How rare is your birthday?
One day that’s all yours.
See where it ranks in U.S. birth records.
366 possible birthdays.
One interesting place to start.
out of 366 birthdays
A popular day to arrive.
Rarer than 0.3% of other birthday dates.
85,712,738 U.S. births. 1994–2014 · CDC/NCHS + SSA. Sources & method
See the whole calendarA year of birthdays, at a glance.
Every square is a day. Deeper color means more birthdays.
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September 19 #2 of 366 · 0.301% of recorded births
Who has the rarer birthday?
A friend, your partner, your birthday twin. Settle the curiosity.
Birthday gifts to print
Birthday prints
Free basic PDF or a personalized digital print for $9 USD.
See the prints and previewGolden birthday gifts
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Get ideas and free printablesA little more birthday curiosity.
More to discover about your birthday
Explore birthday records and calendar tools. Find your birth weekday or compare birthday milestones.
What weekday was I born?
Find the weekday from your full Gregorian birth date.
Diamond and platinum birthdays
Compare milestone meanings and find their dates under clear rules.
Find your half birthday
Compare six months with halfway between birthdays.
Find your golden birthday
When your age matches your birth day number.
How many share your birthday?
Historical birth counts and expected matches.
What are the odds of a match?
Explore the birthday paradox with a group.
Curiosity deserves a clear answer.
See where the birth records come from, how we calculate each result, and what the numbers can tell you.