Age Calculator
The Age Calculator computes the difference between a birth date and any chosen date, in years, months, and days, plus the total number of days. The calendar math is timezone-safe.
How to use
- 1Select your date of birth.
- 2Select the as-of date (defaults to today).
- 3See your age in years, months, days, and total days.
Why FREE PDF?
- Completely free
- No account required
- Processing happens in your browser whenever possible
- Your files stay yours
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Frequently Asked Questions
In which units is my age shown?
Your exact age from your birth date is shown in years, months, and days — plus the total number of days you've lived.
Is the calculation affected by timezone, causing an off-by-one-day error?
No, the calculation works purely on calendar dates — there's no timezone-related off-by-one-day shift.
Can I calculate my age as of a specific date (not today)?
Yes, change the "as of" date field to calculate your age on a past or future date.
Is my birth date sent to a server?
No, the calculation happens entirely in your browser — the birth date you enter is never saved anywhere.