Free tools to help you get ready for a new baby — costs, feeding, sizes, and registry.
GetBabyReady is a set of free calculators for the practical, countable parts of having a baby — how much it costs, how much to buy, what size fits, and when a food is safe. It is for expecting and new parents in the first year, and it is built around a simple rule: every number on this site is either published by a source we name, or it is arithmetic we show you. Where nobody publishes an authoritative figure, we say so instead of inventing a round number.
There is no sign-up, nothing is stored, and every tool runs in your browser.
Buy one pack of newborn diapers, not a case. Newborns go through up to 10 diapers a day, but Newborn size lasts about 1.6 months on average and some babies skip it entirely — it is the single most common over-buy. Our diaper size finder works out how many you will actually get through before the next size, and the diaper cost calculator turns that into a monthly and first-year figure.
Formula is roughly 2.5 oz per pound of body weight per day, capped at about 32 oz. That is the AAP's own rule of thumb, and it is what our formula feeding calculator uses to get from your baby's weight to ounces per day, ounces per feed, and cans per month. It is a starting estimate, not medical advice — the label and your pediatrician win.
Honey is never safe before 12 months. Honey given to a child under one can cause infant botulism, and that includes honey stirred into food or put on a pacifier. That is a hard rule rather than a preference, and it is the kind of thing our can-my-baby-eat checker answers for over a hundred foods, each with the AAP or CDC page it came from.
Baby clothes are sized by weight, not by the age on the tag. A chunky two-month-old and a slim five-month-old routinely wear the same size, which is why the age label is the least useful number on the garment. The clothes size finder goes by weight and length, and shows you where two manufacturers' charts disagree.
Most baby advice online states a figure with nothing behind it. We take the opposite approach: diaper usage comes from Pampers' published guidance, feeding amounts from the AAP, food-safety calls from the AAP and CDC, and hospital packing lists from Cleveland Clinic and UT Southwestern. Anything we could not source is labelled as our own estimate, on the page, next to the number.
Sourced guidance tells you what is safe and how much to buy. It does not tell you that a diaper pail's body absorbs odour over months in a way bleach will not fix, or that the standard "zippers, not snaps" advice is genuinely disputed by the people who have done it. We collected that from public parent forums, with the thread count and a link on every claim.