Thought I would share some links to Soap Calculators. Like Ally mentioned, you should always run/check a recipe you find off the net or in a book through a lye calculator to make sure its correct.
The following are some of more popular ones found on the net.
[You must be registered and logged in to see this link.] This one is not free but fantastic, keeps track of all your inventory, purchases and even calculates how much each bar of soap costs to make! I use this one
[You must be registered and logged in to see this link.]
Also, for you iPhone users - Brambleberry has a Lye Calculator App! It's around $6 from memory.
The following are some of more popular ones found on the net.
[You must be registered and logged in to see this link.] This one is not free but fantastic, keeps track of all your inventory, purchases and even calculates how much each bar of soap costs to make! I use this one
[You must be registered and logged in to see this link.]
Also, for you iPhone users - Brambleberry has a Lye Calculator App! It's around $6 from memory.