Find your fertile days, predict ovulation and plan around your periods. Your dates stay in your browser.
Your ovulation day and fertile window for 6 cycles
Your fertile days on a 3-month calendar
Start and end dates of your next 6 periods
When implantation most likely happens
The best day to test for an accurate result
You are most likely to conceive from sex in the few days before ovulation and on the day itself. The NHS suggests having sex every 2 to 3 days, so you do not need to time it exactly. If you are under 35 and have been trying for 12 months, or 35 or over and trying for 6 months, talk to your doctor.
These calculators are for planning a pregnancy and should not be used as contraception.