Download Time Calculator

How the calculation works

The file size is divided by the connection speed. The only catch is the units: speed is measured in bits, while file size is measured in bytes, and there are 8 bits in a byte.

This is why a 100 Mbps line delivers 12.5 megabytes per second, not a hundred. The calculator shows this conversion right in the answer.

Not all megabytes are equal

In file properties, the operating system counts a gigabyte as 1024 megabytes. Your provider's plan counts a megabit as exactly one million bits. We use each value the way it appears in real life, so the answer matches both the size on your disk and the number in your contract.

Why real downloads take longer

The calculation uses the raw channel speed. Protocol overhead is added on top of it, and the server does not always send the file at full speed, because it shares that speed among everyone who is downloading.

You can check your actual speed in the internet speed test and enter that number here instead of the one promised in your plan.