# comment :amount of oil for my mold

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#### Kalpanaganesan

##### Well-Known Member
i have a mold with lengthxwidthxheight 7.5 * 5*1.12 .all in inches. The volume works to 42.1875 cubic inches.The oil weight is volume *0.4 which is 42.1875*0.4 is 18.875 oz.My recipe is 6.06 % castor oil,21.21% coconut oil ,72.72%olive oil.I have attached the pdf.can some one let me know if iam correct

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#### Ford

Supporting Member
the formula I use is length x width x height x .4 = total "oil" weight. I use "total" recipe weight for my color split calculations. Hope this helps.

#### Elizevt

##### Well-Known Member
Hi there.
I have entered your soap recipe into Soapmaking Recipe Builder & Lye Calculator Its the soap cal that I use.
I suck at maths so I rely on soap calculators to do the math for me.

Here is what it looks like.
Total oil weight - 16.8 ounces
total batch weight - 24.23 ounces

But I'm not sure what lye/ water ratio you are using, I normally use 2:1 but you are probably just using a different ratio.

#### Kalpanaganesan

##### Well-Known Member
Many thanks for addressing my request.Let me work on the same and try.

the formula I use is length x width x height x .4 = total "oil" weight. I use "total" recipe weight for my color split calculations. Hope this helps.

#### Todd Ziegler

##### Circle Z soaps
Many thanks for addressing my request.Let me work on the same and try.

Also keep in mind that the formula for determining how much soap your mold will hold, is not 100% accurate. Depending on your recipe the same mold might hold more or less. All my recipes are 100 ounce total weight and each of the 4 recipes will come out a little different. 2 of them will fill the mold right to the top and the other 2 leave about 6cm to the top.

#### Kalpanaganesan

##### Well-Known Member
Also keep in mind that the formula for determining how much soap your mold will hold, is not 100% accurate. Depending on your recipe the same mold might hold more or less. All my recipes are 100 ounce total weight and each of the 4 recipes will come out a little different. 2 of them will fill the mold right to the top and the other 2 leave about 6cm to the top.