Little answers for the biggest questions

Free, gentle calculators for pregnancy and the first years. No login, no jargon, just the numbers you were up googling at 3am.

Sleep

How long your baby should stay awake between sleeps, by age.

A sample day of naps and bedtime for your baby's age.

See which common sleep regression windows are ahead or happening now.

Find out if your baby is ready to drop a nap.

Exactly how old your baby is, in weeks, months, and days.

Your preemie's adjusted age, explained gently.

Your likely implantation window and when a test could turn positive.

How fast your hCG is rising between two blood draws.

When you most likely conceived, from your due date or birth date.

Your due date from your transfer date, for day 3, day 5, and FET.

What zodiac sign will your baby be? Traits, cusp dates, and how your signs get along.