The formulaScaled amount = (batch amount ÷ batch yield) × target units; batches = ⌈target ÷ batch yield⌉
- Round batches up: a part batch still occupies a full mix and a full oven slot.
- Ingredients scale linearly. Baking time, curing time and mixing time do not.
- Scale by weight wherever possible; cups and spoons lose accuracy fast at volume.
Worked example
A batch yields 10 cakes and uses 3,000 g flour, 1,200 g butter, 40 eggs and 800 g cocoa. You want 25 cakes.
Result. Three batches produce 30 cakes, five more than ordered. Either sell the surplus or plan a smaller final batch.
What scales and what does not
Ingredient masses scale linearly, so doubling a recipe doubles the flour. Process variables do not. Doubling the mix does not double the mixing time, and a double batch in the same oven can bake unevenly rather than faster.
Leavening, salt and strong flavourings often need slight adjustment at large multiples. Scale the arithmetic exactly, then test the first large batch before committing to a customer date.
Surplus from rounding is a planning decision
Because batches are whole, most scaled runs produce a few extra units. That surplus is either a sample tray, a sale, or waste. Deciding which before you bake is what separates a plan from an accident.
The calculator shows the batch count alongside the scaled ingredient list, so the surplus is visible before the mixer starts.
Common mistakes
- Scaling from a per unit recipe you never verifiedIf the batch yield is optimistic, every scaled number is optimistic too.
- Scaling volumesA cup of flour varies by up to 20 percent. At 25 units that variance becomes a failed batch.
- Scaling timeCuring, proving and setting times are properties of the product, not of the quantity.
How Makeable automates this
Makeable is production capacity and inventory planning software for small businesses that make physical goods from recipes or bills of materials. It stores your materials and recipes, keeps stock current as orders arrive, and runs the calculation on this page continuously rather than on request, so the answer to "can I make this?" is always current.
You can start on the free plan with three products and fifteen materials, see how the production engine works, or compare plans and limits.
Common questions
How do I scale a recipe for 100 units?
Divide each batch amount by the batch yield, multiply by 100, then divide 100 by the batch yield and round up to get the number of batches to run.
Can I scale a recipe by a fraction?
Yes for ingredients, with care for process. Half a batch uses exactly half of each ingredient, but mixing and baking behaviour changes, so test before it matters.
How do I keep scaled recipes consistent?
Record everything by weight in one unit per material, store the batch yield alongside the recipe, and recalculate rather than remember. Makeable stores recipes this way and scales them against live stock.
For information and estimates only. Makeable's formulas, batch limits and margin calculations are mathematical estimates based on your inputs. They are not certified accounting, financial, pricing or tax advice. You are solely responsible for setting your own wholesale and retail prices, ensuring profitability, and checking cost calculations before committing money.