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Not sure how much soap will fit in your mold? Here is a formula that will calculate how much oil you need in your homemade soap recipe to make the right size soaps.

Length of mold x Width of mold x Height of soap x .40 = ounces of oil needed

example: My mold is 6" x 6" and I pour my soap to 2.25" high so the calculation will be:

6" x 6" x 2.25" x .40 = 32.4 ounces

Since I like working in grams, I convert the ounces over by mulfiplying the ounces by 28.375

32.4 ounces x 28.375 = 919.35 grams (I use 900 grams in my recipes for simplicity)