Period Calculator (28-Day Cycle, 3-Day Period)
Calculate your next period and ovulation dates with a 28-day cycle length and 3-day period duration. Free online menstrual cycle calculator.
Understanding Your 28-Day Cycle
A 28-day menstrual cycle with a 3-day period duration is considered average. Understanding your cycle can help with family planning and tracking your reproductive health.
Cycle Phases
- Menstrual Phase: 3 days
- Follicular Phase: ~13 days
- Ovulation Phase: ~24-36 hours
- Luteal Phase: ~14 days
Key Days in Your Cycle
- Period Start: Day 1
- Fertile Window: Days 10-15
- Ovulation: Day 14
- Next Period: Day 28
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About this Calculator
Calculate your next period and ovulation dates with a 28-day cycle length and 3-day period duration. Free online menstrual cycle calculator.
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