What this calculator does
Baby formula daily intake works out approximate daily formula volume for a bottle-fed baby, from weight and age. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaDaily formula (mL) = weight(kg) × age-based guideline (45 mL/kg at 1-4 days, tapering to 100 mL/kg by 6-12 months)
The inputs explained
| Field | What to enter |
|---|---|
| Baby weight (kg) | A number, measured in kg. Starts at 4.5. |
| Age | Choose from 1-4 days old (~45 mL/kg), 5 days to 3 months (150 mL/kg), 3-6 months (120 mL/kg), 6-12 months (100 mL/kg). |
| Feeds per day | A number. Starts at 6. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with baby weight
Every other input is held at the calculator’s starting values while baby weight varies. Select any row to load that scenario into the calculator.