01
Exact age for a form
Born 15 June 1990 → checked 27 September 2026
Result
36y 3m 12d 13,253 days in total
Age Calculator
CalculatorsCalculate your exact age in years, months and days from your date of birth — free age calculator.
About
About the Age Calculator
Find the exact age between two dates in years, months and days, plus a countdown to the next birthday.
Parents use it to check a child's exact age in years, months and days for medical forms or milestones, while HR and legal professionals use it to confirm whether someone meets an age requirement as of a specific date. It's one of many free calculators on Toolapt, and like every tool here, it's free to use with no sign-up and no limit on how many times you run it.
Examples
Age Calculator examples
3 worked examples
02
A leap-year birthday
Born 29 February 2000 → checked 28 February 2026 (not a leap year)
Result
25y 11m 30d Feb 29 rolls to Feb 28
03
Countdown to next birthday
Born 15 June → checked 27 September 2026
Result
261 days until 15 June 2027
Related tools
FAQ
Frequently asked questions
Quick answers to common questions about the Age Calculator.
What does the Age Calculator do?
It calculates the exact difference between two dates in years, months and days, plus useful totals (months, weeks, days, hours) and a countdown to the next birthday.
Is the Age Calculator free to use?
Yes. It's free, with no sign-up, no watermark and no limit on how many times you use it.
Is my input safe when I use this tool?
Yes. Both dates you pick are processed entirely on your own device — nothing is sent to a server.
Does the Age Calculator account for leap years?
Yes. A birthday on February 29 is treated as February 28 in years that aren't leap years, so the age and next-birthday countdown stay accurate every year.
Can I calculate someone's age on a date other than today?
Yes. Change the "Age on this date" field to any date — past or future — and the calculator measures the age as of that date instead of today.
What does "Until next birthday" mean?
It's the number of days from the date you're measuring on to the next occurrence of the birth date, so you can see exactly how soon (or how recently) a birthday landed.
Can I use the Age Calculator on my phone?
Yes. The page is fully responsive and works on mobile, tablet and desktop browsers alike.
Does the Age Calculator have any limitations?
It's built for everyday date calculations. Extremely unusual calendar edge cases aside, results are accurate and instant for any date range.