Download time calculator
Estimate how long a download takes from the file size and your connection speed.
Related tools
All Data & computing tools →The Download time calculator turns File size (MB), Speed (Mbps) into Time (seconds), Time (minutes), instantly and for free. For instance, with File size (MB) = 700 and Speed (Mbps) = 100 it returns Time (seconds) = 56 and Time (minutes) = 0.933.
How to use it
- Enter your values: File size (MB), Speed (Mbps).
- Read the result instantly: Time (seconds), Time (minutes).
Frequently asked questions
What does the Download time calculator actually compute?
It takes File size (MB) and Speed (Mbps) and derives Time (seconds) and Time (minutes) from them. The calculation is live as you type, so the result updates on every change.
What information do I need to provide?
2 values: File size (MB) and Speed (Mbps). Nothing else is required — no account, no file upload.
Can you show a worked example?
With File size (MB) = 700 and Speed (Mbps) = 100, the calculator returns Time (seconds) = 56 and Time (minutes) = 0.933. Those figures come from running this exact tool, so you can reproduce them by entering the same values.
When would I actually use this?
Finding out how big a thing will be before you make it: how many gigabytes an hour of footage takes, how long a file needs on the connection you have, how large a photo prints before it goes soft, what bitrate fits the budget you were given.
What is the most common mistake?
Taking the advertised connection speed as the transfer speed. A 100 Mb/s line is megabits, the file is in megabytes, and the eight-fold difference between them is where most download estimates go wrong — before overhead and contention take their own share.
What is the difference between the Download time calculator and the Upload Time Calculator?
This one returns Time (seconds) and Time (minutes); the Upload Time Calculator returns Upload time and Upload time. That is the whole difference — open the one whose figure you need.
Is there a tool for the next step?
Video file size calculator is the closest one after this: Estimate a video's file size from its duration and bitrate.
What else is worth having open alongside it?
Audio file size calculator and Bitrate Calculator — they come up in the same task often enough to be worth a second tab.
Where do the figures come from, and how current are they?
Byte prefixes follow the IEC convention where a kibibyte is 1 024 bytes and a kilobyte is 1 000 — drive makers use the second, operating systems often report the first, and a disk that shrinks on arrival is that gap and nothing else. Print sizing assumes 300 dpi unless you change it.