Max file size to Upload in SharePoint 2013

The default max upload size for SharePoint 2013 is 250 MB.

However, if you want to increase the file size limit upto 2 GB

Method1:

$WebApp = Get-SPWebApplication "webappurl"
$WebApp.MaximumFileSizePerExtension.Add("file ext", limit) 
$WebApp.Update()

Method2:

Central Administration -> Application Management -> Manage Web Application -> Select Web Application -> Go to General Setting page -> Update the upload size