Home › Calculators › Age Calculator
Your age
Select your date of birth to begin.
Your age in other units
—
total months
—
total weeks
—
total days
—
total hours
Planning for retirement?
Your age drives your retirement horizon. Estimate your EPF and NPS corpus, or project long-term SIP growth.
EPF Calculator → NPS CalculatorWhat is an age calculator?
An age calculator works out how old you are from your date of birth. Rather than a rough "current year minus birth year", it counts complete years, months and days up to a chosen date (today by default), so the answer is exact — useful for forms, eligibility checks, school admissions, retirement planning and simply satisfying curiosity.
How to calculate age from date of birth
Pick your date of birth. Leave the second date as today, or set it to any date to find your age on that day. The calculator subtracts the two dates calendar-by-calendar — counting full years, then the months since your last birthday, then the remaining days — and also shows your age expressed purely in total months, weeks, days and hours.
Why exact age matters
A precise age — down to the day — is needed far more often than people expect. Government and legal forms, passport and PAN applications, school and college admissions, competitive-exam eligibility, and job-application cut-offs all work from your exact date of birth, not a rounded year. Financial milestones are age-driven too: you become eligible to vote at 18, can open certain accounts in your own name, and unlock senior-citizen tax benefits at 60 and super-senior benefits at 80. Counting complete calendar years, months and days avoids the off-by-one errors that "current year minus birth year" so often produces.
How the calculation handles the calendar
Real calendars are irregular — months have 28 to 31 days and leap years add a 29th of February every four years. This tool counts actual elapsed calendar dates rather than assuming a fixed 30-day month or 365-day year, so the day count stays accurate across leap years and month boundaries. That's also why your age in "total days" keeps changing every single day, while your age in completed years only ticks over on your birthday.
Age and income-tax slabs
Your age on the last day of the financial year decides which basic exemption limit applies under the old tax regime: below 60, you're a regular taxpayer; at 60–79 you're a senior citizen with a higher exemption; and at 80+ you're a super-senior citizen with a higher exemption still. (The new regime uses a single exemption limit regardless of age.) Seniors also get relaxed TDS thresholds on bank interest. Use the exact age from this tool with the slab guide and the ITR calculator to see which category and regime work best for you.
Frequently asked questions
Does it handle leap years?
Yes. February 29 and varying month lengths are handled by counting real calendar dates, so the day count is accurate.
Can I find my age on a past or future date?
Yes. Change the second date ("calculate age at") to any date — past or future — to see your age on that day.
Is my date of birth stored?
No. Everything is computed in your browser — nothing is sent to or stored on any server.
How does my age affect income tax?
Under the old regime, your age on the last day of the financial year sets your basic exemption: regular below 60, senior citizen at 60–79, and super-senior at 80+, each with a higher exemption. The new regime uses a single exemption regardless of age. Seniors also get relaxed TDS thresholds on interest.