Lube CalcFormula · Batch · Cost
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Ingredient SG % wt Purchase Cost / g Per unit (item) Cost / unit

Any ingredient works. Type a name and pick 🔍 Search PubChem in the dropdown to fetch its measured density from the NCBI chemistry database (needs internet; every lookup is cached so it works offline afterwards). Type a molecular formula like C16H34O for an offline SG estimate from atomic volumes (±10–15%). The built-in list covers ~50 common items. Badges: REF reference table · WEB PubChem measured · EST estimated — every value stays editable. Purchase price can be by weight (g, oz, lb, kg) or volume (ml, L, fl oz, gal); volume prices convert using SG. (Note: density isn’t computable from atomic weights alone — that’s why measured values beat estimates.)

Target batch volume

Enter the finished volume you want to produce. Ingredient amounts are scaled from the recipe percentages by weight.

This value is saved as the product’s default batch size.
Ingredient % wt Weight needed Volume (approx) Cost
Ingredient On hand Equals Per unit Max units Inventory value

Leave an ingredient’s on-hand amount blank to ignore it in the “max units” calculation (untracked ingredients are dimmed). The limiter row (red) is the ingredient that runs out first.

Shortfall for one batch

IngredientNeeded for batchOn handShort byBuy cost est.

Product details

Unit = one sellable bottle/container. Case = fixed count of units.

Below 100% adds make-up for process loss. 100 = no loss.

Extra costs (fully-loaded view)

Ingredient-only cost is always shown alongside; these add the fully-loaded comparison.

Carton, dividers, tape, etc.

Products

NameUnit sizeUnits/caseIngredients

Data

Everything is saved automatically in this browser. Export a backup file to move to another computer or share.

Backup files contain all products, ingredients, prices and inventory.


Lube Calc Formula · Batch · Cost