Postpartum recovery & feeding
The fourth trimester — recovering from birth, getting feeding established and looking after yourself while you look after baby. Research what genuinely helps in the weeks after you come home, without the guesswork.
Free tools & calculators for postpartum
Each calculator shows its method and is reviewed against clinical guidance — for planning, not diagnosis.
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Postpartum Period and Fertility Return Calculator
Choose how you feed and optionally add your birth date to see a likely window for your period to return, the LAM criteria, and why fertility can return first.
Breast Milk Storage Calculator: How Long Expressed Milk Lasts
Choose where your milk is stored and the day you pumped it to see how long it stays good and get a clear use-by date for the bottle.
Formula Preparation Ratio: Scoops and Water
Enter a feed size and number of feeds to get the scoops and water per bottle and the total prepared volume, in ounces or millilitres.
Baby Milk and Formula Intake Calculator by Age
Add your baby's age in months and optional weight to see a typical feed size, how many feeds a day, the daily total, and a weight-based cross-check.
Explore Postpartum
The buying guides and product roundups we've published for this stage. Filter by what you're shopping for.
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Pregnancy Baby Toddler is independent product research and shopping guidance — not medical advice. Estimates and calculators are for information only. Read our medical & safety disclaimer.