Age Calculator
Calculate exact age in years, months, and days between a birth date and today or any chosen date.
Calculate exact age in years, months, and days between a birth date and today or any chosen date.
The age calculator finds the precise difference between your date of birth and a target date — today by default, or any date you choose. It returns your age in completed years, months, and days, accounting for the varying lengths of months and for leap years. This is more accurate than simply subtracting years, which ignores whether your birthday has occurred yet this year. The breakdown is useful for forms, eligibility checks, milestones, and curiosity.
Yes. The calculation uses actual calendar dates, so it correctly handles leap years and the differing number of days in each month. This means the day count reflects the real calendar rather than an approximation based on 365-day years, giving an exact age even across February 29th and long stretches of time.
Yes. You are not limited to today's date — you can set any two dates to find the exact span between them. This makes the tool useful for working out someone's age at a past event, the duration between two historical milestones, or how old a child was on a particular day. Simply enter the earlier date as the birth or start date and the later date as the target.
Because a single year contains 365 or 366 days, ages expressed in total days grow quickly — even a young child is already thousands of days old. The figure is correct; it just looks large compared with the familiar count in years. Seeing your age in days, weeks, or months can be a striking way to appreciate the passage of time.