101 calculators
Pregnancy and fertility calculators
Every ShePrep calculator in one place — due dates, ovulation, growth percentiles and maternity pay. Each tool publishes its formula, not just an answer box.
BabyAdjusted age calculator for premature babiesWork out your premature baby's corrected (adjusted) age from their due date, plus their actual age…CalculatorAdult height predictorPredict a child's adult height from both parents' heights, with the published margin of plus or…CalculatorAlcohol and breastfeeding timerWork out the wait before the next feed from what you drank, using the NHS two to three hours per…CalculatorAllergen introduction plannerPlan how to introduce the foods that most often trigger allergies, one at a time from around six…CalculatorNHS antenatal appointment scheduleTurn your due date into a dated NHS antenatal calendar: ten appointments for a first baby, seven…CalculatorApgar score calculatorAdd up the five Apgar components and see the published bands, plus what a low or high score does…CalculatorBaby age calculatorWork out how old your baby is in weeks, months and days from a date of birth, and see why the…CalculatorBaby clothing size calculatorFind your baby's clothing size from their length and weight, with the UK age band, the European…CalculatorBaby eye colour predictorPredict your baby's eye colour from both parents and all four grandparents, see every Punnett…BabyBaby feeding amount calculatorWork out typical formula amounts from your baby's weight and age, shown in both ml and fl oz.…CalculatorBaby food portion guideHow much solid food does a baby need at each age, and how much milk goes alongside? UK, US and…BabyBaby growth percentile calculatorWork out your baby's weight, length and head circumference centiles on the UK-WHO, WHO or CDC…CalculatorBaby milestone trackerThe milestones for your baby's exact age from the CDC's 2022 checklists, corrected for prematurity.…CalculatorBaby name combinerBlend two or three names into new baby names seven different ways, by syllable, onset and overlap.…CalculatorBaby health review scheduleSee when your baby health and development reviews are due from a date of birth, what each covers,…CalculatorBaby shower plannerWork out when to hold a baby shower, what each guest costs and which foods to keep off the table,…PregnancyBaby size by week calculatorHow big your baby is at every week from 4 to 42, in centimetres and grams, with the fruit…BabyBaby sleep schedule and wake window calculatorSuggested nap and bedtime windows for your baby's age, worked from the time they woke up. Safe…CalculatorBaby temperature checkerConvert a baby's temperature between Celsius and Fahrenheit, then see which NICE traffic light…CalculatorBaby vaccination schedule calculatorGet every immunisation date for your baby from their birth date, on the UK, US, Australian,…CalculatorBaby weight converterConvert a baby weight between kilograms, pounds and ounces exactly, with the rounding traps that…CalculatorBabyproofing checklistA printable babyproofing checklist filtered to your country, your home and your baby's stage, using…PracticalBirth plan generatorBuild a printable birth plan covering pain relief, birth positions, who is with you, cord clamping…CalculatorBishop score calculatorScore your cervix on all five Bishop parameters and see what the total means for an induction, with…CalculatorBlood pressure in pregnancy classifierEnter one blood pressure reading to see which NICE band it falls into, what changes at 140/90 and…CalculatorBaby blood type calculatorEnter both parents blood groups to see every blood type a baby could inherit, which ones are…CalculatorPre-pregnancy BMI calculatorWork out your pre-pregnancy BMI against the NICE thresholds, including the lower cut-offs for Asian…CalculatorBottle feeding schedule calculatorA day of bottle feeds on the clock, with the amount the AAP publishes for your baby's age at each…BabyBreast milk storage calculatorHow long expressed breast milk keeps in the fridge, freezer or at room temperature. Enter when you…CalculatorBreastfeeding calorie needs calculatorHow many extra calories do you need while breastfeeding? Get an estimate in kcal and kJ, with the…CalculatorC-section recovery timelineTurn the date of your caesarean into dated recovery milestones: dressing off, stitches out, midwife…CalculatorCaffeine in pregnancy trackerAdd up a day of coffee, tea, cola, energy drinks and chocolate against the 200 mg NHS daily limit,…CalculatorChild car seat stage checkerWhich car seat your child legally needs in the UK under both approval systems, and why 15 months is…CalculatorChild Benefit calculatorWork out Child Benefit for your family, how much the High Income Child Benefit Charge claws back,…CalculatorChildcare funding calculator (England)See what England's funded hours and Tax-Free Childcare actually take off your nursery bill, and why…CalculatorChinese gender predictorGet your true Chinese lunar age and lunar conception month from a real lunisolar calendar, plus…FertilityChance of conceiving by ageYour per-cycle and cumulative chance of conceiving, by age and months already trying, from NICE…PregnancyContraction timerTime contractions and see when the 5-1-1 pattern is met, with the NHS advice on when to ring the…CalculatorCost of a baby's first year calculatorBuild an itemised first-year budget in your own currency from real childcare, healthcare and leave…DatingCrown-rump length (CRL) to gestational age calculatorConvert a crown-rump length in mm into gestational age in weeks and days with the Robinson-Fleming…CalculatorCycle after miscarriage calculatorDate the bleeding, the first period and the return of fertility after an early miscarriage, using…DatingDue date calculatorWork out your due date from your last period, a conception date, an early scan measurement or an…PregnancyEstimated fetal weight calculator (Hadlock)Estimate fetal weight from scan measurements using all four published Hadlock formulas, with the…CalculatorExercise in pregnancy trackerScore your week against the 150-minute pregnancy activity target, and see why ACOG and the UK…CalculatorFertility after birth calculatorWork out exactly when you can get pregnant again after a baby: the day-21 line, how long LAM holds,…PregnancyFetal growth percentile calculatorPlot an estimated fetal weight against gestational age on three published growth charts at once,…PracticalFlying while pregnant: cut-off date calculatorEnter your due date and airline for the last date they will carry you, and when you need a…CalculatorFolic acid and vitamin D dose checkerFind whether you need the standard 400 microgram folic acid dose or the prescription-only 5 mg,…CalculatorFree NHS prescriptions and dental care calculatorDate your maternity exemption certificate from the due date or birthday, see what it saves in each…CalculatorFundal height by week checkerUnderstand the fundal height your midwife measured, what the rule of thumb means, and why NICE says…CalculatorGenetic carrier risk calculatorWork out the chance a child inherits a recessive, dominant or X-linked condition from each parent's…DatingGestational age calculatorWork out exactly how many weeks and days pregnant you are, from a due date, your last period or a…CalculatorGestational diabetes risk factor checkerThe five NICE risk factors that decide whether you get a glucose tolerance test, when it happens,…FertilityhCG doubling time calculatorEnter two hCG results and their dates to get your doubling time and 48-hour rise. Shows the real…CalculatorhCG levels by week calculatorCompare an hCG result against a named laboratory published range by week, and see why a single…CalculatorHealthy Start card dates calculatorDate the Healthy Start card and Scotland's Best Start Foods from your due date or your child's…PracticalHospital bag checklist generatorA printable hospital bag list filtered to your country, birth type, season and length of stay, and…FertilityImplantation date calculatorEnter your ovulation or period date to see your implantation window, the most likely days, and the…DatingIVF due date calculatorWork out your IVF due date from a fresh or frozen embryo transfer. Day-3 adds 263 days, day-5 adds…CalculatorIVF success rate calculatorEnter your age at egg collection and the transfer type to get the HFEA birth rate per embryo…PregnancyBaby movements counter (kick counter)Tap each movement and compare today with your own earlier sessions. Read first: the NHS, RCOG and…CalculatorMaternity leave end date calculatorWork out the date your maternity leave ends and when you are due back at work, plus the notice to…PracticalMaternity leave and pay calculatorYour earliest leave start date, notice deadlines, weeks of entitlement and estimated pay for the…CalculatorMilk supply checkerCheck the signs that really show a breastfed baby is getting enough milk: wet nappies, stools,…CalculatorNappy size and cost calculatorFind your baby's nappy or diaper size by weight in UK, US, Australian, Canadian, NZ or Irish…CalculatorNeonatal Care Leave calculatorCount the weeks of Neonatal Care Leave and pay that your baby's days in neonatal care have earned,…CalculatorNew baby grants claim window checkerDate the Sure Start Maternity Grant and Scotland's Best Start Grant claim windows from your due…CalculatorNew baby paperwork deadlines calculatorEvery new baby deadline as a real date: registering the birth in 42 days or 21, the Child Benefit…CalculatorNewborn weight loss percentageWork out what percentage of birth weight your newborn has lost, read it against the NICE 10%…CalculatorNursery budget plannerSplit your baby nursery spend across sleep, travel, feeding and clothes in your own currency, and…CalculatorGestational diabetes OGTT threshold checkerEnter your glucose tolerance test result once and read it against the NICE, WHO 2013 and ACOG…FertilityOvulation and fertile window calculatorFind your fertile window and ovulation day from your last period. Built on 612,613 measured cycles,…CalculatorStatutory Paternity Leave and Pay calculatorWork out your paternity leave dates, notice deadlines and pay from a due date, including the…CalculatorPelvic floor recovery after birthFind which supervised pelvic floor programme you should be offered after your own birth, how many…FertilityPeriod predictorWork out your next 12 period dates from your last period and cycle length, each with the real…CalculatorWhen periods return after birthWhen your first period is likely after birth, worked out from how you are feeding, and when you can…CalculatorPostpartum bleeding trackerTrack bleeding after birth through the three lochia stages and against published red flags for late…CalculatorPostpartum weight loss timelineWhere the pregnancy weight physically goes and when your body returns each part of it, plus what…CalculatorPotty training readiness checkerCheck your toddler against the seven readiness signs the American Academy of Pediatrics publishes,…CalculatorPre-eclampsia risk factor checkerWork the NICE NG133 aspirin rule: one high-risk factor, or more than one moderate factor, means 75…PregnancyPregnancy calorie needs calculatorHow many calories a day do you need in pregnancy? Your own figure by trimester, with the NHS…CalculatorPregnancy vaccination schedule calculatorDate the whooping cough and RSV vaccination windows from your last period or due date, see when…DatingPregnancy weeks to months converterConvert pregnancy weeks and days into months and trimesters instantly. Full week 1 to 42 chart, and…PregnancyPregnancy weight gain calculatorHow much weight should you have gained by this week? Your pre-pregnancy BMI and the range that goes…CalculatorPumping schedule calculatorBuild a pumping timetable from the published frequency for your situation, with Unicef's four-hour…CalculatorPUQE-24 morning sickness severity scoreScore your morning sickness with the three-question PUQE-24 index the RCOG uses, and see where 13…CalculatorReturn to exercise after birthWhat you can start today, what waits for the six-week check, and why running has a twelve-week…DatingReverse conception date calculatorWork backwards from a due date or a date of birth to when conception actually happened. You get a…PregnancyRh factor and blood type compatibility calculatorEnter both parents' blood types to see whether rhesus incompatibility is possible, whether the…CalculatorSchool year group calculatorFind which school year your child will be in and the term they start, using the published cut-off…CalculatorScreen time, activity and sleep checker for under-5sCheck your child's day against the WHO under-5 guideline for screen time, activity, sleep and time…FertilitySemen analysis calculator (WHO 2021)Check every line of your semen analysis report against the WHO 2021 sixth-edition lower reference…CalculatorShared Parental Leave and Pay calculatorSee how many of the 50 shareable weeks and 37 paid weeks are left once maternity leave is cut…CalculatorTeething timeline calculatorWork out when each of your baby's milk teeth is likely to arrive, on their own dates, with NHS…CalculatorTime between pregnancies calculatorWork out your interpregnancy interval from a birth date, see it against what ACOG advises, and why…CalculatorTOG rating and room temperature guideWhat to dress your baby in at any room temperature, built on the safer-sleep advice that is…CalculatorTravel with a baby checklistA printable travel checklist for flying or driving with a baby, with the airline and car seat rules…CalculatorTwin due date calculatorTwins are still due at 40 weeks. What changes is the planned birth date: 37 weeks for DCDA, 36 for…CalculatorVBAC success calculatorEstimate your chance of a vaginal birth after a caesarean with the 2021 MFMU model, the version…CalculatorWeaning readiness checkerCheck your baby's age against the around-six-months guidance and the three developmental signs of…FertilityWhen to take a pregnancy testThe earliest day a positive is plausible and the day a negative is finally reliable, counted from…