🗓️ Women's Health Tool
Period Calculator
Track your menstrual cycle and predict your next 6 periods. Essential for family planning, tracking symptoms, and anticipating your cycle.
Predict Next Periods
Your Next Period
--
Ends On
--
Next Ovulation
--
| Month | Period Dates | Fertile Window |
|---|
How the Period Calculator Works
A normal menstrual cycle lasts between 21 and 35 days, with 28 days being the most common average. Your period (menstruation) is day 1 of the cycle.
This tool adds your average cycle length to your last period date to predict future periods. It also calculates your fertile window by estimating ovulation at 14 days before the end of each cycle.