Age Calculator
The age calculator works out your exact age in years, months and days from your date of birth, and also shows your age in total days, months and weeks.
Last updated 2026-08-14
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<iframe src="https://calculopedia.darzh.xyz/embed/age-calculator/" width="100%" height="700" style="border:0;border-radius:12px" loading="lazy"></iframe>
quizExample
How this calculator works, with real numbers (no JavaScript needed):
Inputs
- Date of birth
- 1995-06-15
- Calculate age as of
Results
- Your age
- 31 years, 2 months, 0 days
- Years
- 31
- Months
- 2
- Days
- 0
- Total days alive
- 11,384
- Total months
- 374
- Total weeks
- 1,626
- Next birthday
- 15 June 2027
- Days until your birthday
- 304
functionsThe formula
An age calculator tells you exactly how old you are — years, months and days — by subtracting your date of birth from today's date.
How the calculation works
It's not simple day-count subtraction: an age is measured in calendar units. For someone born on 15 June 1995 on 14 August 2026:
- Years: 2026 − 1995 = 31
- Then months: August − June = 2 months
- Then days: 14 − 15 = −1 → borrow a month: 31 years, 1 month, and the day count wraps to the end of July → 31 years, 1 month, 30 days
The calculator handles leap years and month-lengths automatically (a birthday on 29 February is handled by rolling to 28 February in non-leap years).
What else it shows
- Total days alive — the raw number of days since birth, handy for comparing with life milestones
- Total months and weeks
- Next birthday and days until it — always the next occurrence of your birth date, rolling over to the following year if today is your birthday month
Uses
Beyond casual "how old am I", age calculators are used for:
- Retirement planning (Indian EPF and NPS touchpoints are age-based)
- KYC and insurance (age affects premiums)
- School/college eligibility
- Medical checks where reference ranges depend on age
helpFrequently asked questions
question_markHow do I calculate my age?
Subtract your date of birth from today's date in years, months and days. Enter your date of birth in this calculator and it does the calendar math instantly.
question_markHow do I calculate age from date of birth?
Start from the birth year and count forward, then months, then days, borrowing across months where needed (e.g., from 15 June 1995 to 14 Aug 2026 is 31 years, 1 month, 30 days).
question_markHow many days old am I?
The calculator shows your total days alive — the exact number of days from your birth date to today.
question_markHow is my next birthday calculated?
The calculator finds the next occurrence of your birth month and day after today, adding a year if your birthday already passed this year. If you were born on 29 Feb, it uses 28 Feb in non-leap years.