Age Calculator
Exact age for any cut-off date — with birthday countdown, born-on weekday, zodiac, life milestones & totals down to seconds.
💡 Set "as of" to an exam form's cut-off date to check age-eligibility exactly the way boards compute it — completed years, months, and days.
You were born on a
Monday
Zodiac sign
♌ Leo
Your exact age
20 years 11 months 2 days
In months
251
In weeks
1,091
In days
7,641
In hours
183,384
In seconds
660,182,400
🎂 Next birthday
29
days to go
You turn 21 on Saturday, 15 August 2026
That's a Saturday — a weekend birthday! 🎉
92% of the way to 21
🏁 Life milestones
The round numbers nobody remembers to celebrate.
5,000 days old
24 Apr 2019
passed
10,000 days old
31 Dec 2032
coming up ✨
15,000 days old
9 Sept 2046
coming up ✨
20,000 days old
18 May 2060
coming up ✨
1 billion seconds old
23 Apr 2037
coming up ✨
💡 Ages are computed in completed calendar units — the method official forms use. Someone born 29 Feb celebrates on 28 Feb or 1 Mar in non-leap years; the counters here use exact day arithmetic either way.
🎂Your age, every way it can be counted
Exact age in years, months, and days— the way official forms want it — plus the fun conversions: total months, weeks, days, hours, and seconds. Set the "as of" date to an exam cut-off to check eligibility precisely. Then the extras nobody else bundles: the weekday you were born, your zodiac sign, a birthday countdown with a progress bar, and life milestones like your 10,000th day and your billionth second.
📊Everything you'd want to know
- Exact age in completed years/months/days — the method eligibility rules use.
- Custom 'as of' date for exam and job-form cut-offs (e.g. 'age as on 01-01-2026').
- Six total-unit conversions, from months down to seconds.
- Birthday countdown: days remaining, the weekday it falls on, and a year-progress bar.
- Born-on weekday, zodiac sign, and five life milestones with their exact dates.
- A copyable age card for forms and fun.
🧮How age is computed
Calendar arithmetic borrows exactly like school subtraction: if the day-of-month hasn't arrived yet, one month is borrowed and converted to that month's real length — which is why the same "months and days" can differ by a day across month boundaries, and why official forms specify "as on" dates.
💡Where exact age matters
- Exam eligibility (NEET, JEE, UPSC, SSC) is checked against a cut-off date, not the application day — always compute 'as on' that date.
- School admission ages are usually 'as on 31 March' or '1 June' — one day can shift a class.
- Completed years is the legal standard: you're 17 until the day you turn 18, even at 17 years 364 days.
- For the gap between any two dates that aren't a birth date, use our Date Calculator.
💡 Frequently Asked Questions
How do I calculate my exact age?+
Subtract calendar-style: completed years first, then completed months, then leftover days. Born 15 Aug 2005, on 16 Jul 2026 you are 20 years, 11 months, 1 day. This calculator does the borrowing arithmetic exactly and shows every total-unit version too.
How do I check my age for an exam cut-off date?+
Set the 'as of' field to the cut-off printed in the notification (e.g. 01-01-2026) instead of leaving it as today. Eligibility rules compare completed years on that exact date — the same method this calculator uses.
How many days old am I?+
Exact day count from your date of birth: a 20-year-old is roughly 7,300 days old. The calculator shows days, weeks, months, hours, and seconds — and flags round-number milestones like 10,000 days.
What day of the week was I born?+
Enter your date of birth and the calculator names the weekday instantly — along with the weekday of your next birthday, so you know whether it lands on a weekend.
How does age work for someone born on 29 February?+
Legally most places count 1 March as the birthday in non-leap years (some use 28 Feb). The exact-day counters here are unaffected — they count real elapsed days regardless of calendar quirks.