Baby Formula Cost Calculator accuracy and testing

Formula source

• Cost per bottle = container cost / scoops per container x scoops per bottle x waste factor. Period cost = cost per bottle x bottles per day x days.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• All prices, rates, package sizes, and recipe values are user-entered unless clearly labeled as a general planning default.
• Calculations run locally in your browser and do not store food, nutrition, household, or budget details.
• Follow the formula label and pediatric guidance for preparation, feeding, storage, and infant nutrition decisions.

Unit handling

• Container Cost accepts values in $.
• Container Powder Weight accepts values in g.
• Grams per Scoop accepts values in g.
• Scoops per Bottle accepts numeric values.
• Bottles per Day accepts numeric values.
• Waste Allowance accepts values in %.
• Budget Days accepts numeric values.
• Estimated Period Cost is displayed as currency.
• Daily Cost is displayed as currency.
• Cost per Bottle is displayed as currency.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Currency outputs are displayed with standard US dollar formatting.
• Input precision follows configured step values where provided.

Version history

Change log