Frequently Asked Questions
Everything you need to know about chronological age calculation, leap years, and date arithmetic.
How does this calculator handle month lengths varying between 28 and 31 days?
Our engine tracks the exact days of each preceding month in the calendar timeline, ensuring that day counts never drift or skew across irregular months.
Why do some calculators show different results?
Many basic calculators divide total days by 365.25 or 30.4375, leading to fractional roundoff errors. Our engine steps through full calendar milestones, providing integer-exact years, months, and days.
Is my date of birth kept private?
Yes. All calculation math runs strictly inside your local web browser session using JavaScript. No birth dates are sent over the network or saved in databases.