Half birthday calculator
Find the date exactly six months after your birthday, and how long until the next one.
We don’t save your birthdate or link it to you. It is calculated in your browser.
How it works
Your half birthday falls six months after your birthday. If that month is shorter than your birthday’s day, it moves to the last day of the month, so an August 31 birthday has its half birthday on February 28 (or 29 in a leap year).