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Free Fertility & Pregnancy Calculators
Free, easy-to-use tools to help you track your cycle, fertility, and pregnancy journey
Period Calculator
Predict when your next period will arrive
Track period
Ovulation Calculator
Figure out your most fertile days
Find fertile days
HCG Calculator
Track your beta hCG doubling time during early pregnancy
Check hCG
Pregnancy Due Date Calculator
Estimate your expected delivery date
Estimate Due DateFrequently Asked Questions
Are these calculators free?
Yes, absolutely. All four tools on this page are 100% free to use as often as you need, with no hidden fees.
Do I need to create an account?
No account is required. You can use any of these web tools instantly without signing up, logging in, or sharing your email address. Your data is processed locally in your browser and is completely cleared once you close the page.
How accurate are online fertility calculators?
Accuracy depends on the information you input. Biological factors like stress, illness, and subtle hormonal shifts can vary from month to month, so results should be viewed as personalized projections rather than absolute certainties.
Can I track this in the Premom app?
Yes. The free Premom app offers advanced, personalized tracking. You can log daily symptoms, scan ovulation or pregnancy test strips, map trends over time, and keep your journey securely organized on your smartphone.
Begin Your Fertility Journey with Premom
Download the Premom app to track your cycle, understand your fertility, and take a more informed approach to getting pregnant naturally.
