Free Pregnancy & Parenting Calculators
Quick, accurate answers for every stage — from due dates to developmental milestones. No signup. No fees. No nonsense.
Our Free Calculators
Choose a tool below — all free, all instant.
Ovulation Calculator
Find your fertile window and most likely ovulation date. Enter your last period and cycle length for a personalised 3-month fertility calendar.
Find Fertile Days Most PopularDue Date Calculator
Enter your last period date to find your estimated due date, current pregnancy week, trimester, and week-by-week fetal milestones.
Find My Due DateBaby Name Selector
Browse 220+ curated names with meanings, origins, and popularity trends. Filter by gender, origin, syllables, and style. Save favourites and compare names side-by-side.
Explore Names NewBaby Expense Calculator
Plan your baby's first-year costs across 7 categories. Adjust sliders for your situation, compare budget vs. premium scenarios, and export your budget as CSV or PDF.
Plan My BudgetChildcare Cost Calculator
Estimate monthly and annual daycare, nanny, or in-home care costs by location. Includes FSA tax savings estimate.
Estimate CostsBaby Age Calculator
Calculate your baby's exact age in weeks, months, and days. Includes corrected age for premature babies and developmental milestones.
Calculate Baby's AgeGrowth Percentile Calculator
Enter your baby's weight and height to see their CDC growth percentile. Understand where they fall on the official growth charts.
Check Growth %Sleep Schedule Builder
Build a personalised nap and bedtime schedule for your baby by age. See recommended wake windows and total sleep hours.
Build a Schedule NewBaby Milestone Tracker
Track your baby's development from birth to 3 years using CDC and AAP guidelines. Check off milestones by age, see your progress, and know what to watch for.
Track MilestonesCommon Questions
Are these calculators free?
Yes — completely free, always. No account, no credit card, no hidden fees.
How accurate are the results?
Our calculators use the same standard formulas used by healthcare providers (Naegele's Rule for due dates, CDC growth charts for percentiles). Results are estimates — always confirm with your doctor.
Do I need to create an account?
No. All calculators work instantly with no login required. Some features (like saving a sleep schedule) use your browser's local storage — nothing is sent to any server.
Are these calculators safe to use during pregnancy?
Yes. Our tools provide informational estimates only. They are not medical devices and do not replace your healthcare provider's advice. Always consult your doctor or midwife for medical decisions.