this with streaming, where the data is used immediately, while the transmission is in progress. Such data usually is not stored long-term. Streaming usually is used to display video or audio in a web browser or application. For example YouTube is a video streaming service. Such streaming services even prevent the storage and use of the downloaded data.

Please note that downloading is not the same as data transfer. The term "data transfer" is used to denote moving or copying data between storage devices. Receiving data from the Internet is downloading. The duration of the download is known as download time.

What is Download Time?

Download time is the time needed to transfer a file from the Internet to a local computer, phone, tablet or other Internet-connected device. The download time is determined by the connection speed between the two devices and the size of the transferred file. The connection speed is determined by the hardware capabilities of the two devices and also the ISP (Internet Service Provider) that they use. A faster connection speed will result a faster download and shorter download time. Of course, a smaller file will require shorted download time too.

What is Download Speed?

Download speed is the amount of data that is transferred per second between two Internet-connected devices. It may be expressed in various units which are multiples of a BIT - the smallest unit in computers. Those are bits, Kilobits, Megabits, Gigabits and so on. To convert Kilobits to Megabits you have to divide them by 1024. To convert the Megabits to Gigabits you have to divide them to 1024 again and so on.

The download speed is determined by your service provider and the hardware limits of the connection. For example the highest download speed of a 100Base-T connection is 100 Megabits. Of course that speed is the maximum that can be reached on such hardware and may be slower based on the Internet plan that you have signed for.

You can check your download and upload speeds at SpeedTest.NET. The download and upload speed are usually different. In most cases the upload speed is much slower than the download speed. If the two are equal we call such connection symmetric. If the connection is not "shaped" (limited) by an ISP it is symmetric by default. Please note that the above test is not always correct. IS providers usually detect where your computer connects and provide higher speeds for tests if they detect that you are trying to test your connection speed. Use the Download Time Calculator above to enter your file size and calculate the time need for the transfer. Multiple Internet connection speeds are listed and you can see the ones that are close to yours.

How to Calculate Download Time

To calculate download time you have to divide the file size by the connection speed. The more difficult part is that you have to convert the speed and time units to the desired ones. All the download speeds are in bits per second e.g. Mbps is Megabits per second, Gbps is Gigabits per second. In the above calculation those seconds are converted to days, hours, minutes and seconds for easier reading. To convert the seconds to minutes you have to divide them by 60 (seconds in a minute) and the whole part will be minutes and the fractional part that is left is the seconds.