Choose your calculator
Miscarriage risk, trying to conceive, or pregnancy tracking.
Miscarriage Risk Calculator
For current pregnancies (under 2 minutes)
Estimate miscarriage risk based on gestational age, maternal age, pregnancy history, fetal heart rate (if available), and a small set of commonly known health factors.
Trying to Conceive After Pregnancy Loss Calculator
For planning a future pregnancy after loss
Estimate the probability of a live birth in a future pregnancy using previous pregnancy history alongside a broad set of maternal, partner, medical, anatomical, BMI, lifestyle, and other factors.
Expanded Miscarriage Risk Calculator
For current pregnancies with additional factors
Estimate miscarriage risk using an expanded set of factors, including conception method (IVF or non-IVF), partner inputs, hCG trends, medical and uterine conditions, infections, BMI, lifestyle, and prior pregnancy history.
hCG Trend Calculator
For understanding hCG patterns over time
Analyze multiple hCG values over time to see how hormone levels change compared with typical clinical patterns.
Pregnancy Weight Gain Calculator
For tracking recommended weight gain during pregnancy
Estimate recommended pregnancy weight gain ranges based on pre-pregnancy BMI and gestational stage, following established medical guidelines.
Pregnancy Due Date Calculator
For estimating your pregnancy due date
Estimate your pregnancy due date based on last menstrual period, conception date, ultrasound timing, or IVF transfer date.
Miscarriage Risk by Week Chart
For understanding how risk changes by gestational week
View how miscarriage risk typically changes by gestational week based on large population studies.
Research-based calculators · No accounts · Anonymous use
How Pregnalyze Works
Use research-based tools to better understand different aspects of pregnancy, miscarriage risk, fertility, and pregnancy-related metrics.
Choose the tool that fits your situation
Select the calculator or chart that matches where you are in your journey — during pregnancy, after pregnancy loss, while trying to conceive, or when tracking your pregnancy.
Some tools provide personalized estimates based on your inputs, while others offer reference charts based on population-level data.
Results based on medical studies
Pregnalyze tools are built using published medical studies and population research — not generative AI.
Each calculator applies statistical models derived from peer-reviewed literature to estimate probabilities, ranges, or expected values.
Clear, transparent outputs
Results are presented with context and factor breakdowns to help you understand what may influence the estimate.
These tools are designed to support clarity and informed discussion — not to diagnose or replace medical care.
These tools are designed to support clarity and informed discussion — not to diagnose or replace medical care.
Why We Built Pregnalyze
Created by people who understand the need for clear, evidence-based answers
We are a small, data-driven team focused on pregnancy, miscarriage, and fertility outcomes. We analyze published medical studies, clinical guidelines, and population-level data — not to replace medical care, but to bring clarity to questions that are often answered with averages, reassurance, or outdated information.
During our own journeys, we encountered the same problem repeatedly: there were no tools that translated medical research into personalized, understandable estimates. Whether the question was about miscarriage risk, fertility after loss, pregnancy timing, or expected changes during pregnancy, the answers were either vague or inaccessible outside clinical settings.
Medical research already contains much of this information — spread across journals, meta-analyses, and large population studies. We built Pregnalyze to bridge that gap: turning peer-reviewed evidence into structured, transparent calculators that help people better understand their situation and have more informed conversations with their healthcare providers.
Pregnalyze is designed for moments of uncertainty — when you're pregnant, trying to conceive, or tracking pregnancy-related metrics — and want data grounded in research, not speculation.
Evidence-Based Methodology
Every calculator on Pregnalyze is built using peer-reviewed medical studies, validated statistics, and established clinical research — not intuition, opinions, or generative AI.
Transparent Limitations
Our tools provide statistical estimates only. They do not diagnose conditions or replace medical advice. We are explicit about what each calculator can and cannot tell you.
Built with Real-World Perspective
Pregnalyze is created by people who know how overwhelming medical uncertainty can feel, and who are committed to providing clear, responsible tools that respect both science and lived experience.
Our mission: To provide clear, evidence-based calculators for pregnancy, miscarriage, and fertility — supporting understanding, transparency, and informed decision-making.