# Calculate transferRate and Time left for upload files

**URL:** <https://forum.kirupa.com/t/calculate-transferrate-and-time-left-for-upload-files/244619>\
**Category:** flash\
**Created:** [November 20, 2007, 9:58am UTC](https://forum.kirupa.com/t/calculate-transferrate-and-time-left-for-upload-files/244619 "2007-11-20T09:58:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![magdalene](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@magdalene](https://forum.kirupa.com/u/magdalene)\
**Post date:** [November 20, 2007, 9:58am UTC](https://forum.kirupa.com/t/calculate-transferrate-and-time-left-for-upload-files/244619/1 "2007-11-20T09:58:32Z")

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Hi friends i have some questions:  
1.How to calculate a transferRate and Time left for upload files in this function?

listener.onProgress = function(file:FileReference, bytesLoaded:Number, bytesTotal:Number):Void {  
//here  
}

2.Have a size restriction for uploaded files?  
3.How I can cancel a uploaded files?