Estimate calories burned making breast milk by baby age and feeding frequency, at ~0.67 kcal per mL. Fuel milk production without guessing — free, local, informational only.
Calculate infant formula amounts by age and weight with feeding schedules. Get daily ounces and bottle splits right — free, local, informational only.
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The tool estimates burn from milk volume: ~0.67 kcal per mL, with per-feed volumes of 60–210 mL by baby age. Defaults (3 months, 8 feeds) give 960 mL/day and about 643 kcal burned. Actual supply varies widely — treat it as an estimate.
Mild deficits are generally compatible; aggressive cuts can dip supply. Prioritize protein and hydration over speed.
Drink to thirst plus extra — a glass per feed session is the practical rule. Dehydration dents supply before hunger does.
No — math runs locally in your browser. Health data never leaves your device.
Baby Formula Calculator
Calculate infant formula amounts by age and weight with feeding schedules. Get daily ounces and bottle splits right — free, local, informational only.
Daily Calorie Needs
Calculate your daily calorie needs from BMR (Mifflin-St Jeor) times activity level. Shows basal burn plus maintenance calories for fitness planning. Health data never leaves your device — every calculation runs locally in your browser.
Last updated October 2026