I thought it would be helpful to everyone to put together a little guide to the soap calculators that were available online, as well as some relevant information. I would like this to be an evolving thread because I realize that there are quite a few calculators available, and there are most likely some more to come with the new development of technology. My advice is to read as much as you can on each of these websites to gain an open perspective, and as much information as possible, as well as ask questions on the SMF. For now, I have included the calculators I have found to be most popular within the forum. Feel free to post any questions you may have as well (we realize that these calculators can be quite confusing at first glance), so don't be shy!! The only stupid question is a question that is never asked! Should you wish to add anything to this thread, please feel free to PM me and I would be happy to oblige! Note: The calculations may vary from calculator to calculator. First, I highly recommend that you read this introductory post by our lovely site admin (Thank you Mandy!): Using a lye calculator As well as read the info posted on this website about oil properties that may help with getting a general idea for the oils that you will use. Many of the calculator websites have similar listings: http://www.soapnuts.com/indexoils.html Soap/Lye Calculators: 1.) SoapCalc http://www.soapcalc.com/default.asp Description: This site offers a wide range of possibilities, the user is able to enter ingredients as a weight or percent as well as adjust properties of the soap such as super fat/discount %. This site has loads of useful information, one link I found particularly useful when i was first starting out was the "what will I need" link, which gives the inexperienced soaper a concise list of supplies needed to start soaping with. 2.) 'Majestic Mountain Sage' lye calculator http://thesage.com/calcs/lyecalc2.php Description: In this calculator, users are able to input the amount of oils in percent of total oils, there are also clickable links leading to oil properties as well as suggested amounts of use in recipe's. This site also includes a table after the recipe is calculated that lets the user choose a super-fat percent to be used in the recipe. 3.) SoapMaker http://www.soapmaker.ca Description: Note: this is a free trial, users must purchase the full program after trial period expires. "Create your own recipes, selecting from more than 50 types of base oils. Include your additives too. SoapMaker calculates lye and water, as well as the cost per bar using your ingredient costs. Experiment with recipes and see how they'll turn out before you make the soap... SoapMaker's unique recipe qualities graph shows you the predicted hardness, lather and moisturizing qualities. Compare different recipes and see the results of changes instantly using the dynamic graph feature .Store all your recipes and organize them by category, type, date and cost With SoapMaker Professional, manage your stock of ingredients and products made... your inventory adjusts automatically whenever you "make a batch" (quoted from soapmaker website" 4.) Maple Springs (added by Paul) http://www.maplesprings.com/soapcalc.html Description: "To use the Maple Springs Farm soap lye calculator... simply enter in number of ounces per oil and the amount of lye, water, fragrance, and pigments will be automatically calculated for you...The Calculator is for Sodium Hydroxide = NAOH " This site is quite useful, it gives feedback regarding the size of the recipe as well as how many ounces of essential oils, and oxide/pigments are recommended for the given recipe size. This is quite a valuable tool to if you input recipes that have already been formulated to determine the right coloring amounts and essential oils, or formulate your own!