Calculator
Age Calculator
Find chronological age in years, months, and days for any birth date and reference date. Useful for forms, exam cut-offs, and eligibility checks. Privacy-first: everything runs in your browser.
Calculate exact age
Enter a date of birth and an optional reference date. Results update instantly in your browser — nothing is uploaded.
Required. Use the calendar picker or type YYYY-MM-DD.
Exact age
Choose a birth date to see results.
Useful for
Related calculators
Privacy & limitations
Files are processed in your browser and are not uploaded to our servers.
Your files stay on your device. We do not store or access your documents.
Guides, tips & FAQ
What is chronological age?
Chronological age is the calendar time elapsed since birth, usually reported in completed years plus remaining months and days. Forms, exams, and eligibility rules often need this exact breakdown—not just the year difference.
How we calculate age
Age = (years, months, days) between birth date and reference date
We subtract calendar components, borrowing months/days when needed (same approach used for civil age). Total days is the whole-day difference between the two local calendar dates. Feb 29 birthdays in non-leap years use Feb 28 for “next birthday”.
Worked example
- Birth date: 15 August 1990. Reference date: 24 September 2026.
- Completed years: 36 (birthday already passed in 2026).
- Remaining span from 15 Aug 2026 to 24 Sep 2026 is 1 month and 9 days.
- Result: 36 years, 1 month, 9 days.
Common uses
- School, exam, or sports age cut-offs as of a fixed date
- Passport, visa, and KYC forms that ask age in Y/M/D
- Insurance or benefit eligibility windows
- Personal milestones and anniversary planning
Method & limitations
- Uses your device’s local calendar dates (not UTC midnight), so the day you pick matches what you see.
- Does not apply legal “age as of midnight in jurisdiction X” rules—check the form’s instructions when eligibility is strict.
- Leap years affect total days and month lengths; see the glossary for leap-year basics, or use the date calculator for day counts between any two dates.
- Not medical, legal, or government advice—results are for convenience and planning.
Frequently asked questions
Frequently Asked Questions
Umar kaise nikale date of birth se
Umar kaise nikale date of birth se?
Date of birth daalo aur reference date choose karo, jaise aaj ya exam date. Result completed years, months, aur days mein aata hai.
Exam date par age chahiye to?
Reference date mein woh exam date daalo, aaj ki date nahi. Tool us din tak ki completed age dikhata hai.
Kya yeh eligibility decide karta hai?
Nahi. Yeh calendar age hai. Form agar koi legal cutoff likhe, woh instruction follow karo. Yeh legal advice nahi hai.
Leap day birth date?
29 February daal sakte ho. Age us device ke local calendar se nikalta hai, UTC midnight se nahi.