Free bath bomb cost calculator

Free bath bomb cost calculator for handmade makers.

Enter your baking soda, citric acid, oils, fragrance, and packaging. Get your true cost per bomb and a smart price range in minutes.

  • Baking soda, citric acid, oils & fragrance
  • True cost per bomb with profit and margin
  • Smart price ranges across three market positions
Calculate my bath bomb cost free →
Free forever. No account needed. No credit card.
Ingredients
Ingredients
+
Packaging
Packaging
+
Your time
Your time
+
Fees
Fees
=
True cost
True cost
Your bath bomb pricing snapshot
True cost/bomb
$1.85
Profit/bomb
$4.15
Margin
69%
Suggested price range
Competitive
$4–$6
54–69% margin
Premium
$7–$9
74–79% margin
Luxury
$12–$16
88–88% margin
Where your money goes
Dry ingredients45%
Oils & butters25%
Labour15%
Fragrance10%
Packaging5%

Bath bomb costing has a few challenges that catch makers out. The standard 2:1 ratio of baking soda to citric acid affects your yield per bomb and means you can't freely substitute ingredients without recalculating everything. The fizzing reaction is chemistry — get it wrong and you're writing off the whole batch. Fragrance and colour costs add up quickly at the per-unit level, especially if you're making multiple scents in small runs. The calculator lets you enter every ingredient by weight, handles unit conversion, and divides the total across however many bombs your batch yields. Open the calculator to get started. No account or sign-up needed.

Built for bath bomb makers who want real numbers.

Stop estimating. Stop undercharging. Know exactly what every bomb costs to make.

Ingredients

Ingredient-level costing

Enter every ingredient (baking soda, citric acid, oils, butters, fragrance, colourant, mica) with what you paid per unit. The calculator converts units and works out cost per bomb automatically across your batch.
The most common mistake: not costing citric acid and fragrance accurately per bomb.
Labour

Labour that actually counts

Enter your hourly rate and batch time. Bath bombs require careful mixing and pressing — that time has real value. Most makers price their time at zero. That's the real problem.
Mixing, pressing, and drying time adds up fast across a large batch.
Pricing

Smart pricing guidance

Get three suggested price ranges based on your actual cost per bomb. Know where your bath bombs belong: farmers market, Etsy, or boutique spa retailer.
Know your tiers before every sales conversation and market application.

Three steps to know your cost per bomb.

Simple enough to do before your next batch.

1

Add your bath bomb ingredients

Enter baking soda, citric acid, oils, butters, fragrance, colourant, and any additives, along with what you paid per unit. We handle the unit conversion.
2

Packaging, labour & fees

Enter your batch size and bomb count, packaging costs (shrink wrap, boxes, labels), your hourly rate, and any selling or platform fees.
3

Get your cost per bomb

See your true cost per bomb, profit margin, and smart pricing ranges across competitive, premium, and luxury market positions.
Try it now →
Why trust this calculator

This calculator was built by Batchforja, a software company that makes inventory and production management tools specifically for small-batch makers. The costing methodology was designed with bath bomb makers in mind: it handles ingredient-level entry by weight, accounts for the 2:1 baking soda to citric acid ratio in your recipe, and divides costs across your batch yield so you get a true cost per bomb rather than just a materials estimate. It's free to use with no account required. If you want to track ingredient inventory, batch history, and margins automatically as your business grows, that's what the full Batchforja platform is for.

Bath bomb pricing questions, answered

Common questions from handmade bath bomb makers.

Is the bath bomb cost calculator free?+
Yes, completely free. No account, no credit card, and no time limit.
How do I calculate the cost per bath bomb?+
Add up all ingredient costs (baking soda, citric acid, oils, butters, fragrance, colour), your packaging costs, and your labour time. Divide the total by the number of bombs in your batch. The calculator does this automatically.
What is the correct ratio of baking soda to citric acid for bath bombs?+
The standard ratio is 2 parts baking soda to 1 part citric acid by weight. This ratio creates the fizzing reaction and affects your ingredient yield per bomb, which the calculator accounts for when you enter your batch quantities.
How do I cost fragrance oil in bath bombs?+
Enter fragrance oil as an ingredient with the amount used per batch by weight and the price you paid per ounce or pound. Fragrance typically makes up 1–3% of total batch weight. It's often the most expensive per-unit ingredient after citric acid.
What is a good profit margin for handmade bath bombs?+
A healthy margin for handmade bath bombs is typically 55–70%. Your selling price should be at least 2.5x your true cost per bomb. The calculator shows your current margin and suggests three price tiers.
How much should I charge for a handmade bath bomb?+
It depends on your true cost per bomb. A common starting point is 3x your cost of goods. For a bath bomb that costs $2 to make, $6–$9 is a typical retail range. Premium ingredients, moulds, or added inclusions can push prices to $10–$14.
Does it work for different bath bomb sizes and moulds?+
Yes. The calculator works for any size or shape. Enter the total batch weight and batch count to get the per-unit cost. Different moulds just change your unit count from the same batch weight.
Does it include Etsy fees for bath bomb sellers?+
Yes. You can enter Etsy's transaction fee (6.5%), listing fee, and payment processing fees. See Etsy's current fee schedule for exact amounts.
What is the difference between the free calculator and Batchforja?+
The free calculator gives you a one-time cost-per-bomb calculation. Batchforja is the full platform for ongoing batch tracking, ingredient inventory, and automatic margin monitoring across your entire product range.

Ready to find your true cost per bomb?

It's free, takes 5 minutes, and no account is needed.

Calculate my bath bomb cost →

Track bath bomb costs automatically
with Batchforja

Ingredient prices change. Batchforja alerts you the moment price changes eat into your margin. No spreadsheet required.

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