Safe Days Calculator
Identify the days with the lowest risk of pregnancy during your cycle.
Safe Days Calculator
Private Period & Cycle Tracker
Cycle, Ovulation & Fertility
How to calculate safe days
Estimate the days with the lowest risk of pregnancy based on your menstrual cycle length.
1
Cycle length
Your cycle length helps determine the fertile window.
2
Last period
We use this to establish the start of the cycle.
3
Safe days prediction
The days outside the fertile window and sperm lifespan are considered 'safe'.
Common Questions
Are safe days 100% effective?
No, the calendar method is not a reliable contraceptive on its own. Hormones can fluctuate.
What is Avoid Mode?
Bloom Private offers a mode dedicated to tracking these days securely without saving data in the cloud.
Steps For
Natural planningCycle trackingAvoid pregnancy