SmartCalculators

Pregnancy & Fertility

Pregnancy · Ovulation

Ovulation Calculator

Estimate your next ovulation date, ASRM 6-day fertile window, and the earliest day a home pregnancy test could read positive. Plan three cycles ahead with a stateless calendar visualization.

Pregnancy Calculator

Calculate your due date, current gestational age, and pregnancy milestones from your last menstrual period, conception date, IVF transfer, or known due date. Buddhist Era dates supported in Thailand.

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Pregnancy & Fertility

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Pregnancy · Ovulation

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Frequently Asked Questions

Are these calculators free?

Yes. Every calculator on this page runs in your browser, is free to use and needs no account.