Birthday calculator
Your next birthday is this year if it has not passed and next year if it has. The tool also gives the weekday it falls on, the days remaining, and the age you will be turning.
How to find your next birthday
Birthdays advance by one weekday each year and two across a leap year, so the same date cycles through the week on a 28-year pattern. Monday, Tuesday, Wednesday, Thursday, Saturday, Sunday, and so on. That is why a birthday falls on a weekend roughly two years in seven rather than evenly, and why the "it is on a Saturday again" feeling arrives at irregular intervals.
Questions
This year if it is still ahead, otherwise next year. The date and weekday are both shown.
A common year is 52 weeks and one day, so the date advances one weekday. A leap year advances it two.
Roughly two years in seven, but unevenly because of the leap-year pattern.
It clamps to 28 February in common years here. Some people mark 1 March instead.
Shown in the days-to-go row, counting from today.