Title: age calculation default help
Last modified: March 27, 2025

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# age calculation default help

 *  Resolved [benlashley80](https://wordpress.org/support/users/benlashley80/)
 * (@benlashley80)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/age-calculation-default-help/)
 * hello, I have a field that calculates users age by their birthday using this:
 *     ```wp-block-code
       DATEDIFF(TODAY(), fieldname243 , 'yyyy-mm-dd','y') ['years']
       ```
   
 * this returns -1 before user inputs birthday. how can I set the calculated field
   to be empty until birthday is selected? thanks!
    -  This topic was modified 1 year, 2 months ago by [benlashley80](https://wordpress.org/support/users/benlashley80/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [CodePeople2](https://wordpress.org/support/users/codepeople2/)
 * (@codepeople2)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/age-calculation-default-help/#post-18386760)
 * Hello [@benlashley80](https://wordpress.org/support/users/benlashley80/)
 * I responded to your question in your other thread:
 * [https://wordpress.org/support/topic/age-calculation-default-input/#post-18386757](https://wordpress.org/support/topic/age-calculation-default-input/#post-18386757)
 * Best regards.

Viewing 1 replies (of 1 total)

The topic ‘age calculation default help’ is closed to new replies.

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 * Last reply from: [CodePeople2](https://wordpress.org/support/users/codepeople2/)
 * Last activity: [1 year, 2 months ago](https://wordpress.org/support/topic/age-calculation-default-help/#post-18386760)
 * Status: resolved