Ovulation Calculator

Wondering when your most fertile days are? Use our simple tool to find out.

Please select the first day of your last menstrual period:

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember 12345678910111213141516171819202122232425262728293031 201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050

Usual number of days in your cycle:
2021222324252627282930313233343536373839404142434445

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