Your pregnancy journey,
guided by science.
Free pregnancy calculators, baby tools, and expert guides for every stage from TTC through birth.
For educational purposes only, not medical advice
Trusted, Evidence-Based Pregnancy Tools
Every tool on Pregnancylogics is built on peer-reviewed medical research and clinical guidelines.
Based on ACOG Medical Guidelines
All calculators follow American College of Obstetricians and Gynecologists standards for accuracy.
Used by Thousands of Expecting Parents
Trusted by parents worldwide to plan, track, and celebrate every stage of pregnancy.
Accurate, Research-Backed Calculations
Every formula is validated against peer-reviewed obstetric research and clinical standards.
100% Free, Always
Every tool, calculator, and guide is completely free with no hidden fees, no subscriptions.
How It Works
Get accurate pregnancy results in seconds with no sign-up required.
Enter Your Details
Input your last period date, cycle length, or other relevant details into any of our tools.
Get Instant Results
Our medically-validated formulas calculate your results instantly with no waiting, no account needed.
Save & Track Your Journey
Create a free account to save your results, get week-by-week updates, and track your pregnancy.
Pregnancy & Fertility Tools
All calculators use medically-validated formulas. Results are instant with no account required.
Due Date Calculator
Calculate your estimated due date using Naegele's Rule. Get your full pregnancy timeline.
Ovulation Calculator
Find your 6-day fertile window and peak ovulation day based on your cycle.
Pregnancy Week Calculator
See exactly how many weeks and days pregnant you are, your trimester, and baby size.
Fertility Window Calculator
Generate a 3-cycle fertility forecast with fertile windows and peak days.
Weight Gain Calculator
Track healthy pregnancy weight gain based on ACOG guidelines and your BMI.
IVF Due Date Calculator
Calculate your due date after embryo transfer. Supports 3-day and 5-day transfers.
Twin Pregnancy Calculator
Specialized timeline and milestones for twin pregnancies.
Period Cycle Calculator
Predict your next 6 periods and fertile windows based on your cycle.
Contraction Timer
Track labor contractions & 5-1-1 rule
Based on your stage, you may also need:
Baby Names & Engagement Tools
Discover baby names, track development, and stay organized throughout your pregnancy.
Baby Name Generator
Generate unique baby names by gender, origin, and style with meanings.
Baby Names by Meaning
Search and filter names by meaning, cultural origin, and theme.
Gender Predictor
Fun gender prediction using Chinese calendar and old wives tales.
Baby Growth Tracker
Week-by-week baby development, size comparisons, and milestones.
Pregnancy Checklist
Complete trimester-by-trimester pregnancy to-do lists.
Baby Planning & Budget Tools
Build your registry, plan your budget, and prepare for baby's arrival with our planning tools.
Baby Wishlist Builder
Build your baby registry with priorities, prices, and purchase tracking.
Newborn Essentials Checklist
Everything you need for your new baby, organized by category.
Hospital Bag Checklist
Complete packing list for mom, baby, and partner.
Baby Budget Calculator
Plan your first-year baby budget with personalized cost estimates.
Baby Cost Estimator
Detailed breakdown of baby costs from pregnancy through year one.
Your Pregnancy Timeline
Follow your baby's development from week 1 to week 40. Every week brings new milestones.
Week 4
Embryo implants
Week 6
Heartbeat detected
Week 8
Fingers forming
Week 10
Vital organs form
Week 12
End of 1st trimester
Week 16
Gender visible
Week 20
Anatomy scan
Week 24
Viability milestone
Week 28
End of 2nd trimester
Week 32
Baby practices breathing
Week 36
Baby is full term soon
Week 40
Due date! 🎉
Save your results and get personalized updates each week
Popular Pregnancy Tools
Quick access to the most-used pregnancy and baby tools on Pregnancylogics.
Guides & Product Reviews
Expert-written guides to help you make the best decisions for your baby and family.
Best Baby Strollers 2026
Expert reviews and buying guide for top-rated strollers.
Read Full GuideNewborn Essentials List
Complete guide to everything you need for your new baby.
Read Full GuideHospital Bag Guide
What to pack for labor, delivery, and postpartum recovery.
Read Full GuidePregnancy Week by Week
Baby development and symptoms from conception to birth.
Read Full GuideBest Baby Monitors
Compare video, audio, and smart monitors for every budget.
Read Full GuideBest Breast Pumps
Top wearable and electric pumps reviewed for comfort and output.
Read Full GuideBest Pregnancy Pillows
Find supportive pillows for better sleep in every trimester.
Read Full GuideBest Travel Baby Products
Parent-tested gear to simplify trips with your baby.
Read Full GuideRecommended Products
SponsoredBest Baby Strollers 2026
Top-rated strollers reviewed by parents and experts.
Top picks for this stage
Newborn Essentials Kit
Everything you need for the first weeks at home.
Top picks for this stage
Hospital Bag Must-Haves
Curated picks for labor, delivery, and recovery.
Top picks for this stage
* Affiliate disclosure: Some links may earn us a small commission at no extra cost to you.
About Pregnancylogics
We built Pregnancylogics because every expecting parent deserves accurate, accessible, and simple tools without paywalls, subscriptions, or confusion.
Pregnancylogics was born from a simple belief: the most important journey of your life should be supported by the best tools, and those tools should be free.
From calculating your due date to building your hospital bag checklist, every feature is designed with care and backed by clinical guidance.
A world where every parent has the tools they need, free, forever.
We envision a global platform where pregnancy guidance, planning tools, and health calculators are universally accessible regardless of location, language, or income.
All tools remain free forever. The dashboard is currently free and may carry a small fee in the future to support long-term improvements.
Simplify the science of pregnancy
Our mission is to translate complex medical timelines, fertility windows, and pregnancy milestones into clear, actionable insights.
- Clinically-informed content
- Simple, jargon-free language
- Personalized to your journey
Free tools, always. Advanced features, sustainably.
Every calculator, checklist, and planner on Pregnancylogics is and will remain completely free.
The personalized dashboard is currently free for all users. A small, transparent fee may be introduced in the future to keep improving the platform.
All Tools
Free forever
Dashboard
Free now
Community
Always open
Save your results and get personalized updates
Create a free account to track your pregnancy week by week, save calculations, and access your personalized pregnancy dashboard.