Ovulation Calculator
Predict your ovulation date and fertile window based on your menstrual cycle for family planning.
How to Use This Ovulation Calculator
- 1Enter the first day of your last period
- 2Enter your cycle length (default 28 days)
- 3Click Calculate
- 4See your fertile window and next ovulation
Formula
Ovulation = Last Period + (Cycle Length - 14 days). Fertile window = Ovulation ± 3 days.
Frequently Asked Questions
Related Calculators
❤️
Pregnancy Due Date Calculator
Calculate your estimated due date, current pregnancy week and trimester from your last period date.
🔧
Age Calculator
Calculate exact age in years, months and days from any birth date. Shows total days and next birthday.
🔧
Date Difference Calculator
Calculate the exact difference between two dates in years, months, days, weeks and hours.
About Ovulation Calculator
Calculate your most fertile days based on your cycle length and last period date. Useful for both conception planning and natural family planning.