Most Popular Women's Health & Pregnancy Calculators
Trimester Calculator
Free trimester calculator shows exactly when your first, second, and third trimesters start and end. Enter LMP, due date, or ultrasound to get trimester dates.
Pregnancy Calculator
Free pregnancy calculator to find your EDD, gestational age in weeks and days, trimester dates, and baby size. Works from LMP, ultrasound, IVF, or EDD.
HCG calculator
Use our hcg calculator to estimate doubling time from two or more beta hCG results, analyze trends over dates, and compare with early pregnancy patterns.
Implantation Calculator
Use our implantation calculator to estimate your likely implantation window, map days past ovulation (DPO), and plan testing with a clean timeline and tips.
Pregnancy Due Date Calculator (EDD) by LMP or Conception
Use our pregnancy due date calculator to estimate your EDD from LMP, ultrasound, or conception/IVF. See gestational age, trimester dates, and calendar export.
Conception Date Calculator
Use the conception date calculator to estimate conception from LMP or ovulation. Adjust cycle length and see implantation timing, best test day, and due date.
All Women's Health & Pregnancy Calculators
Conception Date Calculator
Use the conception date calculator to estimate conception from LMP or ovulation. Adjust cycle length and see implantation timing, best test day, and due date.
Accurate Cycle Length Calculator
Compute an accurate average from recent dates with the cycle length calculator. Exclude anomalies, view rolling averages, and export your results if needed.
Fertile Window Calculator
Use the fertile window calculator to find fertile days around ovulation for timing. Includes fertile range, probability bands, and calendar for planning.
Fertility Calculator
Use our fertility calculator to predict ovulation, fertile window, and the next period from LMP and cycle length or irregular cycles. See peak days and export.
Gestational Age Calculator
Use our gestational age calculator to estimate weeks pregnant and your due date. Supports LMP, ultrasound, conception, IVF. Privacy-first and mobile-friendly.
HCG calculator
Use our hcg calculator to estimate doubling time from two or more beta hCG results, analyze trends over dates, and compare with early pregnancy patterns.
Implantation Calculator
Use our implantation calculator to estimate your likely implantation window, map days past ovulation (DPO), and plan testing with a clean timeline and tips.
Accurate IVF Calculator
Use our ivf calculator to plan your cycle timeline. Enter retrieval or transfer date to see embryo age, due date, beta hCG window, and ultrasound range.
Accurate IVF Due Date Calculator
Estimate due dates from 3‑day or 5‑day transfers with the IVF due date calculator. See projected milestones and trimester start dates in a simple timeline.
Luteal Phase Calculator
Use the luteal phase calculator for instant, personalized results. Estimate phase length, adjust for cycle variations, and use the irregular cycle helper.
Menopause Age Calculator
Use our menopause age calculator to estimate when menopause may begin based on age, cycle changes, smoking, and family history. View a clear range and tips.
Accurate Menopause Calculator
Identify perimenopause patterns with the menopause calculator. Review symptoms and likely stage, get practical tips, and plan follow‑up with simple reminders.
Menstrual Cycle Calculator
Use our menstrual cycle calculator to predict your next period, estimate ovulation, and see your fertile window. Track cycle length and variability with ease.
Accurate Next Period Calculator
Use our next period calculator to estimate your upcoming start date from your average cycle length or past period starts. Review a confidence window and plan.
Ovulation Calculator
Use the ovulation calculator for personalized results. Predict your ovulation day, adjust the luteal phase, and use the calendar view for fertility planning.
Accurate Period Calculator
Use our period calculator to predict your next period, ovulation day and fertile window from your cycle and period length. Mobile-friendly, private and free.
Period Tracker Calculator
Use our period tracker calculator to predict your next period, estimate ovulation and fertile days, and plan ahead. Inputs stay private on your device.
Pregnancy Calculator
Free pregnancy calculator to find your EDD, gestational age in weeks and days, trimester dates, and baby size. Works from LMP, ultrasound, IVF, or EDD.
Pregnancy Due Date Calculator (EDD) by LMP or Conception
Use our pregnancy due date calculator to estimate your EDD from LMP, ultrasound, or conception/IVF. See gestational age, trimester dates, and calendar export.
Pregnancy Test Calculator
Use our pregnancy test calculator to find the best day to test from LMP, ovulation, or IVF transfer. See DPO, implantation window, and early vs. reliable dates.
Pregnancy Week Calculator
Use the pregnancy week calculator to see your current week and days, trimester, and estimated due date. Choose LMP, due date, conception, or ultrasound dating.
Pregnancy Weight Calculator
Use the pregnancy weight calculator to estimate a healthy total weight gain range based on your pre‑pregnancy BMI and whether you’re carrying one baby or twins.
Accurate Pregnancy Weight Gain Calculator
See trimester‑based ranges by BMI with the pregnancy weight gain calculator. Monitor weekly targets, adjust for twins, and track progress with clear guidance.
Trimester Calculator
Free trimester calculator shows exactly when your first, second, and third trimesters start and end. Enter LMP, due date, or ultrasound to get trimester dates.
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Why Use Our Women's Health & Pregnancy Calculators?
Our women’s health and pregnancy calculator collection offers 24 tools for calculating your pregnancy due date, tracking trimester timelines, monitoring HCG levels, predicting ovulation and implantation dates, and following prenatal milestones week by week. Each calculator is built on ACOG (American College of Obstetricians and Gynecologists) guidelines to provide medically informed estimates.
Who Are These Calculators For?
Expectant mothers tracking pregnancy progress, women planning conception and monitoring fertility, and healthcare providers looking for quick prenatal reference tools. Our trimester calculator and due date calculator are the most popular tools in this category.
How Our Calculators Work
Enter your last menstrual period (LMP) date or known conception date, and our calculators determine your estimated due date using Naegele's rule, current trimester, gestational age, and key milestones. HCG calculators help interpret early pregnancy lab results by comparing doubling times to expected ranges.
Key Benefits
- Medical-grade accuracy based on WHO and CDC guidelines
- Instant results with detailed explanations and recommendations
- 100% private — all calculations run locally in your browser
- No registration, no personal data collected
Frequently Asked Questions
How is a pregnancy due date calculated?
What trimester am I in right now?
What are normal HCG levels in early pregnancy?
When does implantation occur after ovulation?
Are online pregnancy calculators accurate?
Explore More Health Calculators
Discover our complete collection of 304 health calculators across 9 categories