Age Calculator

What this tool does

Age Calculator Pro works out your exact age in years, months, days, hours, minutes and seconds, with a live counter that ticks every second. It also includes a next-birthday countdown, a calculator for the gap between any two dates, your Western and Chinese zodiac signs, birthstone, Islamic (Hijri) birth date and life statistics, plus retirement, school-admission and marriage-age checks for Pakistan.

Who it's for

• Anyone filling in a form, job application, CSS/PPSC/FPSC or university admission that asks for exact age on a cut-off date
• Parents checking whether a child can join Playgroup, Nursery, Prep or Class 1 by the school's cut-off date (for example, 5 years old by 31 March)
• Government and private employees planning for retirement at 60 (or any age you choose)
• People who want a fun, shareable birthday poster for WhatsApp, Instagram or Facebook

How to use it

1. Enter your date of birth. Your name is optional and only appears on the poster.
2. Optional: open Birth time & zone and add the time and time zone you were born in, so the hours, minutes and seconds are exact.
3. Switch between the tabs (Exact Age, Birthday, Date Difference, Zodiac & Hijri, Life Stats, Retirement, School Age, Marriage Age) to see each calculator.
4. Tap Share poster to download a 1080×1350 PNG, or share it straight from your phone, or tap Copy summary to copy a text version.

How the maths works

• Leap years and month lengths: a month is counted as complete on the same date of the next month. If that date doesn't exist, the month's last day is used, so 31 January plus one month is 28 or 29 February.
• Born on 29 February: in non-leap years you can choose whether your birthday is 28 February or 1 March.
• Working days: the Date Difference tab can skip Saturday and Sunday, Sunday only or Friday only. Public holidays are not removed.
• Chinese zodiac: your sign is based on the actual Chinese New Year date for every year from 1900 to 2100, not just the calendar year. For example, someone born on 20 January 2023 is a Tiger, not a Rabbit.
• Hijri date: uses the Umm al-Qura calendar built into your browser. Dates in Pakistan follow local moon sighting and can be 1 or 2 days different.
• Heartbeats, breaths and similar life stats are estimates based on averages and are labelled approx.

Note: retirement, school-admission and marriage-age rules are general information only. Always check your own service rules, your child's school, or the current law.

Privacy: everything is calculated in your browser. Your date of birth is remembered only on your own device, and you can clear it with one tap.