Calculate exact age in years, months, and days. Find date differences, countdowns, zodiac signs, and detailed time breakdowns
How many days between two dates? How old is someone born on a specific date? This calculator answers both. Enter dates to find the difference in years, months, days, weeks, or business days. It also calculates a person's exact age down to the day.
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You need an exact age in years, months, and days from a birth date for a form, plus the total days lived.
Dates
born 1990-06-15 → on 2026-05-15
Result
35 years, 11 months, 0 days · ≈ 13,118 days · next birthday in 31 days
Calendar differencing has to respect varying month lengths and leap years, which is why "subtract the years" gives the wrong answer near a birthday. The tool computes the precise breakdown and the countdown to the next anniversary.
How many days between two dates? How old is someone born on a specific date? This calculator answers both. Enter dates to find the difference in years, months, days, weeks, or business days. It also calculates a person's exact age down to the day.
Count business days between milestones to build realistic timelines.
Calculate someone's exact age for eligibility checks, forms, or celebrations.
Determine the precise number of days or months in a contract period.
Yes. February 29 is handled correctly for all leap years.
Monday through Friday. Public holidays are not excluded, only weekends.
Enter today's date and use the tool to add a specific number of days to find the target date.
Every calculation runs locally in your browser. Your numbers and expressions are not transmitted or stored.