Famous People Born in September: Celebrities, Historical Figures and Age Facts

Jessica David · 10 August 2026

September produces an unusually well-documented crowd. Between the singers, the athletes, the physicists and the founders, the month has enough recognisable birthdays that almost every September date is shared with somebody whose name you would know. This guide collects the best of them, with real birth dates rather than approximations, and works out exactly how old each person is right now in 2026.

The ages below are calculated the honest way — counting whole calendar years first, then the remaining whole months, rather than subtracting birth years and hoping. That distinction matters: a straight year subtraction is wrong for anyone whose birthday has not yet arrived this year, which in September's case is a large share of the list depending on when you read it.

Most famous people born in September

Here are ten of the most recognisable people born in September, each with a verified birth date and their exact age today in years and months:

Beyonce — born 4 September 1981, which makes Beyonce 44 years and 11 months old today. The singer with more Grammy wins than any other artist.
Zendaya — born 1 September 1996, which makes Zendaya 29 years and 11 months old today. The actor of Euphoria and Dune.
Will Smith — born 25 September 1968, which makes Will Smith 57 years and 10 months old today. The rapper turned Academy Award-winning actor.
Serena Williams — born 26 September 1981, which makes Serena Williams 44 years and 10 months old today. The winner of 23 Grand Slam singles titles.
Bruce Springsteen — born 23 September 1949, which makes Bruce Springsteen 76 years and 10 months old today. The songwriter behind Born to Run.
Idris Elba — born 6 September 1972, which makes Idris Elba 53 years and 11 months old today. The Hackney-born actor of Luther.
Nick Jonas — born 16 September 1992, which makes Nick Jonas 33 years and 10 months old today. The singer of the Jonas Brothers.
Michael Buble — born 9 September 1975, which makes Michael Buble 50 years and 11 months old today. The Canadian singer of standards and originals.
Colin Firth — born 10 September 1960, which makes Colin Firth 65 years and 11 months old today. The actor of The King's Speech.
Pink — born 8 September 1979, which makes Pink 46 years and 11 months old today. The singer and aerial performer of Missundaztood.

If any of those figures look older or younger than you expected, that is usually the year-subtraction habit at work. Ages in years and months change every single day of the month, not once a year, and the gap between "turned a new age" and "about to" is where most mental arithmetic goes wrong.

Historical figures born in September

September also gave us people whose work is still in use centuries later. What makes them worth studying is not just what they did, but how old they were when they did it — the numbers are often much lower, or much higher, than the reputation suggests:

Leo Tolstoy — born 9 September 1828. Completed War and Peace at 41.
Michael Faraday — born 22 September 1791. Discovered electromagnetic induction at 40.
Agatha Christie — born 15 September 1890. Published her first Poirot novel at 30.
Jesse Owens — born 12 September 1913. Won four Olympic golds in Berlin at 22.
H. G. Wells — born 21 September 1866. Published The Time Machine at 28.

Reading a list like that changes how a birthday feels. Some of these figures had finished their defining work before the age most people finish training; others did not start until their sixties. If you want to see where your own age sits against achievements like these, the what were famous people doing at my age tool lines your exact age up against dozens of historical milestones and shows you who was doing what at precisely the age you are now.

Calculate your age if you were born in September

If your own birthday falls in September, working out your exact age takes three steps rather than one. First, count the whole years from your birth date up to the most recent September anniversary. Second, count the whole months from that anniversary to the most recent monthly anniversary of your birth day. Third, count the leftover days. That sequence is the reason people born in September can be told two different ages in the same week by two different calculators — one of them stopped at step one.

Leap years complicate it further. Dividing your total days by 365 to get years drifts by about a day a year, and over several decades that error grows into weeks. The safe method counts calendar years first and converts only the remainder. The exact age calculator does all of this for you and then keeps going, showing your age live in years, months, days, hours, minutes and seconds so you can watch the remainder move rather than trusting a rounded figure.

Birthday countdown for September birthdays

Once you know your exact age, the natural next question is how long until the next birthday. For a September birthday, that gap swings wildly depending on when you check — days away in late September, nearly a full year away just after it has passed.

The birthday countdown tool takes your birth date and counts down to your next September birthday to the second, handling leap years and month lengths without you having to think about either. It is the same calendar walk as the age calculation, run in the opposite direction: instead of measuring how far you have come, it measures how far there is to go.

Milestones for September birthdays

Birthdays are only one way to mark time, and arguably the least precise. People born in September also pass a set of milestones that no calendar reminds them about: their 10,000th day alive, their 1 billion seconds, their 500th month, their 20,000th day if they are lucky enough to reach it.

The 10,000th day arrives at roughly 27 years and 4 months — early enough that most people miss it entirely. One billion seconds lands at about 31 years, 8 months and 12 days, which is a genuinely strange thing to know about yourself. The milestones page lists every one of these for your birth date, with the dates already passed and the ones still ahead, and the 1 billion seconds calculator pins down that particular date to the exact second for anyone born in September.

Interesting facts about people born in September

September means seventh month, a leftover from the Roman calendar that started in March.
September is consistently among the top birth months in the United States, with mid-September dates often topping the list.
Sapphire is September's birthstone, and the month spans Virgo and Libra.
The autumn equinox falls in September, so September birthdays sit on the balance point of the year.
September-born children are the oldest in their school year in England, and are statistically over-represented in professional football academies.

Taken together, those quirks are a reminder that a birth month is not just a slot on a calendar. It carries naming history, astronomy, statistics about who you share the date with, and in some countries a measurable effect on schooling. Whichever September date is yours, the exact figures are only a few seconds away.

Calculate your exact age — Live years, months, days, hours, minutes and seconds from your birth date.

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