Ovulation Calculator
Trying to get pregnant? Our Ovulation Calculator helps you determine the days you're most likely to conceive.
If you're actively trying to get pregnant, knowing when you will ovulate will greatly enhance your chance of success!
Our Ovulation Calculator will help you predict the dates you're most likely to ovulate based on your cycle length. Use this calculator as your guide for when to start testing with The FIRST RESPONSE® Easy-Read Ovulation Test, which is over 99% accurate in predicting the 2 days you're most likely to become pregnant.
Enter the day of your last period and the number of days in your cycle (anywhere from 20 to 45 days). Our Ovulation Calculator will tell you the 2 days you're most likely to conceive.
Please note: These dates are approximate and are best used as a guideline for when to begin testing with the FIRST RESPONSE® Easy-Read Ovulation Test. Additionally, these dates are based on a regular menstrual cycle. If your menstrual cycle is irregular, you may have more difficulty pinpointing your day of ovulation based on the calendar alone. With our Daily Ovulation test, you can test daily for 20 consecutive days from the day after your period ends.
Why not download the desktop version of our First Response Ovulation Calculator to your desktop.
With more features, you can see when your most fertile days are every time you turn on your computer. You can even get messages by SMS or Email if you wish so that you are always kept informed of your most fertile days.
Click here to download now (Windows Installer, 2.5MB)
How to use the First Response Desktop Ovulation Calculator.
The First Response Ovulation Calculator is an easy to use tool that will allow you to track your cycle and help you plan for a pregnancy.
First Step – Your cycle
1. Simply click on Profile
2. In ‘Last Period Details’, enter the date of your last period and your estimated cycle length.
3. Click ‘Next’ and ‘Calculate’.
4. You can now check the dates in the ‘calendar’ section.
The widget will give you the estimated days you are most fertile, the date when you should start testing with the First Response Early Pregnancy Test and your next period date.
You will be able to track your cycles over the next 9 months based on the cycle length you gave.
Second step – Get alerts
We know that you are not always in front of your computer, that is why we have set up an ovulation alert function on SMS and email.
1. Click on Profile
2. In Personal Details, enter your name and click Next
3. You will have the chose to receive the alert by email and SMS and receive our newsletter. Just make sure the ticks are on. Click Next
4. Add your email address and telephone number (without the 0). Then Click Next and Calculate.
Third Step – Track your cycles
The widget can also give you the possibility to keep a record of your periods and track your cycle lengths over several months.
1. Click on History
2. Enter your last period date and current period date. The widget will automatically calculate your cycle length.
3. Click Save.
4. You can update this section any time. It will not affect the calendar.
Fourth Step – Update the calendar
We advise you to revise your last period date and cycle length after each period.
And Finally
You can also have access to the News section of the First Response website, join our facebook page and buy the tests online.
Copyright of Church & Dwight UK ltd.
We won’t pass your details onto third party companies. You have the right to access and change any of your personal details that you sent to us. You can unsubscribe from receiving text and email by sending an email or SMS back. Information is provided in text and SMS. You will not be charged for receiving the text or charged for unsubsubcribing by SMS.
The SMS and email functions are only available for UK residents.
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The widget will only give you an indication of ovulation dates and time to test for pregnancy. We calculate the dates on the basis of the dates and cycle length you gave us. They do not replace a one-to-one relationship with a qualified health care professionals and are not intended as medical advice.