ByDueDate

Baby planning, by due date

Exactly what your baby needs, how many, and when.

One date changes everything on your list. Tell us yours, and we'll show you what to buy before birth, what can wait, and what to skip, with the math shown.

  • No 100-item lists
  • Official safety sources
  • Free to use

Change it. Every date below moves with it.

Your dates, if you're due on Feb 27, 2027

  1. Start a short registry

    Around 30 items, not 100

    Buy before birth

  2. Ask about a breast pump

    Often covered by US health insurance

    Buy before birth

  3. Infant car seat

    If you'll drive home from the hospital

    Buy before birth

  4. Newborn diapers

    A starter supply, about 2 boxes

    Buy before birth

Keep these dates

Copy a link to this plan. Bookmark it or send it to your partner. Your due date stays in the link and never reaches our server.

Example items. Dates assume your baby arrives on the due date. Sources: breast pump coverage (HealthCare.gov), solids at about 6 months (AAP). The full plan, with quantities and sources for every number, is on its way.

Built on official guidance from

  • American Academy of Pediatrics
  • CDC
  • CPSC
  • NHTSA
  • FDA

Why ByDueDate

A list tells you what. A plan tells you when.

Most baby lists hand you everything at once. So families buy too much too early, then make late-night runs for the things they're actually missing.

The usual list

  • Crib
  • Bassinet
  • Changing table
  • Diaper pail
  • Wipe warmer
  • Baby bathtub
  • Bottle sterilizer
  • Bottle warmer
  • Baby swing
  • Bouncer

…and dozens more. No quantities. No timing. Everything, now.

Your ByDueDate plan

  • Newborn diapers

    About 2 boxes to start

    Buy before birth

  • Sleepers and onesies

    Sized to your season and laundry

    Buy before birth

  • Size 1 diapers

    In bulk, once one brand fits

    Buy at 6 weeks

  • High chair

    One, ahead of solids

    Wait until 4 months

  • Wipe warmer

    Most families never miss it

    Skip

quantities + timing, for your date

The method

Four labels. Every item.

Each thing we mention gets exactly one, worked out from your due date.

  1. Buy before birth

    You need it in the first days home.

    For example An infant car seat, if you will drive home from the hospital.

  2. Buy at 6 weeks

    Wait until you know your baby, then buy the right one.

    For example A bulk box of diapers, once you know which brand fits.

  3. Wait until 4 months

    Not needed yet. Buying early often means buying twice.

    For example A high chair, ahead of starting solids at around 6 months. AAP on starting solids

The tools

Calculators that do the math for you

Each one answers for your due date, season and budget, not one number for everyone. They arrive one at a time. The full Due-Date Plan is first.

  • Due-Date Plan

    Your week-by-week list of what to do and buy, from today to your baby’s first months.

    Building now

  • Diapers and wipes

    How many of each size, based on typical use and how fast newborns grow.

    Planned

  • Onesies and sleepers

    Quantities for the season your baby arrives in and how often you do laundry.

    Planned

  • Bottles

    How many bottles your feeding plan needs, so you don’t buy a cupboard full.

    Planned

  • First-year cost

    A realistic budget built from your own choices, not a scary national average.

    Planned

  • Minimal registry

    A short registry that covers the essentials, ready to share with family.

    Planned

Our rules

Advice you can check

You're about to make a lot of decisions. Here's what we promise about every page.Read how we work.

One date.

Everything else, in order.

Start with your due date. We'll take it from there.

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