Monday
Fair of face
Free age calculator by date of birth
Birthday & age calculator: how old am I, exactly?
Enter a date of birth to see your exact age, the day you were born, how many days you've been alive and a live countdown to your next birthday.
Milestones worth celebrating
How many days have I been alive?
Enter your date of birth above for the exact count, leap days included. For a quick estimate, multiply your age in years by 365.25: a 25-year-old has been alive for about 9,131 days.
Birthdays come once a year; these milestones come once a lifetime. Most people never notice their 10,000th day or their billionth second, so the calculator shows yours, with the exact date.
| Milestone | Around age |
|---|---|
| 1,000 days | 2 years, 8 months |
| 5,000 days | 13 years, 8 months |
| 1,000 weeks | 19 years, 1 month |
| 10,000 days | 27 years, 4 months |
| 1 billion seconds | 31 years, 8 months |
| 500 months | 41 years, 8 months |
| 20,000 days | 54 years, 9 months |
How it works
How to calculate your age from your date of birth
Age sounds simple until months have different lengths and leap years get involved. Here's exactly how we count, so your answer matches what you'd work out by hand.
- Full years firstEvery birthday you've reached counts as a year.
- Then full monthsEach monthly birthday since then counts as a month. Born on the 31st? In shorter months we use the last day of the month.
- Then the days left overDays since your last monthly birthday.
- 29 February birthdaysIn years without a 29 February, we count your birthday on 28 February.
Example: born on 15 August 2000, you're 25 years, 4 months and 17 days old on 1 January 2026.
Need your age on a specific date?
Exam and job forms often ask for your age "as on" a certain date, like 1 January or 1 August. Open More options, set Calculate age on to Another date and pick that date. You'll get your exact age on that day in years, months and days.
The Monday's child rhyme
What day of the week was I born?
Enter your date of birth above to find out. Here's what the old English nursery rhyme says about each day.
Tuesday
Full of grace
Wednesday
Full of woe
Thursday
Has far to go
Friday
Loving and giving
Saturday
Works hard for a living
Sunday
Bonny and blithe, and good and gay
The "Monday's child" rhyme was first printed in 1838. Sunday was the Sabbath, which is why it gets the longest line.
Age by birth year
How old am I if I was born in…?
Take your birth year away from the current year. That's the age you turn this year; until your birthday comes, you're one year younger.
Age you turn in 2026
- 196561 this year
- 197056 this year
- 197551 this year
- 198046 this year
- 198541 this year
- 199036 this year
- 199531 this year
- 200026 this year
- 200521 this year
- 201016 this year
- 201511 this year
- 20206 this year
Never miss a birthday
Their birthday is coming. Get a surprise link ready.
Count down to a friend's birthday, get a reminder before the day, and send a birthday card with balloons, candles and a letter from you.
Questions
Birthday and age calculator FAQs
Does it show my star sign and birthstone?
Yes. You'll also see your Chinese zodiac animal, birth flower and generation, which day of the year you were born, and the weekday your birthday falls on for the next few years.
Can you remind me before a birthday?
Yes. Add your email and choose when you'd like a reminder, or add the birthday to your Google, Apple or Outlook calendar so it repeats every year. For a countdown page with a theme and a note from you, try our birthday countdown.
Do you save my date of birth?
No. The calculation happens in your browser. If you ask for an email reminder, we keep only your email, the name, the birthday's day and month, and your reminder settings. Shared links carry the name, day and month, and the year only if you choose to show the age.
Free tools
More free love and birthday tools
All free, no sign-up and no app to download.