How to set your date of birth When setting up your OkCupid profile you are asked to enter your date of birth. This will display your age, not your specific birthday to other users. This is a helpful way to align your age preferences with other users. Keep in mind once you set your birthday you cannot change it. For your security and your privacy protection we do not allow you to change your date of birth on our site and in the app once it is set. As you venture out in the dating, hook-up or friendship world we know you want honesty, so be honest with your age as beauty is ageless! If you entered your date of birth incorrectly, by accident of course, and need to change it please email support@okcupid.com.