Pregnancy & Fertility Calculators - Due Date, Ovulation

Free online pregnancy and fertility calculators. Ovulation calculator, pregnancy due date calculator, and date calculator.

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Ovulation Calculator

Calculate your fertile window, ovulation date, and cycle phases.

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Pregnancy Calculator

Estimate due date, track trimesters, and view pregnancy milestones.

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Date Calculator

Calculate date differences, add or subtract days, and count work days.

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Guides & Tutorials

How Many Days Between Two Dates: The Complete Date Calculator Guide → How Accurate Are Due Dates? The Truth About Your 40-Week Estimate → Understanding Your Fertility Window: The 6-Day Window Explained → 5 Signs of Ovulation You Might Be Missing (And How to Track Them) → Pregnancy Nutrition Guide: What to Eat Each Trimester → Pregnancy Week by Week: What's Happening Inside (And What You Should Be Doing) → Pregnancy Due Date Calculator: How to Estimate Your Baby's Arrival →