I wouldn't normally advocate doing this but since Yeastcalc.com is still down you should know that you can save a copy of it to your local hard drive.
Here's how to do it if you use Firefox (Windows is very similar)
Go to archive.org and search for
http://yeastcalc.com (you need the http:// in front of the url)
Select 2014 in the calendar at the top of the page, then click on the last saved date (Jan 8)
When the page is displayed move your cursor to the far right side of the screen (you do not want it on any of the graphics)
Right click and select View Page Info
Then select the Media button at the top
Find the file ending in YeastCalc_v4.0.swf
Single click on the file, then right click and select Copy
Open a directory on your local hard drive where you want to save the file and Save the file there
To access the file, go to the directory on you hard drive and then double click the YeastCalc_v4.0.swf file.
The Flash program will run from your hard drive and you will get same screen you see (or used to see) on the YeastCalc.com website.
I did this several months ago simple so I could get the info without being online. If the site comes back up then obviously this is not necessary.