< Calculators

Menstrual Period Planning Calculator

Have an important date on your calendar - vacation, party, first date, biz travel - and want to know if your period will be coming along? Forecast with this handy calculator! But remember, this is a prediction based on your past menstrual cycles: future cycles can and do deviate.

Member, but not logged in? Simply login and your tracking history will fill in the last period and average cycle length fields below!

Will I have my period then?

New to MyMonthlyCycles? Try our Period Calculator, which forecasts your future periods (up to 18 months in advance) and can show if your period is late.