https://legacy.forums.gravityhelp.com/topic/calculate-age-from-date Gravity Support Forums Topic: Calculate age from date en-US Mon, 20 Apr 2026 08:27:30 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/calculate-age-from-date#post-37746 Wed, 12 Oct 2011 18:03:01 +0000 Carl Hancock 37746@https://legacy.forums.gravityhelp.com/ <p>This isn't currently a built in feature. It could be accomplished as a customization.</p> <p>- Add a hidden field to your form and position it below the date field<br /> - Edit this hidden field and give it a Field Label of "Age"<br /> - Save your form</p> <p>Now use the gform_pre_submission hook and some custom code to then read the value of the date field, calculate the age, and store it in your hidden field.</p> <p>Documentation for the gform_pre_submission hook can be found here:</p> <p><a href="http://www.gravityhelp.com/documentation/page/Gform_pre_submission" rel="nofollow">http://www.gravityhelp.com/documentation/page/Gform_pre_submission</a> </p> https://legacy.forums.gravityhelp.com/topic/calculate-age-from-date#post-37724 Wed, 12 Oct 2011 16:27:34 +0000 placson 37724@https://legacy.forums.gravityhelp.com/ <p>Is there a way to calculate the person's age based on a date field (MM/DD/YYYY)? I'd like to have the user enter their date of birth and after entering allow a hidden field or read-only field appear that shows their calculated age. </p>