Compliance & Scheduling Calculator
Age Calculator
Calculate exact age in years, months, and days from a US-format birth date, plus total days and hours lived.
What this calculator does
- Built on official FLSA federal labor standards (29 CFR Part 541).
- 100% free, no signup — calculations run instantly in your browser.
- Results include a plain-English interpretation of what the numbers mean.
Birth Date
Exact Age
Enter the birth date.
0
years old
Exact age—
Total days lived0
Total hours lived0
Disclaimer. All results are for reference only and are not professional legal or payroll advice. Calculations reflect the FLSA rule restored May 15, 2026 (29 CFR Part 541). State rules may impose stricter requirements.
How this calculation works
Exact age is calculated by subtracting the birth date from the comparison date, borrowing across month and year boundaries when the day-of-month is negative. The result expresses years, months, and remaining days.
This calculator also returns total days and hours lived — useful for milestone tracking, insurance age rules, and eligibility windows. Leap years are handled correctly through native date arithmetic.
Frequently Asked Questions
How is exact age calculated?
Subtract the birth date from the current date, borrowing from months and years as needed when days are negative. The result is expressed as years, months, and days.
Does this account for leap years?
Yes. The calculation uses actual calendar dates, so February 29 in leap years is handled correctly in the day count.
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