CalcAdda

Women's Health Calculator

Track your cycle or estimate your baby's arrival date.

28 Days

Understanding Ovulation & Pregnancy Dates

Knowing your ovulation window significantly increases your chances of conception. Ovulation typically happens about 14 days before your next period starts.

Naegele's Rule for Due Date

This standard rule adds 280 days (40 weeks) to the first day of your last menstrual period (LMP) to estimate the due date.

Frequently Asked Questions

Can I trust the ovulation calculator 100%?

Calculators provide estimates based on averages. Stress, diet, and health conditions can shift your actual ovulation day.

How is the Due Date calculated?

We use Naegele's Rule: Add 7 days to the first day of your last period, then subtract 3 months and add 1 year.