Question

Just asking, and how would you go about doing this.

I know there is ways to get an overall percentage to inform users of the download’s progress, but I haven’t a clue on how I can do the similar for time.

E.g. “Time until download finishes: 5 minutes”.

All I know is percentages, writing the bytes written then dividing it by the length and turning it into a percentage (if I recall correctly, haven’t done the above for a few months, so I’m rusty and very forgetful)

Thanks, out of curiosity.

Answer 1

For a completely linear model, you simply divide the number of bytes left to download by the so-far-average download speed:

double avgSpeed = (double) bytesDownloaded / timeElapsed;
double timeLeft = byteLeftToDownload / avgSpeed;

If you stick to milliseconds everywhere, timeLeft will contain the estimated number of milliseconds until the full file is downloaded.

To output that properly in terms of hours and/or minutes and/or seconds, I suggest you have a look at

• How to convert milliseconds into human readable form?