All Pregnancy Calculators 🧮
Every free calculator in one place — due dates, IVF & fertility, pregnancy health, and animal pregnancies. Pick a category or search to find the right tool.
Due Date Calculators
Find your baby's due date from your LMP, conception, ultrasound, or IVF transfer date.
Due Date Calculator
Calculate your due date from your last menstrual period with Naegele's Rule.
LMP Due Date Calculator
Due date from the first day of your last menstrual period.
Last Menstrual Period Calculator
LMP-based due date calculator with cycle-length adjustment.
Conception Date Calculator
Due date from your estimated or known conception date.
Ultrasound Due Date Calculator
Due date from ultrasound measurements (CRL, BPD, FL).
Reverse Due Date Calculator
Work backwards: find conception and LMP from a known due date.
Ovulation Due Date Calculator
Due date from your ovulation date.
Week-by-Week Due Date Calculator
See your due date plus a full week-by-week pregnancy breakdown.
Implantation Date Calculator
Estimate when implantation occurred from ovulation or transfer.
How Many Weeks Pregnant Will I Be on a Date
See how many weeks pregnant you'll be on any future date — plan trips, announcements, and leave.
Baby Birthstone Calculator
Reveal your baby's birthstone, birth flower, and zodiac sign from the due date — a fun keepsake with instant results.
IVF & Fertility
Dating tools for IVF, FET, IUI, implantation, and fertility planning.
IVF Due Date Calculator
Due date from your IVF embryo transfer date (Day 3 or Day 5).
FET Due Date Calculator
Due date from a frozen embryo transfer date.
FET vs Fresh Transfer
Compare frozen vs fresh embryo transfer dates and outcomes.
IUI Due Date Calculator
Due date from your intrauterine insemination date.
Implantation vs Period Calculator
Is it implantation bleeding or your period? Compare the dates.
IVF Pregnancy Timeline
Full IVF timeline: retrieval, transfer, beta test, and milestones.
Chinese Calendar Due Date Calculator
Due date using the traditional Chinese pregnancy calendar.
When to Take a Pregnancy Test Calculator
Find the earliest and most reliable dates to take a pregnancy test from your last period and cycle length.
Pregnancy Health
Weight gain, hCG levels, test lines, pregnancy chances, and risk estimators.
hCG Level Checker
Check if your hCG levels are doubling normally in early pregnancy.
hCG Doubling Time Calculator
Calculate hCG doubling time from two beta results and compare with the typical 48–72 hour range.
Kick Counter
Track fetal movements with the 10 kicks in 2 hours method and learn when to call your provider.
Contraction Timer
Check contractions against the 5-1-1 rule: 5 minutes apart, 1 minute long, for 1 hour — know when to head in.
Maternity Leave Start Date Calculator
Plan maternity leave around your due date: leave start dates at 36–38 weeks, return date, and countdown.
NIPT Test Timing Calculator
Find your earliest NIPT date (10 weeks), the ideal testing window, and expected result dates from your LMP, due date, or IVF transfer.
Pregnancy Caffeine Calculator
Total your daily caffeine from coffee, tea, cola, energy drinks, and chocolate against the 200 mg pregnancy guideline.
Breast Milk Intake Calculator
How much breast milk your baby needs per day: 24-hour totals and per-feed amounts from your baby's weight.
Pregnancy Test Line Progression
Track whether your test lines are darkening as expected.
Pregnancy Weight Gain Calculator
Healthy weight-gain range based on your pre-pregnancy BMI (IOM guidelines).
Twin Pregnancy Weight Gain Calculator
Weight-gain targets for twin pregnancies by BMI category.
Pregnancy Calorie Calculator
Daily calorie needs in pregnancy by trimester, activity, and twins — based on ACOG's extra-calorie guidance.
Pregnancy Chance Calculator
Estimate your chance of conception per cycle by age and timing.
Plan B Calculator
How effective is Plan B based on when you take it?
Miscarriage Risk Calculator
Understand miscarriage risk by week and maternal age (statistics-based).
Twins Chance Calculator
Your odds of having twins based on age, family history, and fertility treatment.
Baby Eye Color Calculator
Predict your baby's likely eye color from parents' eye colors.
Baby Zodiac Sign Calculator
Your baby's Western star sign, Chinese zodiac animal, birthstone, and birth flower from the due date.
Baby Wake Window Calculator
Your baby's ideal wake window by age, the next nap time from their last wake-up, and expected naps per day.
Twin Ultrasound Schedule Calculator
Your twin scan schedule from your due date and chorionicity: delivery window, surveillance start, scan interval, and expected scan count.
Glucose Test Timing Calculator
Your glucose tolerance test window from your due date: the 24-to-28-week screening dates, the ideal 26-week date, and today's status.
Pregnancy Hydration Calculator
Personalised daily water target for pregnancy by weight, trimester, activity, and singleton or twins — in litres, cups, and fluid ounces.
Animal Pregnancy
Due date calculators for dogs, cats, horses, cattle, and goats.
Dog Pregnancy Due Date Calculator
Whelping date from breeding date (63 days average gestation).
Cat Pregnancy Due Date Calculator
Queening date from breeding date (65 days average gestation).
Horse Pregnancy Due Date Calculator
Foaling date from breeding date (340 days average gestation).
Cattle Pregnancy Due Date Calculator
Calving date from breeding date (283 days average gestation).
Goat Pregnancy Due Date Calculator
Kidding date from breeding date (150 days average gestation).
Parenting
Tools for the first years: feeding, sleep, baby costs, and planning.
Diaper Cost Calculator
Estimate first-year diaper costs by type, brand tier, and diapers per day — with totals through potty training.
Baby Sleep by Age Calculator
Recommended total sleep, night-vs-naps split, and morning wake-up window for babies and young children by age.
Postpartum Recovery Calculator
Personalized recovery timeline from your birth date and delivery type: checkup, lochia, exercise, driving, and period return.
Period After Birth Calculator
Estimate when your first postpartum period will return from your delivery date and feeding pattern — plus when ovulation could resume.
Baby Milestones by Month Calculator
Personalized calendar dates for first smile, rolling, sitting, crawling, and first steps from your baby's birth date — with corrected age for preemies.
Baby Vaccine Schedule Calculator
Personalized CDC 2026 vaccine due dates from your baby's birth date — visit-by-visit calendar with the next visit highlighted.
Baby Teething Calculator
Your baby's teething timeline from their birth date: eruption windows for all 20 baby teeth, with premature-birth adjustment.
Toddler Vocabulary Checker
Compare your toddler's word count with typical vocabulary ranges and CDC milestone floors by age in months, plus two-word combination guidance.
Baby Cost Calculator
Estimate your baby's monthly cost in year one from feeding type, childcare, and diapers per day — with an itemised breakdown and annual total.
Baby Roll-Over Calculator
Your baby's first roll-over window and rolling-both-ways date from their birth date, with premature-birth adjustment and today's status.
Baby Formula Calculator
How much formula your baby needs per day and per feed from their weight, using the AAP's 2.5 oz per pound rule capped at 32 oz per day.
Baby Solids Readiness Calculator
Your baby's AAP around-6-months solids readiness window from their birth date, with premature-birth adjustment and today's status.
Period After Miscarriage Calculator
The usual 4–8 week window for your first period after a miscarriage, from the date of the loss, with earliest ovulation and today's status.
Breastfeeding Caffeine Calculator
Your daily caffeine total while breastfeeding from your usual drink and servings, compared with the 300 mg daily guidance.
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