School admission
Check a child's age on the cut-off date set by the school or board.
Age Calculator
Type a date of birth and get the exact age, plus a countdown to the next birthday.
Your files stay with you. Your files never leave your browser. This tool runs on your device: nothing is uploaded to our servers, so there is nothing for us to store or see.
How to use it
- Choose the date of birth.
- Leave 'Age on' as today, or pick another date to see the age then.
- Read the age, totals and next birthday.
Where it helps
Job and exam forms
Confirm you're within the age limit on the date the notice gives.
Birthdays
See which weekday you were born on and how many days are left.
Good to know
Stays in your browser
Numbers you type are worked out on your device and never sent to our servers.
Leap-day birthdays
In non-leap years, 29 February counts from 1 March.
Use the official date
Forms often fix the age on a set date, not today.
Questions people ask
How do you calculate your exact age in years, months and days?
Choose the date of birth and leave 'Age on' as today, or pick another date. The tool counts full years, then full months, then the leftover days using each month's real length. It also shows the age in months, weeks, days and hours, the weekday you were born on and a countdown to the next birthday.
- Y M D Exact age. Years, months, days.
- Any date Age on. Past or future.
- Countdown Next birthday. Days to go.
- 0 Data sent. In your browser.
How does the calculator work out my age?
It counts the full years since your birth date, then the full months after that, then the days left over, using the true length of each month. For example, 15 May 1990 to 10 March 2025 comes out as 34 years, 9 months and 23 days. That's the same way most official forms count age.
What if I was born on 29 February?
In years without a 29 February, the tool counts your birthday on 1 March, so the countdown never points at a date that doesn't exist. Your age in completed years still goes up on that day. Leap years fall every four years, with a few century exceptions such as 1900.
Can I find my age on a past or future date?
Yes. Change the 'Age on' date from today to any other day, such as a school admission cut-off, an exam date or the last date of a job application. The result shows your exact age on that day, which is what most age-limit rules actually check.
How do I check age for school admission?
Find the cut-off date in the school or board notice, often 31 March or 1 June, and set 'Age on' to that date. Then enter the child's date of birth. If the result is just under the minimum age, check whether the school allows any relaxation before applying.
Can I use it for government job age limits?
Yes. Recruitment notices fix the age on a set date, usually the closing date or 1 January or 1 August of the year. Set 'Age on' to that date and compare the result with the upper and lower limits. Remember to add any relaxation your category is allowed.
What does 'Born on a' show?
It tells you the weekday of your birth date, such as 'Born on a Tuesday'. Many people like knowing it, and it helps when a horoscope, a naming ceremony record or an old certificate mentions the day. It's worked out from the calendar, so it's correct for any year.
Why are months, weeks, days and hours shown?
Some forms, studies and baby milestones count age in months or weeks rather than years. The totals show your whole age in each unit, for example a baby of 1 year 2 months is also 14 months old. Hours are approximate and assume midnight on both dates.
How is the next birthday countdown worked out?
The tool finds your next birthday after the 'Age on' date, tells you which weekday it falls on and the age you'll turn, and counts the days until then. If the date you chose is your birthday, it simply says so and wishes you a happy birthday.
Why does the tool say the date of birth is after the other date?
The birth date must come before the date you're measuring to. If you set 'Age on' to a day before the birth date, there is no age to show, so the tool asks you to check both dates. This usually happens when the year was typed wrongly.
Is my date of birth stored anywhere?
No. The calculation runs in your browser and your date of birth never reaches our servers. Nothing is saved after you close the page and there's no sign-up. You can safely work out ages for family members or staff without sharing their details. Close the tab and every date you typed is gone.
Can I calculate the age of an employee or customer?
Yes, for any date of birth. HR teams use it to check minimum working age or retirement dates, and clinics use it for patient records. For many people at once a spreadsheet is quicker, but for one-off checks this is faster and keeps the data private.
How do I work out when someone turns 18 or 60?
Add the years to the birth date with the add or subtract days tool, which gives the exact day. For example, someone born on 12 August 2008 turns 18 on 12 August 2026. Then use this calculator with 'Age on' set to check any date in between.
Does it count the birth date and today as full days?
It counts the days between the two dates, the same way an age is normally given, so a baby born yesterday is one day old today. If you need both end dates included, as some leave rules do, use the date difference calculator with the end-date box ticked.
Does it work on a phone?
Yes. The date pickers open your phone's own calendar, and the result appears as soon as both dates are set. It works in any modern mobile browser, loads quickly and doesn't need an app, so you can check an age while filling in a form on your phone.
Is the age calculator free?
Yes. It's free with no sign-up and no limit on how many ages you check. It's part of the free converters and calculators from Marketiism. If you run a clinic or school, Marketiism can also handle bookings and WhatsApp reminders, but this tool needs no account.
Want this inside your own account?
Marketiism keeps your invoice numbers, GST reports, UPI payment links and WhatsApp reminders in one place. Leave your details and we'll call to set it up for your business, or start the trial yourself.
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