What this calculation means
Batch-yield impact compares the unit cost of the same batch total spread across two output counts. It holds ingredients and total cost fixed.
This is a fixed-cost, changed-yield comparison. It does not automatically recost a changed ingredient list or portion recipe.
How to use this calculator
Enter the unchanged batch cost and positive current and proposed yields using the same serving or unit definition.
Formula and variables
Unit-cost change = Batch cost ÷ New yield − Batch cost ÷ Current yield
- Batch costUSD
- Total cost of the batch.
- Current yieldservings or units
- Current output count.
- New yieldservings or units
- Proposed output count.
Dollar amounts display to cents, with exact half-cent values rounded away from zero; intermediate calculations keep full precision.
Understand your result
The primary result is the change per serving or unit. The details show the old and new unit costs separately.
Worked example
Batch cost is $24; old yield is 12 portions; new yield is 10 portions.
Batch cost: 24 USD
Current yield: 12 servings or units
New yield: 10 servings or units
- Current allocation: $24 ÷ 12 = $2.00 per portion.
- New allocation: $24 ÷ 10 = $2.40 per portion.
- Subtract $2.40 − $2.00 = +$0.40 per portion.
Example result: $0.40 change per serving or unit
Frequently asked questions
Why does a lower yield raise the cost per serving?
The same dollars are allocated across fewer outputs. A $24 batch divided into 10 servings costs more per serving than the same batch divided into 12.
Is the output the new unit cost?
The primary amount is the change. Read the result details for the separately labelled current and new unit costs.