Age Calculator
Calculate exact age in years, months and days from a birth date, plus the total in weeks, hours, minutes and seconds.
Calculated locally in your browser using your device's date and time.
- Breaks the age down to years, months and days — not just a rounded year count.
- Also shows the total elapsed time in months, weeks, days, hours, minutes and seconds — not just the calendar breakdown.
- Works for any "as of" date, so you can find someone's age on a future or past date.
- Uses your device's clock and runs in your browser — the birth date isn't uploaded.
Why this is private
- Calculated locally in your browser using your device's date and time.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Calculates exact age in years, months and days between a birth date and today (or any target date), plus the total elapsed count in months, weeks, days, hours, minutes and seconds.
How to use it
- 1Enter a birth date.
- 2Optionally change the "as of" date from today.
- 3View the exact age breakdown across all seven units.
Frequently asked questions
What people use it for
Fill in an exact age on a formGet years, months and days for a visa, insurance or medical form.
Check eligibility by a cut-off dateSet the "as of" date to a scheme's deadline to see if an age requirement is met.
Work out a child's age for school admissionMany admissions use age as of a specific date, not today.
Find an age for a past eventSet the target date to a wedding or record date to see how old someone was then.
Related tools
All date & time toolsDate Difference CalculatorCalculate the number of days, weeks or months between two dates — or just business days.Add / Subtract Date CalculatorAdd or subtract days, weeks, months or years from a date — with an optional business-days mode.Day of the Week FinderFind what day of the week any date falls on.Timezone ConverterConvert a time between two or more timezones at once.
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Age Calculator