In my travels over the internet, I came upon this site:LCC

What it does is calculate exactly what you need to craft an item or multiples of that item.Calculator

The output gives you the amounts of the mats required, including the option to show sub-items, the prices, the crafting points generated (and @ which tier), the total costs and the item(s) you get at regular and at critical success.

I put a permanent link to the site by my ‘Sites I Like’ at the left.