Your Date of Birth Start Here
Enter your date of birth above to see your exact age.
Enter your date of birth above to see your birthday countdown.
Enter your date of birth above and a target date to see your age on that day.
Enter your date of birth above and a second person's date of birth to see the age gap.
Enter your date of birth above to find your generation.
Enter your date of birth above to see your age on every planet.
Enter your date of birth above to convert it to the Hijri calendar.
Enter your date of birth above to see your cosmic birth profile.
Enter your date of birth above to find your Chinese zodiac animal.
Related Age Tools
What Can My Date of Birth Tell Me?
One date of birth gives you nine answers: your exact age, a countdown to your next birthday, your age on any date, the age gap with someone else, your generation, your age on other planets, your Hijri age, your zodiac sign with birthstone and birth flower, and your Chinese zodiac animal. Enter it once above and switch tabs.
How to Use the Birthday Calculator
- Enter your date of birth once at the top.
- Switch between the nine tabs. Each uses the same date, so you never retype it.
- For more detail on any result, follow the link under that tab to the full calculator.
Worked Example: Born 15 June 1990
Checked on 25 September 2026:
| Tab | Result |
|---|---|
| Exact age | 36 years, 3 months, 10 days (13,251 days) |
| Next birthday | 15 June 2027, 263 days away |
| Generation | Millennial (born 1981–1996) |
| Age on Mars | 19.29 Mars years |
| Hijri age | 37 Hijri years (born 22 Dhul Qa'dah 1410 AH) |
| Zodiac, birthstone, flower | Gemini, pearl, rose |
| Chinese zodiac | Horse |
Which Tool to Use
- Just your age? The main age calculator, or how many days old you are.
- Planning a birthday? The live birthday countdown.
- Religious dates? The full Hijri age calculator shows the method and a Hijri-to-Gregorian converter.
- Curious about traditions? The birthstone and birth flower profile adds your ruling planet and life path number.
- Everything at once? Stay on this page.
How Accurate Are the Results?
Exact age, countdown, age on a date and age gap use real calendar arithmetic, so leap years and month lengths are handled exactly. Generation uses the Pew Research Center's birth-year ranges. Planet ages divide your age by each planet's orbital period. The Hijri date uses the tabular Islamic calendar and can differ by a day from moon-sighting calendars such as Pakistan's official one. Zodiac, birthstone and numerology are cultural traditions, shown for fun.
This is an all-in-one calculator for one person, not a bulk tool for a list of people. To compare two birthdays, use the Age Gap tab or the age gap calculator.
How the All-in-One Age Calculator Works
From a single date of birth, the page runs several calculations at once: your exact age in years, months and days; the countdown to your next birthday; your generation; your age in Hijri years; your age on Mars; and your zodiac sign and birthstone, which come from the day and month you were born.
Who Uses the All-in-One Age Calculator?
- Birthday cards and posts: fun facts for a birthday message.
- Curious users: everything about a date of birth on one page.
- Parents: record milestones for a child in one place.
How the All-in-One Age Calculator Saves You Time
Instead of opening six separate tools, you enter the date once and get every result together.
Frequently Asked Questions
What is a birthday calculator?
Do I need to enter my date of birth for each tab?
How many days until my next birthday?
Is the Hijri age on this page the same as on the Hijri calculator?
Which generation am I if I was born in 1996 or 1997?
Is my date of birth stored anywhere?
Last updated: September 2026