Quick Calculators

Health & Pregnancy Calculators

Cycle tracking and pregnancy-dating tools to help you understand key dates and milestones — from ovulation through due date and beyond.

Period Calculator

Track your menstrual cycle, predict your next period, and identify your fertile window.

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Pregnancy & Due Date Calculator

Calculate your estimated due date, current gestational age, and trimester milestones.

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Ovulation Calculator

Predict your next period and find your exact fertile window to maximize conception chances.

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Pregnancy Weight Gain Calculator

Calculate your recommended total and weekly weight gain based on pre-pregnancy BMI.

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Conception Calculator

Work backward from your due date or ultrasound to find your exact date of conception.

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IVF Due Date Calculator

Calculate your accurate due date based on your 3-day or 5-day embryo transfer date.

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VBAC Calculator

Estimate your probability of a successful Vaginal Birth After Cesarean using the MFMU model.

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Miscarriage Probability Calculator

Track how the statistical probability of a successful pregnancy increases every day.

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hCG Doubling Time Calculator

Calculate the doubling time of your hCG levels to track the early health of your pregnancy.

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Cycle & Conception

The Period and Ovulation calculators estimate your cycle and fertile window, and the Conception Calculator works backward from a due date or ultrasound to estimate when conception likely occurred.

Pregnancy Dating & Milestones

The Pregnancy & Due Date Calculator and IVF Due Date Calculator estimate your due date and current gestational age using standard dating methods, the Pregnancy Weight Gain Calculator gives a recommended range based on pre-pregnancy BMI, and the hCG Doubling Time and Miscarriage Probability calculators track early pregnancy indicators using population-level statistics. The VBAC Calculator estimates likelihood of a successful vaginal birth after a prior cesarean using the published MFMU model.

Talk to Your Provider

Every tool here gives a statistical estimate, not a personal diagnosis or medical guarantee — pregnancy dating, risk, and delivery decisions should always be confirmed with your OB-GYN or midwife, who has your actual history and test results.