I’m not going to re-invent the wheel and do something others have already done well. If you would like to calculate your own recipes, please use one of the lye calculators on the following links to do so. I have not tested these lye calculators, and accept no liabilty if they are not correct. Here’s a tip to help you make the right size recipe.
I’ve found that 1lb of oil yields approximately 38.645 cubic inches of soap.