RediCalc.com

Health & Pregnancy Calculators

Free pregnancy and health tracking tools

Last updated: June 1, 2026

Track your pregnancy journey and health milestones with our free calculators. From due date estimation and ovulation tracking to fetal weight and blood type prediction — all with instant, private results.

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Frequently Asked Questions

How accurate is the due date calculator?

Our due date calculator uses the standard Naegele's rule based on your last menstrual period. It provides an estimate — actual due dates can vary by 1-2 weeks.

What pregnancy tools do you offer?

We offer due date, conception date, ovulation, pregnancy weight gain, pregnancy week, implantation, hCG doubling time, fetal weight, blood type, and water weight calculators.

Are these calculators a substitute for medical advice?

No. These calculators provide estimates for informational purposes only. Always consult your healthcare provider for medical decisions.