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Baby & Pregnancy Tools

Growth percentiles, feeding, due dates and costs. 20 free tools, no sign-up.

Baby Weight Percentile CalculatorEnter age, sex and weight to see your infant weight-for-age percentile from birth to 24 months.Baby Height Percentile CalculatorEnter age, sex and length to see your infant length-for-age percentile up to 24 months.Baby Head Circumference Percentile CalculatorEnter age, sex and head circumference to see the head-circumference-for-age percentile.Pregnancy Weight Gain CalculatorEnter pre-pregnancy BMI and week to see your recommended total and weekly weight gain range.Conception Date CalculatorEstimate the likely date of conception from your last menstrual period, due date or an ultrasound based gestational age.Baby Feeding Amount CalculatorEstimate how many ounces of formula or milk your baby needs per feeding and per day based on weight and age.Baby Formula Mixing CalculatorWork 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.Diaper Cost CalculatorEstimate how much you will spend on diapers per week, month and per year based on daily changes and price per diaper.Childcare Cost CalculatorEstimate weekly, monthly and yearly daycare or nanny costs and see how much of your take-home pay childcare uses.Baby Sleep Schedule CalculatorEnter your baby age and wake time to see age appropriate wake windows, suggested nap times and total daily sleep.Contraction TimerTap to start and stop each contraction to track duration, frequency and the interval between contractions in real time.Baby Kick CounterTap each time you feel your baby move and time how long it takes to reach ten kicks, a common fetal movement tracking method.Breast Milk Storage GuideSee how long expressed breast milk stays safe at room temperature, in the fridge and in the freezer with dated use-by times.Baby Eye Color PredictorEnter both parents eye colors to see estimated odds your baby will have brown, blue or green eyes based on simplified genetics.Chinese Gender PredictorEnter mother birth date and conception month to see the chart prediction, for fun.Due Date From Ultrasound CalculatorEnter the scan date and the measured gestational age in weeks and days to get your estimated due date and current progress.Baby Shower Budget CalculatorEnter guest count and per person spend on food, decor, favors and venue to see your total baby shower cost and cost per guest.Adjusted Age Calculator for PreemiesEnter birth date and weeks early to find your preemie adjusted age used for tracking milestones and growth.Baby Clothing Size by WeightEnter your baby weight and height to see the matching newborn, 0-3, 3-6 and 6-9 month clothing size.Baby Food Introduction Age GuideEnter your baby age in months to see which first foods and textures are commonly introduced at each stage of starting solids.

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 are free, run entirely in your browser, and need no sign-up.

Frequently asked questions

Are these baby & pregnancy tools free?

Yes. Every baby & pregnancy tool on yourhack.ai is completely free, with no sign-up and no usage limits.

Do these baby & pregnancy tools work on mobile?

Yes. They run in any modern web browser on phone, tablet or desktop. There is nothing to install.

Is my data private?

Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.

How many baby & pregnancy tools are there?

There are currently 20 free baby & pregnancy tools here, and we add more regularly.

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