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Period & ovulation calendar

Enter the first day of your last period and your usual cycle length to see your next periods, fertile window and ovulation day, months ahead.

Calendar

PeriodFertileOvulationPMS days

Cycle & Ovulation Calendar – free online tool

See upcoming periods, ovulation and fertile days on a simple calendar based on your cycle. Built by TNG (The Noor Group). Works on phone, tablet and desktop.

How to use Cycle & Ovulation Calendar

  1. Enter your last period date
  2. Set cycle and period length
  3. See your predicted calendar

Frequently asked questions

How accurate is ovulation prediction?

It's an estimate based on average cycles. Ovulation tests or tracking temperature give more certainty.

Is Cycle & Ovulation Calendar free?

Yes. It's 100% free with no sign-up, no watermark and no usage limits.

Is my information stored or shared?

No. Calculations run in your browser and nothing is sent to a server.

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