We have come up with a new stat calculator thanks to AMeatyAlt:
http://www.dfprofiler.com/statcalculator
The old embedded stat calculator that used to be on this page has been experiencing issues, you can either try the calculator above or try using an archived version of the embedded one by clicking here:
Calculator
Based on Stat Calculator script by Phate666x
Updated and adjusted for the Dead Frontier Wiki by Sovq