Free tool
Soap cost per bar calculator.
Oils and butters, lye, fragrance, additives, wrap and labels — plus the freight, labor, overhead and bars that didn’t make it. Find your true cost per sellable bar and a price for your margin. Preloaded with an example 40-bar loaf.
True cost per sellable bar
$3.76
38 good of 40 made · 95% yield
Price at 50% margin
$7.52
Check it against what your market pays and your channel’s fees.
The “naive” number
$1.50
Ingredients ÷ bars made — what most spreadsheets show. It leaves out freight, packaging, labor, overhead and rejects.
The example, worked out: In the example, $60.00 of ingredients over 40 bars looks like $1.50 a bar. Add freight, wrap, three hours at $18 and a share of overhead, then divide by the 38 good bars, and each bar really costs $3.76. The example numbers are made up for illustration — put in your own.
Want this worked out for every batch?
GodKey MFG costs each recipe at what you actually paid — freight included — and spreads rejects over the good bars every time you complete a batch. No typing numbers in. See how it works for soap makers, or read the cost per unit guide.
More free calculators
How do you work out the cost of a bar of soap?
Add up everything the batch used — oils and butters, lye, fragrance, colorants and additives — at what you paid for the amount used. Add the freight you paid to get them, wrap and labels, labor at a real wage and a share of overhead. Divide by the bars you can actually sell, not the bars you cut.
How much does it cost to make a bar of soap?
It depends on your oils, your scent and your bar size, which is why the calculator asks for your own numbers. In the example loaded above, ingredients alone look like $1.50 a bar, but the true cost is $3.76 once freight, wrap, labor, overhead and two rejected bars are counted.
Does cure time add to the cost?
Curing uses no extra ingredients, but it ties up shelf space and money for weeks. Count the space in your overhead share. GodKey MFG keeps curing bars in stock at their batch cost, so the money sitting on the rack is visible.
Should the ends I trim off count as rejects?
If you throw them away or give them away, yes — count them as rejected so their cost spreads over the bars you sell. If you sell ends as samples, count them as bars made.
Is this a lye calculator?
No. This works out what a batch costs, not how much lye a recipe needs. Always check lye amounts with a dedicated lye calculator and your oils’ values.
Is my data saved?
No. The calculator runs in your browser and nothing is sent anywhere. Use “Copy a link” to keep or share a set of numbers.
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