Calculators
Age Calculator
Exact age + countdown to next birthday
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Age
🎂
Happy birthday! 🎉
Hope your day is filled with joy.
Next birthday
Born on a
Zodiac
Chinese zodiac
Birthstone
Things you've done while being alive
Estimates use averages — 70 bpm heart rate, 16 breaths/min, 8 h sleep/day, 29.5-day lunar cycle.
Next milestone
About this tool
Find out exactly how old you are — down to the year, month, day, hour, minute and second — and see a live countdown to your next birthday. Beyond the basics, this page also tells you the day of the week you were born, your zodiac sign, your Chinese zodiac, your birthstone, and a few fun life-stats: how many heartbeats and breaths you have taken, days you have slept, and orbits you have made around the Sun. Pick your date, share the link with friends, and enjoy a confetti burst if today happens to be your birthday.
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How to use
- 1 Pick your date of birth using the date picker.
- 2 See your exact age in years, months and days.
- 3 Watch the live countdown to your next birthday.
- 4 Read your day of the week, zodiac, Chinese zodiac and birthstone.
- 5 Tap Share to copy a link with your date pre-filled — or use your phone’s native share sheet.
Examples
| Born 12 Aug 1973 | About 52 years 4 months — 19,143 days alive — Leo · Ox · Peridot |
| Born 1 Jan 2000 | Capricorn · Dragon · Garnet — born on a Saturday |
| Born today | 0 days — Happy birthday! 🎉 |
Frequently asked questions
It compares your date of birth to the current date in your browser to compute exact years, months and days. The countdown ticks every second based on your local clock.
Date math is sensitive to time zones and to whether the count includes the start day. We use your browser’s local time and exclude the birth day itself when reporting completed days.
We use the standard tropical zodiac dates (e.g. Leo: 23 Jul – 22 Aug). Some sources publish slightly different cusp dates; if your birthday falls on a cusp, treat it as informational rather than authoritative.
It is approximate — the Lunar New Year falls between late January and mid-February each year, so people born in those weeks can be on the boundary of two animals. We map by Gregorian year for simplicity.
They use rough averages: 70 beats per minute, 16 breaths per minute, 8 hours of sleep per day, and a 29.5-day lunar cycle. Treat the numbers as fun illustrations, not medical or astronomical truth.
Yes — the URL contains your selected date as a ?dob=YYYY-MM-DD parameter. Anyone who opens it will see the calculator pre-filled to that date.
A small open-source library called canvas-confetti, loaded on demand. It only fires when today’s date matches your birth month and day.
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Age Calculator
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