Growth percentiles, feeding, due dates and costs.
Free baby and pregnancy tools: growth percentile, feeding amount, due date, contraction timer, kick counter, diaper and childcare cost calculators. In your browser. All 20 tools below are free, run entirely in your browser, and need no sign-up.
Free baby weight percentile calculator using WHO growth standards. Enter age, sex and weight to see your infant weight-for-age percentile from birth to 24 months.
Free baby length and height percentile calculator using WHO growth standards. Enter age, sex and length to see your infant length-for-age percentile up to 24 months.
Free baby head circumference percentile calculator using WHO growth standards. Enter age, sex and head circumference to see the head-circumference-for-age percentile.
Free pregnancy weight gain calculator based on IOM guidelines. Enter pre-pregnancy BMI and week to see your recommended total and weekly weight gain range.
Free conception date calculator. Estimate the likely date of conception from your last menstrual period, due date or an ultrasound based gestational age.
Free baby feeding amount calculator. Estimate how many ounces of formula or milk your baby needs per feeding and per day based on weight and age.
Free baby formula mixing calculator. Work out how many scoops of powder and how much water you need for a target bottle size at the standard 1 scoop per 2 ounces ratio.
Free diaper cost calculator. Estimate how much you will spend on diapers per week, month and per year based on daily changes and price per diaper.
Free childcare cost calculator. Estimate weekly, monthly and yearly daycare or nanny costs and see how much of your take-home pay childcare uses.
Free baby sleep schedule calculator. Enter your baby age and wake time to see age appropriate wake windows, suggested nap times and total daily sleep.
Free contraction timer for labor. Tap to start and stop each contraction to track duration, frequency and the interval between contractions in real time.
Free baby kick counter. Tap each time you feel your baby move and time how long it takes to reach ten kicks, a common fetal movement tracking method.
Free breast milk storage guide and calculator. See how long expressed breast milk stays safe at room temperature, in the fridge and in the freezer with dated use-by times.
Free baby eye color predictor. Enter both parents eye colors to see estimated odds your baby will have brown, blue or green eyes based on simplified genetics.
Free Chinese gender predictor based on the traditional lunar birth chart. Enter mother birth date and conception month to see the chart prediction, for fun.
Free due date from ultrasound calculator. Enter the scan date and the measured gestational age in weeks and days to get your estimated due date and current progress.
Free baby shower budget calculator. Enter guest count and per person spend on food, decor, favors and venue to see your total baby shower cost and cost per guest.
Free corrected age calculator for premature babies. Enter birth date and weeks early to find your preemie adjusted age used for tracking milestones and growth.
Free baby clothing size finder by weight and length. Enter your baby weight and height to see the matching newborn, 0-3, 3-6 and 6-9 month clothing size.
Free baby food introduction guide. Enter your baby age in months to see which first foods and textures are commonly introduced at each stage of starting solids.
Yes. Every baby & pregnancy tool on yourhack.ai is completely free, with no sign-up and no usage limits.
Yes. They run in any modern web browser on phone, tablet or desktop. There is nothing to install.
Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.
There are currently 20 free baby & pregnancy tools here, and we add more regularly.