Age Calculator & Live Age Counter
Enter your date of birth and this age calculator instantly works out your exact age — years, months, weeks, days, hours, minutes and seconds — then keeps counting it live. Add your birth time for extra precision and play a full-screen countdown to your next birthday. Everything runs in your browser — nothing is uploaded, no sign up.
Calculate your age
Enter your date of birth to calculate your exact age — then watch the live age counter tick.
Years old
Enter your date of birth to begin
Your next birthday · turning — in —
🔒 Your birth date stays on your device — nothing is uploaded.
How to calculate your age
Calculating your age with this online age calculator takes just a few seconds — no maths and no sign up. Enter your date of birth, add your birth time if you know it, and read your exact age straight off the live counter.
Enter your birth date
Pick the day, month and year you were born. That is all the age counter needs to start.
Add the time (optional)
Know the hour and minute you were born? Add them for a precise, to-the-second age. It is not required.
See your live age
Your exact age appears instantly in a big number, then keeps ticking — years, months, days, hours, minutes and seconds.
Play the countdown
Hit play to watch a full-screen countdown to your next birthday — great for parties, streams and reveals.
What is an age calculator?
An age calculator is a free online tool that works out exactly how old you are from your date of birth. Instead of counting on your fingers, you enter the day, month and year you were born and it instantly returns your chronological age — the number of complete years you have lived — along with the leftover months and days.
This particular age calculator goes one step further and doubles as a live age counter: once your age is calculated it keeps ticking in real time, so you can literally watch the seconds of your life add up.
Age calculator vs. age counter
The two terms are often used for the same thing, with a subtle difference. An age calculator answers the question “how old am I right now?” at a single moment. A live age counter answers it continuously, updating every second.
You get both here. Use it as a quick age calculator to find your exact age by date of birth, or leave the tab open and let the age counter run — perfect for birthdays, milestones and live streams. And because the calculation happens in your browser, your date of birth stays completely private.
Calculate your age in years, months, weeks and days
Need your age in a specific unit? This age calculator breaks your age down every way at once, so you can read off whichever one you need.
Age in years
Your chronological age — the whole number of years since you were born. This is the age most forms and people ask for.
Age in months
How many months old you are. Perfect for tracking a baby or toddler’s age precisely.
Age in weeks
The total number of weeks you have been alive — a fun, unusual way to measure your age.
Age in days
Your exact age in days since your date of birth, updated live.
Age in hours
The full number of hours you have lived so far.
Age in minutes & seconds
Down-to-the-second precision when you add your time of birth.
Why use this age calculator
Live & real-time
Your age updates every single second, right in your browser — a true live age counter, not a static number.
100% private
Your birth date never leaves your device. Nothing is uploaded, saved on a server or shared with anyone.
Birthday countdown
See exactly how long until you turn the next age — down to the day, hour, minute and second.
Exact breakdown
Years, months, days, hours and minutes — the full breakdown, not just a rounded number of years.
Full-screen mode
Play a big, full-screen countdown to your next birthday — perfect to project or record.
Free, no sign up
No account, no install, no limits. Open the page and start counting instantly.
Age counter — frequently asked questions
How do I calculate my age with this age calculator?
Enter your date of birth, and optionally your time of birth, and the age calculator instantly works out your exact age. It compares your birth date with the current date and time and shows the full breakdown — years, months, weeks, days, hours, minutes and seconds — with no button to press.
What is the difference between an age calculator and an age counter?
An age calculator gives you your age at a single moment, while a live age counter keeps that number updating in real time so you can watch the seconds tick by. This tool does both: it calculates your exact age from your date of birth and then counts it live.
How is my age calculated?
The age calculator compares your birth date and time with the exact current date and time on your device. It works out the full breakdown — years, months, days, hours, minutes and seconds — using calendar-accurate month lengths, and recalculates it every second so the number stays live.
How do I calculate age from a date of birth?
Subtract the birth date from today’s date: the number of full years passed is the age. This age calculator does that for you automatically and also carries over the leftover months, days and hours so you get an exact, not rounded, result.
Can this age calculator show my age in months, weeks or days?
Yes. As well as your age in years, the tool shows your age in months and days, and totals for the weeks, days and hours you have been alive — so you can calculate your age in whichever unit you need.
Do I have to enter the time I was born?
No. The hour and minute are optional. If you leave them empty the age calculator assumes midnight (00:00). Adding your birth time just makes the hours-and-minutes part of your age, and the birthday countdown, more precise.
Is my date of birth sent to a server?
No. Everything runs inside your browser with JavaScript. Your date of birth and time are never uploaded, stored or seen by anyone, so the age calculator is completely private.
What does the next-birthday countdown show?
It shows how much time is left until your next birthday — the age you are about to turn — counted down in days, hours, minutes and seconds. Press "Play full-screen countdown" to watch it big across the whole screen.
Does the age calculator work on mobile?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed. The full-screen countdown works on phones too.
Can I use it to calculate a baby’s age or someone else’s?
Absolutely. Enter any date of birth — a baby, a friend, a partner or a pet — to calculate their exact live age and the countdown to their next birthday.
Is this age calculator really free?
Yes. The age calculator and age counter are 100% free with no sign up, no trial and no limits. Use them as often as you like.
More free online tools
🎂 Counting down to
Turning —
🎉 Happy Birthday! 🎉
You are now — years old
Press Esc or tap ✕ to exit