Half Birthday Calculator
Find the date exactly six months from a birthday.
Next half birthday
Thursday, October 15, 2026
159 days away
Half birthday lands on October 15 every year.
Next full birthday: Thursday, April 15, 2027 (341 days).
Useful for kids whose birthdays land on holidays, summer break, or a few days from a sibling's. School celebrations and "half-cake" parties usually use this date.
About
Some birthdays land on holidays, summer break, or three days after a sibling's. The half birthday is six months later, which is a common excuse for a 'half-cake' party or for schools to celebrate kids whose actual birthday falls during a break.
How to use
- Pick the birthday.
- See the half birthday and the next time it lands.
FAQ
What if the birthday is February 29?+
Half of February 29 is August 29 most years. The tool just adds six months and uses whatever date that lands on.