Fitness and Health Calculators
Fertility Calculator
Estimate fertile days, ovulation timing, peak fertility dates, and the next period from your cycle pattern.
Calculator
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11 Mar 2026
Estimated ovulation day
6 Mar 2026
Fertile window starts
12 Mar 2026
Fertile window ends
10 Mar 2026
Peak fertility starts
11 Mar 2026
Peak fertility ends
Day 11
Current cycle day
25 Mar 2026
Estimated next period
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Ovulation Calculator
Estimate ovulation, fertile days, and the next period date from your cycle length and luteal phase settings.
Due Date Calculator
Estimate your pregnancy due date from your last period or conception date, with gestational age and trimester timing.
Pregnancy Weeks Calculator
Calculate how many weeks pregnant you are from your last period or due date, with trimester and weeks-remaining estimates.
BMI Calculator
Check body mass index with metric or imperial units and compare the result with standard adult BMI ranges.