Pregnancy calculators

Due Date Calculator

Estimate your baby's birth date from your last period, conception, or IVF transfer.

Ovulation Calculator

Find your fertile window, ovulation day, and peak fertility days.

Pregnancy Weight Gain

Healthy gain range and weekly target based on your pre-pregnancy BMI (IOM 2009).

Baby Size by Week

Interactive week 4-40 tracker: baby's size, length, weight, and what's developing.

Contraction Timer

Time contractions and apply the 5-1-1 rule for when to head to the hospital.

Kick Counter

Tap to count fetal movements, time your count to 10, and track the trend.

Pregnancy Test Timing

When can you reliably take a home pregnancy test? Calculate from your LMP.

Fertility Window

Your six-day fertile window plus peak ovulation day.

Fetal Weight (Hadlock)

Estimate fetal weight from ultrasound measurements with the Hadlock formula.

Pregnancy BMI Calculator

Pre-pregnancy BMI category, recommended weight-gain range, and GDM risk band.

Baby Due Date Countdown

Weeks and days until your baby arrives, percent complete, and milestone markers.

hCG Doubling Time Calculator

Enter two beta-hCG results to see your doubling time and 48-hour rise.

Baby Gender Predictor

Just-for-fun Mayan boy-or-girl prediction. Chinese chart coming soon.

Luteal Phase Calculator

Measure your luteal phase length, check the 12-16 day range, and track DPO.

Implantation Calculator

Your implantation window (6-12 DPO) and the earliest reliable test date.

Baby Growth Percentile

WHO 0–24 mo percentiles for weight, length and head circumference.

Conception Date Calculator

When did I conceive? Works back from EDD, LMP, or IVF transfer.

How Many Weeks Am I?

Current pregnancy week + trimester + percent complete.

Baby Age Calculator

DOB → current age in years/months/weeks/days + next milestone.

Chinese Gender Predictor

Traditional Chinese chart — companion to the Mayan predictor.

Breastfeeding Calorie Calculator

Daily kcal target while nursing (Mifflin-St Jeor + IOM lactation).

Postpartum Weight Loss Timeline

Realistic timeline back to pre-pregnancy weight, breastfeeding-aware.

Diaper Size & Quantity Calculator

Diaper size from weight + daily/weekly/monthly quantity from age.

Newborn Sleep Schedule

Recommended sleep windows by your baby's age in weeks.

Pregnancy Calorie Calculator

Daily kcal target by trimester from Mifflin-St Jeor + an activity factor.

Pregnancy Water Intake

Daily hydration target by body weight, activity level and climate.

IVF Due Date Calculator

Due date from your embryo transfer — Day 3, Day 5 blastocyst, or FET.

Child Height Predictor

Predict your child's adult height from both parents' heights.

PUQE Score (Nausea Severity)

Three-question Pregnancy-Unique Quantification of Emesis scale.

Gestational Diabetes Risk

Should you be screened early for GDM? Risk-factor triage tool.

Preeclampsia Risk

Aspirin-prophylaxis triage aligned with USPSTF, ACOG and NICE.

Baby Eye Colour Predictor

Polygenic-aware probabilities for brown / hazel / green / blue.

Baby Blood Type Calculator

ABO + Rh inheritance — full Punnett with all eight types.

Wives' Tales Gender Quiz

Twelve classic folklore signs tallied into a boy-or-girl prediction.

Pregnancy Nutrition Calculator

Daily RDAs by trimester — protein, iron, folate, calcium, DHA…

Car Seat Expiration Calculator

When does my car seat expire? Brand-aware lifespan from manufacture date.

Maternity Leave Calculator

Country-aware leave window — US FMLA / UK / EU / CA / AU / IN / SG.

Diaper Budget Calculator

Cost of diapers from birth through potty-training, your price + brand.

Pregnancy Workout Safety Checker

Trimester + activity + complication-aware traffic-light, ACOG-aligned.

Pregnancy Announcement Generator

Cute / funny / formal / partner / sibling announcement ideas.

Breast Milk Calculator

Daily breast-milk volume and per-feed amount by weight and age.

Infant Formula Calculator

Daily formula volume, per-bottle, and cans-per-month from age and weight.

Postpartum Depression Quiz (EPDS)

Validated 10-question Edinburgh Postnatal Depression Scale screen.

Twin Probability Calculator

Ethnic baseline × risk-factor multipliers for twin pregnancy odds.

Baby Personality Quiz

Birth month + traits → playful archetype. Just-for-fun keepsake.

Labor Pain Coping Style Quiz

Match your preferences to epidural, water, hypno, movement or gas.

Hospital Bag Checklist

Customised list — delivery type, feeding plan, length of stay.

Trimester Symptom Quiz

What's normal vs red-flag for your week — NICE / ACOG / RCOG triage.

Food Introduction Tracker

Solids + 9 (US) or 14 (EU) priority allergens, LEAP / EAACI protocol.

Vaccine Scheduler

Personalised CDC ACIP 2026 + UK NHS schedule from date of birth.

Child & Teen BMI

CDC 2000 LMS percentile, ages 2–20, with AAP 2023 obesity classes.

Cost of Raising a Child

USDA + UK CPAG personalised projection — region, income, childcare adjusted.

Toddler Feeding 12–36 mo

IOM DRI + AAP daily targets; choking hazards; eating-pattern red flags.

Pregnancy Pillow Advisor

Match pillow type to trimester + body + complaint; Cronin 2019 sleep evidence.

Birth Plan Builder

Print-friendly one-page plan with WHO / ACOG / NICE evidence defaults.

Growth Chart 2–20

CDC LMS height-for-age and weight-for-age percentile + z-score.

Stroller Compatibility

Travel-system click-in matrix — UPPAbaby, Bugaboo, Nuna, Chicco, Britax & more.

Baby Shower Registry

Curated must-have / nice-to-have / skip list with AAP safe-sleep flags.

Name Numerology

Pythagorean + Chaldean Destiny, Soul, Personality numbers.

Nakshatra Finder

Vedic lunar mansion from DOB — Lahiri ayanamsa + Meeus Moon longitude.

Baby Names Finder

220+ international names — SSA + ONS + Behind the Name. Filter & search.

Bishop Score

Modified Bishop pre-induction cervical readiness (ACOG / NICE).

Apgar Score

Newborn 1- and 5-minute APGAR assessment (AAP / ACOG 2015).

VBAC Success Predictor

Grobman 2021 race-neutral MFMU calculator for TOLAC success.

Pediatric Medication Dose

Weight-based mg/kg for paracetamol, ibuprofen, amoxicillin, more (BNFc / AAP).

CDC Milestone Tracker

Learn-The-Signs Act-Early checklist 2 mo – 5 yrs (Zubler 2022).

PHQ-9 Perinatal Depression

Validated 9-question depression screen — ACOG CPG #4 / USPSTF Grade B.

GAD-7 Perinatal Anxiety

7-question anxiety screen with perinatal cutoff (Simpson 2014; ACOG 2023).

GDM OGTT Interpreter

75g IADPSG / 100g Carpenter-Coustan gestational diabetes diagnosis.

50g GCT Screen

ACOG two-step glucose challenge test — step 1.

Newborn Bilirubin (AAP 2022)

Phototherapy threshold + escalation line — race-neutral AAP 2022 nomogram.

M-CHAT-R Autism Screen

AAP-recommended 18 and 24-month autism screen (Robins 2014).

Aspirin for Preeclampsia Prevention

USPSTF / ACOG / NICE / FIGO categorical risk stratifier — 81-150 mg.

Antenatal Steroids Eligibility

ACOG / WHO / ALPS criteria — betamethasone / dexamethasone for preterm lung maturation.

Cervical Length Interpreter

TV ultrasound 16-24 wks per SMFM Consult #70; progesterone + cerclage triggers.

Preeclampsia Diagnostic Criteria

ACOG 2020 / ISSHP 2018 — BP + proteinuria/severe features.

HELLP Syndrome Classifier

Tennessee (Sibai) complete + Mississippi (Martin) three-class.

Kleihauer-Betke / FMH

Fetal-maternal haemorrhage volume + RhIg dose per ACOG PB 181.

MEOWS Maternal Warning Score

NHS / CEMACH 2007 track-and-trigger; 1 red or 2+ yellow = escalation.

AFI / SDP Interpreter

Amniotic fluid measurement (Phelan / Chamberlain); SMFM prefers SDP.

Biophysical Profile (BPP)

5-component fetal wellbeing score (Manning 1980); modified BPP option.

MCA-PSV Fetal Anaemia

Mari NEJM 2000 — 1.5 MoM threshold for moderate-severe fetal anaemia.

Fetal Fibronectin (fFN)

Qualitative / quantitative fFN — NPV 99.5 % for delivery within 7 days.

Robson 10-Group Classification

WHO 2015 global standard for CS rate audit by obstetric characteristics.

New Ballard Score (NBS)

Postnatal gestational age estimation (Ballard 1991; ± 2 weeks accuracy).

Sarnat HIE Staging

Neonatal encephalopathy I/II/III (Sarnat 1976); cooling-eligibility criterion.

Therapeutic Hypothermia Eligibility

Neonatal cooling for HIE (NICHD / TOBY / NICE NG237) — 4 mandatory criteria.

FLACC Pediatric Pain

5-item behavioural pain scale 2 mo - 7 yr (Merkel 1997; AAP).

Neonatal Sepsis Calculator

Kaiser / Kuzniewicz 2017 EOS risk per 1,000 — reduces antibiotic exposure 60-70 %.

Fenton Preterm Growth

Weight-for-PMA percentile 22-50 wk (Fenton 2013; AAP / CPS / WHO).

First-Trimester Combined Screen

11-13+6 wk NT + β-hCG + PAPP-A + age → T21 posterior risk.

Quad Screen Interpreter

AFP / β-hCG / uE3 / inhibin A pattern at 15-20 wk for T21/T18/NTD.

NIPT / cfDNA Interpreter

Non-invasive prenatal test PPV by prior risk (ACOG 2020).

NIPS Neonatal Pain

Lawrence 1993 6-item term & preterm newborn pain scale.

Thompson HIE Score

9-item neonatal encephalopathy severity (Thompson 1997; BAPM).

Finnegan NAS Score

Neonatal opioid withdrawal severity (AAP 2023; ESC alternative).

PPH / QBL Threshold

Quantitative blood loss + ACOG CO 794 PPH thresholds.

CMQCC PPH Risk Tier

LOW / MEDIUM / HIGH PPH risk pre-stratification.

CTG Categorization (NICHD)

Intrapartum fetal heart trace I / II / III (Macones 2008).

CRIB-II Neonatal Risk

5-item NICU admission mortality risk score (Parry 2003).

ORS Volume Calculator

WHO 2006 paediatric oral rehydration volumes by weight + severity.

Silverman-Andersen Score

5-item neonatal respiratory distress severity (Silverman 1956).

Modified Friedman Labor

ACOG/SMFM 2014 labor progress — active phase from 6 cm.

Cerebroplacental Ratio (CPR)

MCA-PI / UA-PI brain-sparing index (ISUOG, Bahado-Singh 1999).

UA / DV Doppler

Placental insufficiency staging — AEDF / REDF / DV reversal (TRUFFLE).

SNAPPE-II Neonatal Severity

Richardson 2001 9-item NICU mortality score (VON benchmarking).

MUAC + Dehydration Scale

WHO 6-59 mo malnutrition + Friedman 2004 dehydration scale.

FMF First-Trimester PE Screen

Bayesian Triple Test — ASPRE 1:100 threshold for aspirin.

QUiPP App — Preterm Birth Risk

King's College London NICE-endorsed algorithm (Watson 2020).

ASQ-3 Developmental Screen

Ages & Stages Questionnaires — AAP Bright Futures standard.

PEDS Developmental Tool

Glascoe parents' concerns screen — under 2 minutes.

GBS Intrapartum Prophylaxis

Penicillin G first line + cefazolin/clindamycin/vancomycin for allergy. ACOG CO 797, CDC 2024.

Magnesium Sulphate Dosing

Fetal neuroprotection (< 32 wk) + eclampsia prophylaxis/treatment regimens.

Oxytocin Titration

Low-dose vs high-dose induction protocols with tachysystole management.

VTE Prophylaxis (RCOG 37a)

Antenatal + postnatal risk score with weight-banded LMWH dosing.

Methotrexate for Ectopic

Single-dose eligibility + BSA dose + day-4/7 follow-up. ACOG PB 193, NICE NG126.

Newt Newborn Weight Loss

Hour-specific percentiles for vaginal vs caesarean delivery. Flaherman 2015 Pediatrics.

Endometrial Thickness (IVF)

Liu 2018 outcome bands for FET; triple-line vs homogeneous patterns.

Semen Analysis (WHO 2021)

6th-edition reference limits with OAT-pattern recognition.

Neonatal Hypoglycaemia Screen

BAPM 2017 + PES thresholds; dextrose gel pathway.

Bilirubin Exchange Threshold

AAP 2022 exchange-transfusion nomogram with escalation-of-care zone.

NRP Resuscitation Algorithm

Interactive AAP/AHA NRP 8th-edition walk-through with SpO2 targets.

Croup Westley + Dexamethasone

Severity score + weight-based dexamethasone & nebulised epinephrine.

Paediatric Early Warning (PEWS)

UK National PEWS 2023 — vitals + carer-concern trigger.

Vaccine Catch-Up Scheduler

CDC + UK Green Book catch-up overview with key principles.

PRAM Paediatric Asthma

5-item severity + treatment ladder (Chalut 2000, GINA 2024).

FGR Doppler Composite

UA + CPR + MCA-PSV + DV unified tier with TRUFFLE-aligned delivery timing.

Postpartum Thyroiditis Screen

TSH + fT4 + anti-TPO pattern with PPT vs Graves vs PPD differentials.

TTTS Quintero Staging

Stage I–V with GA-adjusted management (laser, amnioreduction, delivery).

Hypertensive Emergency Ladder

Severe-range BP acute treatment: labetalol → hydralazine → nifedipine (ACOG CO 767).

Postpartum Contraception

CDC US-MEC 2024 method-by-method eligibility with VTE + BF context.

Congenital Infection Workup

CMV / parvovirus / toxoplasmosis IgM-IgG-avidity logic + treatment.

Paediatric Murmur Classifier

Innocent vs pathological referral decision (AAP + NICE).

Membrane Sweep Likelihood

Labour-within-7-day probability by Bishop + GA + parity (NICE NG207).

Recurrent Miscarriage Workup

ESHRE 2022 / RCOG 17 / ASRM 2020 investigations + treatment by diagnosis.

Insulin Titration in Pregnancy

Target-driven GDM / T1 / T2 DM dosing by trimester + weight.

Anti-D Ig Dosing

Antenatal + sensitising-event + post-delivery dose ladder (ACOG / RCOG).

Selective FGR (sFGR) Staging

Gratacós Type I/II/III in monochorionic twins by UA Doppler.

Hyperemesis Gravidarum Protocol

IV thiamine + fluids + antiemetic ladder (RCOG GTG 69).

Vaginal Progesterone (PTB)

Short-cervix + prior-PTB eligibility (Romero 2018 / NICE NG25).

Eat-Sleep-Console (ESC) NOWS

Functional NOWS assessment — halves pharmacotherapy (Young NEJM 2023).

Maternal Sepsis Bundle

Sepsis-3 + omqSOFA + 1-hour bundle with obstetric source control.

Cholestasis of Pregnancy (ICP)

Bile-acid stratified delivery timing (Ovadia 2019 IPD-MA, RCOG GTG 43).

PCOS in Pregnancy

Rotterdam diagnosis + antenatal risk plan (Teede 2023).

Abdo Pain in Pregnancy Triage

Red flags + site-based differentials (RCOG GTG 25 2024).

Phototherapy Stop + Rebound

When to stop + when to re-check TSB (AAP 2022, Chang 2017).

Newborn Diaper Output Tracker

Is my baby getting enough milk? Day-by-day wet & dirty diaper minimums.

Postpartum Bleeding (Lochia)

How long does postpartum bleeding last? Three phases + when to call.

Baby Sleep Regression

Recognise 4-, 8-, 12-, 18-, 24-month regressions and what helps.

Baby Growth Spurt

Common spurt windows (1, 3, 6 weeks; 3, 6, 9 months) + signs.

Pregnancy Symptom Self-Check

When to call, when to wait, when it's an emergency — plain-language.

Toddler Tantrum Check

How long do tantrums last + what helps in the moment + when to talk to GP.

Breastfeeding Latch & Supply

Signs of a good latch and reliable supply checks (it's not how full you feel).

Baby Colic / PURPLE Crying

Wessel's rule of 3s, the PURPLE crying framework, what helps + red flags.

Pregnancy Food Safety

Can I eat sushi / soft cheese / runny eggs? Updated NHS + FDA guidance.

Baby Reflux Severity

Normal posseting vs reflux vs GORD vs CMPA — NICE NG1 framework.

Baby Fever Decision Tool

When to worry about baby's temperature, age-banded action thresholds (NICE NG143).

Baby Teething Check

Real teething signs vs misattributed symptoms (Massignan 2016 meta-analysis).

Newborn Skin Condition Identifier

Milia, baby acne, cradle cap, eczema, Mongolian spots — what's that rash?

Baby Vaccine Reaction Tracker

Normal vs concerning vaccine reactions + the MenB paracetamol exception.

Weaning Readiness Signs

Three NHS readiness signs + current allergen-introduction guidance (LEAP/EAT).

Baby Constipation Severity

Hard pellet stools vs infant dyschezia, breastfed normal patterns, NICE CG99 first-line treatment.

Baby Cough Recognition

Cold vs croup vs bronchiolitis vs whooping cough — match the pattern.

Hand, Foot & Mouth Disease

Classic vs atypical (Coxsackie A6), HFM in pregnancy, nail-shedding 4-8 weeks later.

Postpartum Hair Loss Tracker

Telogen effluvium timeline (peaks 4-6 mo, resolves by 12), when it's NOT just shedding.

Postpartum Mood Early-Warning

Between-EPDS check-in: baby blues vs PPD vs psychosis, intrusive thoughts explained.

Pregnancy Palpitations Self-Check

Normal pregnancy heart awareness vs red flags (PE, cardiomyopathy, SVT). Resting HR ranges.

Separation Anxiety Stages

When it starts, peaks, ends. Why it's HEALTHY. When persistent distress is a disorder.

Oral Thrush — Self-Check

Thrush vs milk residue (5-sec wipe test), miconazole / nystatin, nipple thrush ping-pong.

Fertility Tracking Accuracy

Method-by-method effectiveness: symptothermal 98%, calendar 76%, apps in between.

Croup at Home or Hospital?

Mild = home; moderate = phone for dexamethasone; severe = A&E. Spotting epiglottitis.